To see the other types of publications on this topic, follow the link: Mine tailing.
Journal articles on the topic 'Mine tailing'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 journal articles for your research on the topic 'Mine tailing.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.
1
Liu, Yuxi, Zhixiang Liu, Keming Li, Sijia Deng, and Longjun Dong. "A Cleaner Mining Method for Waste Tailings as Paste Materials to Goafs." Geofluids 2020 (October 22, 2020): 1–16. http://dx.doi.org/10.1155/2020/8857290.
Full textAbstract:
Underground mining is the primary method to obtain economically valuable minerals, but it usually brings a large number of goafs (mined-out voids) and large quantities of waste tailings. The gradual accumulation of mine tailings has attracted worldwide attention because of its occupation and acidification of land, and a large number of goafs often lead to stope instability and ground subsidence. To solve the waste tailing accumulation and ground subsidence, a cleaner mining method—cemented tailing backfilling (CTB)—for filling mining goafs by tailings was proposed. Firstly, the volume of the goafs was detected, and the hydraulic-mechanical coupling properties of the original tailings were tested. Then, a reasonable mix proportion of tailings, binder, and water was determined based on laboratory experiments. Finally, the filling pipe network and filling system were designed according to the actual situation of the mine. This paper provides an environmental and economic method for treating tailing accumulation and preventing ground subsidence. At the same time, it was demonstrated in Linglong Gold Mine (LLGM), and a plan which allows 15.8 service years of nondischarge of tailings was designed in LLGM.
2
Huang, Xing Xing, Hong Bing Ji, Cai Li, Fei Qin, Qian Li, and Yong Li Liang. "A Comparative Study on the Pollution and Speciation Characteristics of Heavy Metals between the Gold and Iron Mine Tailings of the Upstream Area of Miyun Reservoir, Beijing." Advanced Materials Research 518-523 (May 2012): 1412–16. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.1412.
Full textAbstract:
In order to have a comparative investigation of the pollution and speciation characteristics of heavy metals between the gold and iron mine tailings of the upstream areas of Miyun Reservoir, the tailing samples from the typical gold and iron mines were analyzed. The total metal concentration is determined by acid digestion and the chemical fractionation of metal by the Tessier sequential extraction method. It is found that compared to background values of Beijing, the heavy metal in both gold and iron mine tailings is higher, while the heavy metal in gold mine tailings is higher than that of iron mine tailings, with Mn as an exception. Mercury is the most serious pollution element in gold mine tailings. Results of the sequential extraction suggest that the exchangeable of Cd exhibits the highest percentage of total metal in gold and iron mine tailings（15% and 6.5% of the total metal, respectively) among Cd, Mn, Zn, Cu, Pb, Cr. In the majority of iron mine tailing samples collected, large amounts of Cu were mainly associated with the organic form. The percentage of the bioavailable metals in both gold and iron mine tailing samples follows the order: Cd>Mn>Zn>Cu>Pb>Cr.
3
Bernardino, Angelo F., Fabiano S. Pais, Louisi S. Oliveira, Fabricio A. Gabriel, Tiago O. Ferreira, Hermano M. Queiroz, and Ana Carolina A. Mazzuco. "Chronic trace metals effects of mine tailings on estuarine assemblages revealed by environmental DNA." PeerJ 7 (November 7, 2019): e8042. http://dx.doi.org/10.7717/peerj.8042.
Full textAbstract:
Mine tailing disasters have occurred worldwide and contemporary release of tailings of large proportions raise concerns of the chronic impacts that trace metals may have on the aquatic biodiversity. Environmental metabarcoding (eDNA) offers an as yet poorly explored opportunity for biological monitoring of impacted aquatic ecosystems from mine tailings and contaminated sediments. eDNA has been increasingly recognized to be an effective method to detect previously unrecognized small-sized Metazoan taxa, but their ecological responses to environmental pollution has not been assessed by metabarcoding. Here, we evaluated chronic effects of trace metal contamination from sediment eDNA of the Rio Doce estuary, 1.7 years after the Samarco mine tailing disaster, which released over 40 million m3 of iron tailings in the Rio Doce river basin. We identified 123 new sequence variants environmental taxonomic units (eOTUs) of benthic taxa and an assemblage composition dominated by Nematoda, Crustacea and Platyhelminthes; typical of other estuarine ecosystems. We detected environmental filtering on the meiofaunal assemblages and multivariate analysis revealed strong influence of Fe contamination, supporting chronic impacts from mine tailing deposition in the estuary. This was in contrast to environmental filtering of meiofaunal assemblages of non-polluted estuaries. Here, we suggest that the eDNA metabarcoding technique provides an opportunity to fill up biodiversity gaps in coastal marine ecology and may become a valid method for long term monitoring studies in mine tailing disasters and estuarine ecosystems with high trace metals content.
4
SETYANINGSIH, LULUK, ARUM SEKAR WULANDARI, and HAMIM HAMIM. "Growth of typha grass (Typha angustifolia) on gold-mine tailings with application of arbuscular mycorrhiza fungi." Biodiversitas Journal of Biological Diversity 19, no. 2 (March 1, 2018): 454–59. http://dx.doi.org/10.13057/biodiv/d190218.
Full textAbstract:
Setyaningsih L, Wulandari AS, Hamim H. 2018. Growth of typha grass (Typha angustifolia) on gold-mine tailings with application of arbuscular mycorrhiza fungi. Biodiversitas 19: 454-459. Gold mine tailings contain extreme physical and chemical properties, which inhibit plant growth due to lower nutrition and higher heavy metal contaminants. Typha (Typha angustifolia) is type of grass growing well on waterlogged area including tailing dam. The objective of this study was to investigate the effect of arbuscular mycorrhizal fungi (AMF) in combination with compost and soil on the typha growth in gold mine tailings. The study was conducted in greenhouse by inoculating two AMF isolates (Glomus etunicatum and G. manihotis) to typha seedlings grown in pure tailing media, mixed tailing-compost media, and mixed tailing-compost-soil media. The compatibility and growth of typha grass were analysed after 1 month. Results showed that G. etunicatum and G. manihotis application significantly increased AMF colonization of typha roots up to 16.6% and 21.8% respectively. The length, number of leaves and biomass of typha also increased up to 90%, 50% and 97% respectively compared to those without AMF inoculation. G. etunicatum contributed the best growth of typha grown in mixed compost-soil-tailings, resulting in double increase of its length and biomass. The application of G. manihotis did not significantly increase the growth of typha in mixed media; however, under pure tailing, this mycorrhiza had the best induction for typha biomass and leaf number. In general, AMF application increased growth of typha grass in tailings media.
5
Manaviparast, Hamid Reza, João Pinheiro, Elmira Khaksar Najafi, Cláudia Abreu, Nuno Araújo, Nuno Cristelo, and Tiago Miranda. "Mechanical Behavior of a Mine Tailing Stabilized with a Sustainable Binder." Applied Sciences 13, no. 7 (March 23, 2023): 4103. http://dx.doi.org/10.3390/app13074103.
Full textAbstract:
Mining is a primary sector for the national economy of many countries, but exploiting these natural resources causes negative impacts on the environment. Tailings produced during mining, called mine tailings, have to be disposed of, and for that purpose, they are often mixed with Portland cement to control environmental toxicity and improve their mechanical properties. However, the high environmental impacts of producing Portland cement are well known. In this sense, sustainable binders based on the alkaline activation of industrial wastes have been studied as an alternative to using Portland cement. This study focused on applying a sustainable binder based on the alkaline activation of fly ash to improve the mechanical performance of a mine tailing from a mine located in Portugal. Geotechnical tests and chemical analysis were conducted to characterize the mine tailing and fly ash used in the alkaline activation process. In addition, triaxial tests were performed to evaluate the mechanical performance of the specimens, with both natural and stabilized tailings. The developed study proved that stabilized tailing with activated fly ash shows promising mechanical performance showing that this approach can be an excellent alternative to using Portland cement.
6
Kock, Dagmar, and Axel Schippers. "Quantitative Microbial Community Analysis of Three Different Sulfidic Mine Tailing Dumps Generating Acid Mine Drainage." Applied and Environmental Microbiology 74, no. 16 (June 27, 2008): 5211–19. http://dx.doi.org/10.1128/aem.00649-08.
Full textAbstract:
ABSTRACT The microbial communities of three different sulfidic and acidic mine waste tailing dumps located in Botswana, Germany, and Sweden were quantitatively analyzed using quantitative real-time PCR (Q-PCR), fluorescence in situ hybridization (FISH), catalyzed reporter deposition-FISH (CARD-FISH), Sybr green II direct counting, and the most probable number (MPN) cultivation technique. Depth profiles of cell numbers showed that the compositions of the microbial communities are greatly different at the three sites and also strongly varied between zones of oxidized and unoxidized tailings. Maximum cell numbers of up to 109 cells g−1 dry weight were determined in the pyrite or pyrrhotite oxidation zones, whereas cell numbers in unoxidized tailings were significantly lower. Bacteria dominated over Archaea and Eukarya at all tailing sites. The acidophilic Fe(II)- and/or sulfur-oxidizing Acidithiobacillus spp. dominated over the acidophilic Fe(II)-oxidizing Leptospirillum spp. among the Bacteria at two sites. The two genera were equally abundant at the third site. The acidophilic Fe(II)- and sulfur-oxidizing Sulfobacillus spp. were generally less abundant. The acidophilic Fe(III)-reducing Acidiphilium spp. could be found at only one site. The neutrophilic Fe(III)-reducing Geobacteraceae as well as the dsrA gene of sulfate reducers were quantifiable at all three sites. FISH analysis provided reliable data only for tailing zones with high microbial activity, whereas CARD-FISH, Q-PCR, Sybr green II staining, and MPN were suitable methods for a quantitative microbial community analysis of tailings in general.
7
PARLAK, Mehmet, Tülay TUNÇAY, and Altıngül ÖZASLAN PARLAK. "Heavy metals in tailings and soils in the Pb-Zn mining areas of North-west Türkiye and health risk evaluations." International Journal of Agriculture, Environment and Food Sciences 8, no. 1 (March 4, 2024): 131–48. http://dx.doi.org/10.31015/jaefs.2024.1.14.
Full textAbstract:
Improper mining waste and tailing management in Pb-Zn mining areas (Balya and Koru) in the north-west Türkiye have not been researched sufficiently. Accordingly, concentrations of heavy metal were determined in mine tailing and soils taken from Balya and Koru, and a health risk evaluation caused by heavy metals was performed. Average Cd, Cr, Cu, Mn, Ni, Pb, and Zn concentrations in mine tailings in Balya are 35.2, 17.8, 354.7, 1735, 10, 10089, 3730 mg kg-1 and these values were determined as 9.9, 8.9, 101.5, 1308, 4.5, 1871, 1375 mg kg-1 in the tailings in Koru, respectively. The concentrations of heavy metals in the soil samples taken from both Balya and Koru were determined to be lower. The evaluation of heavy metals’ health risks was performed according to both non-carcinogenic and carcinogenic effects. The primary route of heavy metals in adults and children has been determined by oral intake. For both children and adults, the order of the carcinogenic effects of heavy metals in mine tailings and soils in Balya and Koru was Cd > Pb > Ni > Cr. As the carcinogenic risk values of Cd and Pb for adults and children in mine tailing and soils in Balya were above the limit value, the children’s Cd carcinogenic risk values were found above the limit value in mine tailing and soils in Koru. The mining area in both Balya and Koru poses a risk to human health since it is close to settlements.
8
Kiventerä, Jenni, Juho Yliniemi, Lukasz Golek, Jan Deja, Victor Ferreira, and Mirja Illikainen. "Utilization of sulphidic mine tailings in alkali-activated materials." MATEC Web of Conferences 274 (2019): 01001. http://dx.doi.org/10.1051/matecconf/201927401001.
Full textAbstract:
Disposal of mine tailings is one of the most important environmental issues during the mining lifetime. Especially sulphidic tailings can cause environmental and ecological risks because of their tendency to oxidize in the presence of water or air. Because of small particle size and harmful chemical properties, utilization possibilities of sulphidic mine tailings are limited. The aim of the present study was to develop technologies to utilize sulphidic mine tailings in alkali activated materials. Alkali-activated materials also known as geopolymers are nanosized zeolite type or slightly amorphous materials comparable to traditional Portland cement concrete, which can physically encapsulate or chemically stabilize the hazardous elements such as heavy metals into the 3D structure. Mine tailing based geopolymer aggregates were successfully produced from sulphidic mine tailings with good physical properties. The geopolymer aggregates performed as a concrete aggregate comparable to commercial lightweight aggregates. In addition, geopolymer mortars were prepared from mine tailings. In mortar application, there is a need to add some co-binder such as blast furnace slag in order to achieve high strength for the material. The mine tailing based geopolymer structure has an ability to stabilize a large number of cationic species into the structure while some anionic species were not able to immobilize by alkaline activation.
9
Dosic, Aleksandar, Dragana Tomasevic-Pilipovic, Miladin Gligoric, Bozo Dalmacija, Djurdja Kerkez, Natasa Slijepcevic, Jelena Spasojevic, and Zoran Obrenovic. "Green remediation of tailings from the mine using inorganic agents." Chemical Industry 71, no. 2 (2017): 155–65. http://dx.doi.org/10.2298/hemind160419026d.
Full textAbstract:
Increasing amounts of residues and waste materials coming from industrial activities in different processes have become an increasingly urgent problem for the future. The paper presents the problem of mine tailings generated in mine ?Sase? (Republic of Srpska, Bosnia and Herzegovina) with high metal content (Pb, Cu and Zn). Dumpsite of this tailing represents potential risk for water bodies in the vicinity of this location. Chosen treatment process was stabilization/solidification (S/S). Inorganic agents used in this study were fly ash and red mud that represent secondary industrial waste generated on locations relatively near the mine. Therefore, their application can be used as an example of a sustainable solution of regional environmental problem. Further investigations are related to the impact of various factors on metals leaching from mine tailings solidified/stabilized material using the above mentioned immobilization agents. The performance of the immobilizing procedures was examined using several leaching tests: ANS 16.1, TCLP, DIN, MWLP. The results indicated that all S/S samples can be considered as non-hazardous waste, as all leached metal concentrations met the set criteria. These results will further enable the modelling of metals behaviour during long-term leaching from treated mine tailing. The data are invaluable in terms of economically and environmentally sound management of mine tailing.
10
Si, Meiyan, Yunjian Chen, Chen Li, Yichao Lin, Jianhong Huang, Feng Zhu, Senlin Tian, and Qun Zhao. "Recent Advances and Future Prospects on the Tailing Covering Technology for Oxidation Prevention of Sulfide Tailings." Toxics 11, no. 1 (December 22, 2022): 11. http://dx.doi.org/10.3390/toxics11010011.
Full textAbstract:
Acid mine drainage, produced from sulfur-containing mine waste exposed to air, water, and bacteria, is considered as a serious environmental pollutant because of its extremely low pH and excessive heavy metals. In order to solve the ecological environment problems caused by the acid mine drainage, treatment methods such as neutralization, adsorption, passivation, bio-inhibition, and physical coverage have been developed. Nevertheless, these methods are terminal treatment methods, which are unable to prevent the generation of acid mine drainage at the source. Recently, it is noteworthy that the tailing covering technology is particularly emphasized, owing to its superior source control capability. By reducing the contact with air, water, and bacteria, the oxidation of sulfide tailings is significantly reduced, thus avoiding the production of acid mine drainage. To date, massive research has been studied and parts of technologies have been applied, but the review on the principles, processes, and applications of these technologies are still lacking. Thus, the present review aims to increase the knowledge related to the most relevant application of tailing covering technology with the following aspects: (i) the background, concepts, and performance of tailing covering technology; (ii) the applicable conditions for each tailings coverage system and their advantages and limitations; and (iii) the future perspective of this technology.
11
HILMI, MUHAMMAD, HAMIM HAMIM, YOHANA C. SULISTYANINGSIH, and TAUFIKURAHMAN TAUFIKURAHMAN. "Growth, histochemical and physiological responses of non-edible oil producing plant (Reutealis trisperma) to gold mine tailings." Biodiversitas Journal of Biological Diversity 19, no. 4 (July 1, 2018): 1294–302. http://dx.doi.org/10.13057/biodiv/d190416.
Full textAbstract:
Hilmi M, Hamim H, Sulistyaningsih YC, Taufikurahman. 2018. Growth, histochemical and physiological responses of nonedibleoil producing plant (Reutealis trisperma) to gold mine tailings. Biodiversitas 19: 1294-1302. Reutealis trisperma (Blanco) AiryShaw is a non-edible biodiesel producing plant that is able to grow well in various unfavorable environmental conditions. The studyaimed to analyze the growth, physiological, and anatomical responses of R. trisperma to gold mine tailings. Three-month-old of R.trisperma were grown in 8 kg of polybags contained with mixed soil-compost medium treated with 0, 25, 50 and 100% of gold minetailings for 3 months. Root and shoot growth, physiological and anatomical characters, and histochemical analysis of Pb inside the rootsand leaves were examined. The root and shoot growth as well as chlorophyll a and b contents of R. trisperma grown in sole gold minetailing at 100% significantly decreased, while at the lower concentration of gold mine tailings, the decrease of the growth performanceswas not significant, or even increased shown in that of 25% of tailing treatment. The treatment of gold mine tailing at 100% alsoinduced lipid peroxidation, indicated by the significant increase in malondialdehyde (MDA) contents in the root as well as the leaves.Histochemical analysis showed that accumulation of Pb occurred both in roots as well as in leaves of R. trisperma treated with 100% oftailings. High-level tailing treatment also induced anatomical alteration in roots as well as leaves of the species. These results indicatedthat gold mine tailings induced oxidative stress in roots and leaves of R. trisperma resulted in growth inhibition.
12
Tebogo, Mashifana, and Sithole Thandiwe. "Evaluation of Chemically Treated and Lime Stabilized Gold Mine Tailings: Effect on Unconfined Compressive Strength." Key Engineering Materials 803 (May 2019): 366–70. http://dx.doi.org/10.4028/www.scientific.net/kem.803.366.
Full textAbstract:
For over 200 years of gold mining, little has been done to minimize the negative impact of gold mine tailings to the environment. The overall generation of tailing by South African gold mining industry is approximately 300 million tons of slimes. This study was conducted to develop an effective chemical treatment process to reduce major heavy metals in the gold mine tailings, to stabilize the treated gold tailings with lime, to enhance its unconfined compressive strength. Two reagents were investigated namely, citric acid and oxalic acid, the concentrations were varied between 0.25 M and 0.5 M. The leaching tests were conducted at temperatures of 25, 50 and 85 °C. The Elemental, mineralogical and micrograph analysis were conducted on the raw gold mine tailing, treated tailings and stabilized tailing. The results showed a higher relative proportion of magnesium, aluminium silicon, iron and sulphate. The relative proportion for all other metals was below 1 wt%. Citric acid proved to be the best chemical reagent and the optimum results were obtained when the leaching tests were conducted at a temperature of 85 °C, with the concentration of 0.5 M. The final treated solid products had major constituents which enhances material strength development, thus silica and aluminium. Stabilising the treated tailings with 30% hydrated lime, improved the unconfined compressive strength from 1.14 MPa to 2.9 MPa.
13
Asmund, G. "Environmental studies in connection with mining activity in Greenland." Rapport Grønlands Geologiske Undersøgelse 128 (December 31, 1986): 13–22. http://dx.doi.org/10.34194/rapggu.v128.7921.
Full textAbstract:
The Geological Survey of Greenland monitors the environment around mining sites in Greenland. At the lead-zinc mine Black Angel at Marmorilik, tailings are disposed directly into the sea and this resuIts in considerable dissolution of zinc, cadmium and especially lead. At Ivigtut, where cryolite was formerly mined, dispersion of lead into the marine environment has been observed, and at the depleted lead-zinc mine at Mestersvig severe metal dispersion from a land-based tailing deposit has been demonstrated.
14
Li, Gang, Ying Jie Chen, and Hao Di. "The Study on Used Properties of Mine Tailings Sand." Advanced Materials Research 859 (December 2013): 87–90. http://dx.doi.org/10.4028/www.scientific.net/amr.859.87.
Full textAbstract:
Nowadays,there are a large number of mining tailings in China,ore tailings not only pollute the environment,but also consume plenty of land resources,even threat the safety of people's life.In this article ,researches have been done to gradation of grain of tailings in QinHuangdao by the test,and compressive strength and loss on ignition with different volume of tailing concrete.
15
Liu, Xu Qing, Shi Bin Xia, Hao Yuan, and Zhong Li Cai. "Distribution Disciplines and Cause of Harmful Elements in Copper Tailing Sand." Applied Mechanics and Materials 675-677 (October 2014): 1005–11. http://dx.doi.org/10.4028/www.scientific.net/amm.675-677.1005.
Full textAbstract:
Measure content of fresh tailing sand in a certain skarn type copper mine selection tailing sand warehouse, lead, cadmium, arsenic, nickel and zinc elements, etc in old tailing sand by ICP-AES. Carry out eluviations test of tailing sand and leaching test of tailing sand by horizontal vibration method and Sulphuric-Nitric acid method respectively. Discuss with phase constitution of harmful elements such as arsenic in tailing sand by XRD analysis chromatogram of tailing sand. Compare with content analysis result and mineral constitution of related elements in raw mine on the basis. Research migration and distribution disciplines of associated harmful elements in raw mine to tailing sand by floatation. Test result shows that arsenic, zinc, cadmium and lead elements in raw mine deeply concentrated in tailing sand after mine selection. Percentage is 96.89%, 92.0%, 91.65% and 41.12% respectively. Main existence form of As in tailing sand is FeAsS (arsenopyrite). It intergrowth with pyrite (FeS2); Zn mainly exists in a ZnS (sphalerite) form. Pb, Cd and As have migration trend from upstream to downstream of tailing sand warehouse and from shallow layer to deep layer. Dissolution rate of Cd, Cu, Zn, Cr and Pb under eluviation and weak acid leaching conditions is lower. However, they have release trend under acid conditions. Arsenic element is special as follows: It is undetected in various points during Sulphuric-Nitric digestion. However, tiny detection of fresh surface layer and deposit layer out of old tailing sand by horizontal vibration method prompts stability of arsenic tailing sand FeAsS and alarm of leaching activity under alkaline conditions. Cause of arsenic tailing sand FeAsS is that it is brought by raw mine without large destruction to FeAsS during mine selection process.
16
Wang, Haibin, Quan Chen, Liwei Zhang, and Xiaochun Li. "A framework to determine soil-water retention relation for mine wastes and its applications in emergency risk assessment." Hydrology Research 52, no. 2 (March 17, 2021): 389–413. http://dx.doi.org/10.2166/nh.2021.126.
Full textAbstract:
Abstract Tailing dams and waste dumps formed by the accumulation of mine wastes are usually at long-term unsaturated state under evaporation and consolidated drainage conditions. Soil-water retention relation is one of the key constitutive relations to analyze the seepage processes in tailing dams and waste dumps. In this study, typical coarse- and fine-grained tailings from a metallurgical mine were chosen to study the soil-water retention characteristics of the tailing samples. To begin with, the relationship between volumetric water content and suction of the tailing samples was experimentally measured, and typical soil-water characteristic curves (SWCCs) (i.e., Gardner, van Genuchten and Fredlund–Xing curves) were applied to fit the experimental data. After that, four empirical models to estimate the parameters in SWCCs (i.e., Aubertin-1998 model, Aubertin-2003 model, Vanapalli-2005 model and Chin-2010 model) were tested, and the Vanapalli-2005 model was the best-fit model for the tailing samples. Furthermore, this study proposes a generalized emergency risk assessment soil-water retention characteristics model for tailing dams and waste dumps, and a framework for the quick estimation of parameters in the SWCC is proposed as well. The recommended soil-water retention characteristics model and the related parameters can be used to predict water levels in tailing dams and waste dumps, which are very helpful for emergency risk assessment under rainstorm or flooding conditions.
17
Ekyastuti, Wiwik, and Dwi Astiani. "Produksi Kompos Untuk Mendukung Keberhasilan Reklamasi Lahan Tailing Bekas Tambang Emas Rakyat." JPPM (Jurnal Pengabdian dan Pemberdayaan Masyarakat) 2, no. 1 (March 30, 2018): 15. http://dx.doi.org/10.30595/jppm.v2i1.1711.
Full textAbstract:
ABSTRAK Tailing bekas tambang emas rakyat di Kecamatan Menjalin Kabupaten Landak Kalimantan Barat merupakan lahan marginal yang didominasi oleh pasir, sehingga menjadi kendala untuk revegetasi. Revegetasi merupakan salah satu bagian penting dalam proses reklamasi lahan bekas tambang. Guna menjamin keberhasilan revegetasi, maka perbaikan fisik-kimia tailing sangat diperlukan dan penambahan bahan organik menjadi jalan keluarnya. Oleh karena itu, tujuan dari kegiatan ini adalah pemberdayaan masyarakat Menjalin untuk memproduksi kompos, sehingga bahan organik berupa kompos tersedia secara cukup bahkan berlimpah guna mendukung kegiatan reklamasi tailing bekas tambang emas rakyat. Kegiatan KKN PPM menjadi jalan untuk mencapai tujuan tersebut, dan metode yang digunakan adalah partisipatif. Didalam kegiatan ini mahasiswa dilibatkan sebagai mentor yang mendampingi masyarakat selama sebulan penuh di lapangan. Peserta kegiatan adalah masyarakat petani dan karang taruna. Hasil kegiatan menunjukkan masyarakat sangat antusias dalam mengikuti kegiatan ini. Hal ini terbukti dari partisipasi masyarakat yang sesuai target yaitu minimal 30 orang per lokasi kegiatan. Masyarakat selalu aktif di setiap tahap kegiatan pembuatan kompos berbahan dasar sampah organik mulai dari persiapan bahan, pembuatan starter mikroorganisme dekomposer, pembuatan bibit kompos, proses pengomposan sampai pengemasan kompos yang sudah jadi. Di akhir kegiatan ketrampilan masyarakat meningkat dan dihasilkan kompos yang dapat digunakan langsung untuk kegiatan revegetasi lahan tailing bekas tambang emas rakyat di sekitar masyarakat. Kata kunci: Kompos Berbahan Dasar Sampah Organik, Reklamasi, Tailing Bekas Tambang Emas. ABSTRACT Tailings ex community gold mine in sub-district of Menjalin district of Landak West Kalimantan is very marginal that dominated by sand, thus becoming an obstacle to revegetation. Revegetation is an important part of the mine reclamation process. In order to ensure the success of revegetation, the physical-chemical repairs of tailings are necessary and the addition of organic matter becomes the solution. Therefore, the objective of this activity was to empower the people of Menjalin to produce compost, so that the organic material in the form of compost was available sufficiently and abundantly to support the reclamation of tailings ex community gold mine. The activity of KKN PPM became a way to achieve that goal, with the method was participatory. In this activity students involved as mentors who accompany the community for a full month in the field. Participants were farmers and youth communities. The results showed that the community was very enthusiastic in following this activity. This is evident from the community participation that targeted of at least 30 people per location of activities. The community is always active at every stage of activity of composting made from organic waste, starting from material preparation, making of starter microorganism as decomposers, making of starter of compost, composting process until packaging of compost. Through this activity the skills of the community are increased and compost is produced which can be used directly for the revegetation of tailing ex community gold mine around these communities. Keywords: Compost Made From Organic Waste, Reclamation, Tailings Ex Gold Mine.
18
Hindersah, R., Y. Sunarya, M. Arifin, and R. Priyadi. "Performance of Centrocema grown on mercury-contaminated tailing inoculated with beneficial bacteria: Preliminary study." IOP Conference Series: Earth and Environmental Science 882, no. 1 (November 1, 2021): 012061. http://dx.doi.org/10.1088/1755-1315/882/1/012061.
Full textAbstract:
Abstract Low levels of major essential nutrients and high mercury (Hg) content in gold mine tailings can inhibit plant growth. An inexpensive and effective strategy to overcome these obstacles was inoculation of plant-growth promoting bacteria and planting legume cover crops (LCC). A greenhouse experiment was conducted to evaluate the effect of isolates of Nitrogen Fixing Bacteria (NFB) and Phosphate Solubilizing Bacteria (PSB) on some growth characteristics of LCC Censtrosema pubescens (butterfly pea) grown in Hg-contaminated tailing of gold mine tailing. Moreover, the research was aimed to verify the viability of two bacterial groups in tailing after inoculation. The experiment was set up in randomized block design to test single and mixed inoculation of NFB and PSB. The experiment verified that the single inoculation and mixture of two bacteria did not change plant properties compared to the control treatment. Although the statistical analysis was not significant, there were slightly increase in root length as well as NFB and PSB populations of inoculated plants.
19
Jiang, Chenggang, Yangdong Wang, Yitai Chen, Shufeng Wang, Changcheng Mu, and Xiang Shi. "The Phytoremediation Potential of 14 Salix Clones Grown in Pb/Zn and Cu Mine Tailings." Forests 15, no. 2 (January 29, 2024): 257. http://dx.doi.org/10.3390/f15020257.
Full textAbstract:
Willows are suitable candidates for phytoremediation projects. A pot experiment was conducted to evaluate the potential of using Salix unrooted cuttings for the phytoremediation of lead/zinc (Pb/Zn) and copper (Cu) mine tailings. Cuttings of 14 Salix clones were directly rooted into pots containing mine tailings. The 14 clones showed different levels of tolerance to tailing treatments. A total of 71.40% and 85.70% of the S. jiangsuensis ‘172’ cuttings either grown in Pb/Zn or Cu tailings survived, respectively. However, the other clones had lower survival rates, and the values were no more than 40%. Usually, all clones produce less biomass in an extremely contaminated environment. Clonal variation in biomass yield was observed in this research. The surviving clones, such as S. integra ‘WSH’, S. matsudana ‘14’, S. chaenomeloides ‘3’, S. chaenomeloides ‘4’, and S. chaenomeloides ‘5’ (Pb/Zn tailing), S. integra ‘HY’, S. integra ‘WSH’, S. matsudana ‘14’, S. matsudana ‘19’, and S. matsudana ‘34’ (Cu tailing) produced relatively more biomass in this study. In general, all the clones presented lower bioconcentration factor values for the tailings of heavy metals. In principle, all clones could easily take up and translocate Zn and Cd from the tailings to aboveground parts, especially S. integra. All clones exhibited a huge variation in their heavy metal accumulation capacity. As stated above, the direct utilization of cuttings for phytoremediation is a viable option. S. jiangsuensis ‘172’ had a high tolerance capacity and would be a recommended candidate for future phytoremediation projects in soils containing tailings with an extremely high concentration of heavy metals. These results provide crucial information about willow growth and metal accumulation capacity in extremely adverse environments.
20
Mendez, Monica O., Julia W. Neilson, and Raina M. Maier. "Characterization of a Bacterial Community in an Abandoned Semiarid Lead-Zinc Mine Tailing Site." Applied and Environmental Microbiology 74, no. 12 (April 18, 2008): 3899–907. http://dx.doi.org/10.1128/aem.02883-07.
Full textAbstract:
ABSTRACT Bacterial diversity in mine tailing microbial communities has not been thoroughly investigated despite the correlations that have been observed between the relative microbial diversity and the success of revegetation efforts at tailing sites. This study employed phylogenetic analyses of 16S rRNA genes to compare the bacterial communities present in highly disturbed, extremely (pH 2.7) and moderately (pH 5.7) acidic lead-zinc mine tailing samples from a semiarid environment with those from a vegetated off-site (OS) control sample (pH 8). Phylotype richness in these communities decreased from 42 in the OS control to 24 in the moderately acidic samples and 8 in the extremely acidic tailing samples. The clones in the extremely acidic tailing sample were most closely related to acidophiles, none of which were detected in the OS control sample. The comparison generated by this study between the bacteria present in extremely acidic tailing and that in moderately acidic tailing communities with those in an OS control soil provides a reference point from which to evaluate the successful restoration of mine tailing disposal sites by phytostabilization.
21
Tamás, János, and Elza Kovács. "Vegetation Pattern and Heavy Metal Accumulation at a Mine Tailing at Gyöngyösoroszi, Hungary." Zeitschrift für Naturforschung C 60, no. 3-4 (April 1, 2005): 362–68. http://dx.doi.org/10.1515/znc-2005-3-421.
Full textAbstract:
Abstract Vegetation at an abandoned heavy metal bearing mine tailing may have multifunctional roles such as modification of water balance, erosion control and landscape rehabilitation. Research on the vegetation of mine tailings can provide useful information on tolerance, accumulation and translocation properties of species potentially applicable at moderately contaminated sites. Analyses of the relationship between heavy metal content (Pb, Zn and Cu) and vegetation in a mine tailing were carried out. These analyses included: (1) spatial analysis of relationship among heavy metal distribution, pH and vegetation patterns, and (2) analysis of heavy metal accumulation and translocation in some plant species. Presence of vegetation was found to be significantly dependent on pH value, which confirms that phytotoxicity is a function of element concentration in solution, which is primarily controlled by pH value in mine tailings. Among the most abundant plant species, dewberry (Rubus caesius), vipersbugloss (Echium vulgare), scarlet pimpernel (Anagallis arvensis) and narrowleaf plantain (Plantago lanceolata) accumulate significant amounts of Pb, Cu and Zn, while in the case of annual bluegrass (Poa annua) only Pb can be measured in elevated contents. Considering the translocation features, scarlet pimpernel, narrowleaf plantain, and dewberry accumulate heavy metals primarily in their roots, while heavy metal concentration in vipersbugloss and annual bluegrass is higher in the shoots.
22
Ilieva, Darya, Lyudmila Angelova, Temenuzhka Radoykova, Andriana Surleva, Georgi Chernev, Petrica Vizureanu, Dumitru Doru Burduhos-Nergis, and Andrei Victor Sandu. "Characterization of Bulgarian Copper Mine Tailing as a Precursor for Obtaining Geopolymers." Materials 17, no. 3 (January 23, 2024): 542. http://dx.doi.org/10.3390/ma17030542.
Full textAbstract:
Valorization of high-volume mine tailings could be achieved by the development of new geopolymers with a low CO2 footprint. Materials rich in aluminum and silicon with appropriate solubility in an alkaline medium can be used to obtain a geopolymer. This paper presents a study of copper mine tailings from Bulgaria as precursors for geopolymers. Particle size distribution, chemical and mineralogical composition, as well as alkaline reactivity, acidity and electroconductivity of aqueous slurry are studied. The heavy metal content and their mobility are studied by leaching tests. Sequential extraction was applied to determine the geochemical phase distribution of heavy metals. The studied samples were characterized by high alkalinity, which could favor the geopolymerization process. The water-soluble sulphates were less than 4%. The Si/Al ratio in mine tailing was found to be 3. The alkaline reactivity depended more so on the time of extraction than on the concentration of NaOH solution. The main part of the heavy metals was found in the residual fraction; hence, in high alkaline medium during the geopolymerization process, they will stay fixed. Thus, the obtained geopolymers could be expected to exert low environmental impact. The presented results revealed that studied copper mine tailing is a suitable precursor for geopolymerization.
23
Filcenco-Olteanu, Antoneta, Lena Alakangas, Antoio Fiuza, Marius Zlagnean, and Nicolae Tomus. "Physical chemical characterization of historical mining waste and ARD prediction tests." E3S Web of Conferences 18 (2017): 01031. http://dx.doi.org/10.1051/e3sconf/20171801031.
Full textAbstract:
There are thousands of historical mine tailings and metallurgical residues present on inactive metal mining sites which have been abandoned. However, the potential release of dissolved metals, acidity, or suspended particulates from mine-waste dumps can be a serious and long-lasting problem. A variety of environmental impacts may occur at this abandoned mine sites and leading the list is acid generation, which is one of the main problems from metal mining. The objective of the present study was to characterize and evaluate the Romanian historical tailing of Sasar-Red Valley, near Baia Mare. This involved physical and chemical characterization of the materials and its acid generating potential. Sasar tailing impoundment contains 8.5 million m3 of tailings and occupies an area of 32.5 hectares. Tailings samples were collected from different depths in three sampling points, and characterized by grain size, chemical elements concentration, elements distribution of elements in depth, paste pH, acid-base account and net acid generation tests. Acid base accounting (ABA) tests in conjunction with net acid generation (NAG) tests classified the samples into the category of ‘potentially acid generating’. This paper presents a synthesis of works performed in the Improve Resource Efficiency and Minimize Environmental Footprint (REMinE) project.
24
Zhao, Kang, Qiang Li, Yajing Yan, Keping Zhou, Shuijie Gu, and Shengtang Zhu. "Numerical Calculation Analysis of the Structural Stability of Cemented Fill under Different Cement-Sand Ratios and Concentration Conditions." Advances in Civil Engineering 2018 (August 27, 2018): 1–9. http://dx.doi.org/10.1155/2018/1260787.
Full textAbstract:
The effect of lime-sand ratio and slurry concentration on the mechanical properties of backfills is important. To achieve green and high-efficiency mining, accurately determining the optimum ratio of cemented tailings for certain tungsten tailings and ensuring the safety and stability of the mine stope structure are important. The cement-sand ratios used in this research were 1 : 6 and 1 : 8. The mechanical properties were evaluated by using 68%, 72%, and 78% of tailing cemented filling materials. The corresponding physical and mechanical parameters were obtained through uniaxial compression, splitting, and shearing mechanical experiments on the backfill specimens. FLAC3D was used to investigate the mechanical properties of cement-filled pillars and the stability of supporting surrounding rocks on the basis of the mine’s current room pillar structure size parameters and mining sequence. The key factors that affect the stability of the goaf were analyzed by evaluating the plastic zone area of the stope, maximum and minimum principal stresses, and displacement change. The structural characteristics of stope structures and changes of rock mass damage were obtained under different cement-tailing ratios and concentrations. A cemented backfill with a cement-tailing ratio of 1 : 8 and a concentration of 68% was selected as the best solution for the mine in terms of safety and economic considerations.
25
Susilawati, Rita. "BIOLEACHING FOR THE RECOVERY OF METALS PEMISAHAN UNSUR LOGAM DENGAN BIOLEACHING." Buletin Sumber Daya Geologi 10, no. 3 (November 8, 2015): 78–88. http://dx.doi.org/10.47599/bsdg.v10i3.149.
Full textAbstract:
A simple laboratory experiment has been conducted in order to demonstrate the ability of bacteria to leach the metal elements from insoluble ores or solid substrates. The experiment was conducted in a leaching column that was set up using 5 cc syringe that contained 1 cc of glass wool and 3.5cc of mine tailings. The basal salt was used as an inoculation media while mine tailing was used as a leaching subject and a source of bacterial leaching. Bacterial leaching was isolated using the most probable number (MPN) technique. Overall, the results of the experiment showed the capability of bioleaching process to recover metals from the mine tailings.
26
Sun, Guang Hua, and Xin Lv. "Study of Utilizing of Massive Iron Tailings Resource." Advanced Materials Research 156-157 (October 2010): 824–28. http://dx.doi.org/10.4028/www.scientific.net/amr.156-157.824.
Full textAbstract:
The iron tailings are the main source of solid waste of mining, as well as the potential resource. Regarding the characteristic and scale of iron tailings in China, this paper discusses the current situation and urgency of developing and utilizing of massive mining tailings, and the progresses of related researches on metal recovery, tailings processing and mutual utilization between tailings and mine-out stope. This paper also presents that using the tailing back-fill the mine-out stope currently is the best approach for massive resource utilization, based on sufficient metal elements recovery. This approach addresses the conflict of lands occupation due to the surface waste stacks, and gives the developing orientation of massive tailings resource utilization.
27
Zúñiga-Barra, Héctor, Eduardo Ortega-Martínez, Javiera Toledo-Alarcón, Álvaro Torres-Aravena, Lorena Jorquera, Mariella Rivas, and David Jeison. "Potential Use of Microbially Induced Calcite Precipitation for the Biocementation of Mine Tailings." Minerals 13, no. 4 (April 1, 2023): 506. http://dx.doi.org/10.3390/min13040506.
Full textAbstract:
Mining activities offer clear economic benefits for mineral-rich countries. However, mining operations can produce several environmental impacts. Many of these are associated with generating and managing mining waste known as tailings, which are typically stored in surface facilities. Windblown dust emissions from tailing deposits can cause severe damage to local ecosystems and adverse health effects for the surrounding population. Microbially induced calcite precipitation (MICP) can be used for the superficial biocementation of tailings, thereby preventing such emissions. This research studied the capacity of MICP for the biocementation of tailings. The effect of applying different doses of biocementation reagents and two different methods for their application were evaluated. Results show that a relevant increase in surface strength can be achieved, especially if reagents are mechanically mixed with the tailings to induce a more homogeneous distribution of precipitates. Micrographical and mineralogical analysis by SEM, FTIR and XRD analysis showed the precipitation of calcium in the form of anorthite, calcite or vaterite. Overall results indicate that calcite precipitation can be induced in tailing by microorganisms with urease activity, providing a potential technique for the biocementation of this material.
28
Peng, Liang, Bokun Zheng, TengLong Huang, Xin Zhu, Yang Liu, and Fan Hu. "Study and Application of Full Tailing Deep Concentration and Rapid Dewatering Technology." Advances in Civil Engineering 2022 (July 12, 2022): 1–6. http://dx.doi.org/10.1155/2022/6067529.
Full textAbstract:
The problem of unstable full tailing sand concentration and dewatering in some mine filling systems has led to substandard bottom flow concentration of tailing sand concentration equipment, wide fluctuation ranges of filling concentration, substandard return water concentration at filling stations, and high flocculant addition cost. Through flocculation and sedimentation tests, the effect of the flocculant and sedimentation law and the effect of slurry concentration on sedimentation rate were studied, and the field application of the flocculant addition point model was verified. The results showed that (1) when the dose of the flocculant was added, the F1-type polyacrylamide as the flocculant made the best settling effect of the whole tailing sand in the test, as judged by comparing the falling rate of the clarified layer and the clarification degree of the supernatant. (2) With the increasing flocculant concentration, the settling speed of tailing sand gradually becomes slower; the range of the best settling concentration was 8%–18% of tailing sand concentration; and the concentration of tailing sand corresponding to the maximum solid flux was 10%–14%. (3) Relying on the site conditions of a domestic copper mine, the feed concentration was diluted from 20%–25% to 10%–12%, and the overflow water clarification test was less than 300 ppm, which verified the flocculant test and the correctness of the flocculant addition point model. The type and dosage of the flocculant as well as the feed concentration of the tailing slurry all have an effect on the flocculation and settling effect. The results of the study can provide some implications for the efficient flocculation and settlement of tailings in other mines.
29
Abiodun O FATOYE. "Geochemical characteristics of unexplored mine tailings in Ijero Ekiti, Nigeria." GSC Advanced Research and Reviews 11, no. 2 (May 30, 2022): 057–60. http://dx.doi.org/10.30574/gscarr.2022.11.2.0128.
Full textAbstract:
Waste materials from mining tailings, often contain significant amounts of potentially valuable minerals. This study aimed at unearthing the valuable minerals in Ijero Ekiti mine tailings. The tailing samples were randomly collected in five locations of the study area. The samples were analyzed for selected physico-chemical parameters: pH values, electrical conductivity, chloride, organic matter and X-Ray Fluorescence Spectrometry (XRF) using standard analytical techniques. The physico-chemical parameters of tailings range in different concentration. The x-ray fluorescence spectroscopy analysis of the samples shows that the samples contain high concentrations of SiO2, Al2O3, Fe2O3, and other trace compounds. The results of this study established that the tailings valuable minerals.
30
Chen, Liwei, Jun Wu, Jian Lu, Chulin Xia, Michael A. Urynowicz, Zaixing Huang, Li Gao, and Mingying Ma. "Speciation, Fate and Transport, and Ecological Risks of Cu, Pb, and Zn in Tailings from Huogeqi Copper Mine, Inner Mongolia, China." Journal of Chemistry 2018 (2018): 1–8. http://dx.doi.org/10.1155/2018/2340542.
Full textAbstract:
Tailings collected from the tailing reservoir at Huogeqi Copper Mine, located in Inner Mongolia, China, were used in a leachate study to evaluate the acid potential, neutralization potential, and possibility for producing acid mine drainage (AMD) from the site. The speciation of Cu, Pb, and Zn contained in the tailings was also determined during the leachate study to further access the potential migration abilities of these metals. The results showed that the tailings did not produce significant AMD as the pH of the leachate ranged from 7 to 9 and decreased with time. The Cu, Pb, and Zn concentrations were high, ranging from 439.1 to 4527 mg/kg in the tailings and from 0.162 to 7.964 mg/L in the leachate, respectively. Concentrations of metals in the leachate and tailings were positively correlated. Over 60% of the Cu in the tailing samples existed in an oxidizable form. Most of the Pb also existed in its oxidized form, as did the silicate and Zn. Metals usually have higher mobility in their exchangeable and oxidizable forms and as such represent a higher potential risk to the environment. Results of risk assessment code also revealed that metals in tailings exerted medium to high risks to the environment.
31
Ge, Sheng Tao, Yu Bao Bi, Jun Kai Wang, Sai Sai Li, Gen Zhang, and Hai Jun Zhang. "Effect of Alkali Activator on Preparation, and Mechanical and Thermal Properties of Iron Mine Tailing-Based Lightweight Materials." Solid State Phenomena 281 (August 2018): 940–45. http://dx.doi.org/10.4028/www.scientific.net/ssp.281.940.
Full textAbstract:
Lightweight materials applied in construction field were prepared using waste iron mine tailings (WIMT) as raw materials, the commercial silicate cement (CSC) as cementing agent, NaOH as the alkali activator, and triethanolamine lauryl sulfate (TLS) as foaming agent via foam-gelcasting method. The effects of water/cement (W/C) mass ratio (0.6-1.0), addition of NaOH (0-0.15wt%) and foaming agent (0-0.3vol%) on the porosity, bulk density, and mechanical properties of the iron mine tailing-based lightweight materials were studied. The results showed that the mechanical properties of iron mine tailing-based lightweight materials were improved by adding NaOH, the as-prepared materials had a 7-day compressive strength of 5.18 MPa, porosity of 51.40%, bulk density of 1.73 g/cm3and thermal conductivity of 0.193 W・(m-1K-1) when the W/C ratio was 0.8, the mass ratio of WIMT/CSC/NaOH 1.85:1:0.15, and foaming agent content 0.3vol%.
32
Xie, Jincheng, Dengpan Qiao, Runsheng Han, and Jun Wang. "Tailings Settlement Velocity Identification Based on Unsupervised Learning." Metals 11, no. 12 (November 26, 2021): 1903. http://dx.doi.org/10.3390/met11121903.
Full textAbstract:
In order to reasonably and accurately acquire the settlement interface and velocity of tailings, an identification model of tailing settlement velocity, based on gray images of the settlement process and unsupervised learning, is constructed. Unsupervised learning is used to classify stabilized tailing mortar, and the gray value range of overflow water is determined. Through the identification of overflow water in the settlement process, the interface can be determined, and the settlement velocity of tailings can be calculated. Taking the tailings from a copper mine as an example, the identification of tailings settling velocity was determined. The results show that the identification model of tailing settlement speed based on unsupervised learning can identify the settlement interface, which cannot be manually determined in the initial stage of settlement, effectively avoiding the subjectivity and randomness of manual identification, and provide a more scientific and accurate judgment. For interfaces that can be manually recognized, the model has high recognition accuracy, has a rapid and efficient recognition process, and the relative error can be controlled within 3%. It can be used as a new technology for measuring the settling velocity of tailings.
33
Hou, Yun Fen, and Xin Jia. "Usage of Iron Mine Tailing Sand on Concrete." Advanced Materials Research 671-674 (March 2013): 1856–59. http://dx.doi.org/10.4028/www.scientific.net/amr.671-674.1856.
Full textAbstract:
Two iron mine tailing sands and manufactured sands with different fineness modulus are studied and they are mixed into four mixed sands which fineness modulus is 2.6~3.0 by controlling mixing amount of iron mine tailing sand. The influence of mixed sands on workability and strength of C30 and C50 concrete are studied. The result shows that C30 and C50 concrete slump can reach 170mm. Concrete workability is good and strength is qualified too. Fineness modulus is the most important performance index when iron mine tailing sand is used in concrete.
34
Araujo, Francisco S. M., Isabella Taborda-Llano, Everton Barbosa Nunes, and Rafael M. Santos. "Recycling and Reuse of Mine Tailings: A Review of Advancements and Their Implications." Geosciences 12, no. 9 (August 27, 2022): 319. http://dx.doi.org/10.3390/geosciences12090319.
Full textAbstract:
Mining is an important industry, accounting for 6.9% of global GDP. However, global development promotes accelerated demand, resulting in the accumulation of hazardous waste in land, sea, and air environments. It reached 7 billion tonnes of mine tailings generated yearly worldwide, and 19 billion solid tailings will be accumulated by 2025. Adding to this, the legacy of environmental damage from abandoned mines is worrying; there are around 10,000 abandoned mines in Canada, 50,000 in Australia, and 6000 in South Africa, as well as 9500 coal mines in China, reaching 15,000 by 2050. In this scenario, restoration techniques from mining tailings have become increasingly discussed among scholars due to their potential to offer benefits towards reducing tailing levels, thereby reducing environmental pressure for the correct management and adding value to previously discarded waste. This review paper explores the available literature on the main techniques of mining tailing recycling and reuse and discusses leading technologies, including the benefits and limitations, as well as emerging prospects. The findings of this review serve as a supporting reference for decision makers concerning the related sustainability issues associated with mining, mineral processing, and solid waste management.
35
Rivera-Santillán, R. E., and V. Becerril-Reyes. "Comparison of the Bioleaching Effect of Mesophilic (35°C) and Thermophilic (45°C) Bacteria on the TIZAPA Tailings." Advanced Materials Research 20-21 (July 2007): 34–37. http://dx.doi.org/10.4028/www.scientific.net/amr.20-21.34.
Full textAbstract:
The exploitation of mineral deposits generates large amounts of wastes such as fine size particles, known as tailings. Mine wastes are characterized by the presence of pyrite, pyrrotite, galene, sphalerite, chalcopyrite and arsenopyrite. One of the most important environmental problems derived from the treatment and disposition of mining tailings is acid mine drainage (AMD) which results from the oxidation of the sulfurous minerals contained in these tailings. The acid generated is produced by a series of complex chemical reactions; the production rate is controlled by leaching microorganisms, which are present mining processes. In this work the bioleaching kinetics of heavy metals such as Cu, Fe, Zn, Cd, Pb, Ni and As, from a Tizapa tailing sample in presence of mesophilic and moderately thermophilic bacteria were studied and compared. The microorganisms used in this work were previously adapted to the tailing sample by the conventional method of successive steps. The percentage of dissolution of heavy metals at 45°C was smaller than at 35°C and the value of parameters such as redox potential and bacterial growth increased with temperature. Bioleaching studies were compared with the corresponding control systems.
36
Choi, Dong Han, Jangyeon Yoo, Wonseok Yang, Jae Hoon Noh, Yeonjung Lee, Kongtae Ra, Kiseong Hyeong, Chan Min Yoo, and Jisoo Park. "Potential Short-Term Effects of Mine Tailings on Phytoplankton Assemblages in the Open Ocean." Journal of Marine Science and Engineering 10, no. 8 (August 22, 2022): 1162. http://dx.doi.org/10.3390/jmse10081162.
Full textAbstract:
The disposal of mine tailings into the marine environment is considered an essential option to secure the economic efficiency of deep-sea mining, but it might adversely affects the ecosystem. To examine the potential impacts of tailing disposal from polymetallic nodules and polymetallic sulfide mines on phytoplankton communities, addition experiments of crushed fine particles into surface seawater were conducted in the open Indian Ocean and changes in chlorophyll a fluorescence and community composition were analyzed. The addition of tailings had serious adverse effects on phytoplankton fluorescence and photosynthetic activity, regardless of mine type. The adverse effects seemed to mainly be due to the physical properties of the mine tailings. These also showed discriminatory effects on phytoplankton, resulting in great changes in community composition. The results suggest that mine tailings could have significant adverse impacts on phytoplankton assemblages, but the degree of impact greatly varies depending on the phytoplankton groups. The discriminatory impacts would cause changes in biomass, community structure, and thus ecological function.
37
Álvarez, María Luisa, Ana Méndez, Roberto Rodríguez-Pacheco, Jorge Paz-Ferreiro, and Gabriel Gascó. "Recovery of Zinc and Copper from Mine Tailings by Acid Leaching Solutions Combined with Carbon-Based Materials." Applied Sciences 11, no. 11 (June 2, 2021): 5166. http://dx.doi.org/10.3390/app11115166.
Full textAbstract:
Mine tailing storage represents an important environmental issue. The generation and dispersal of dust from mine tailings can contaminate air and surrounding soils. In addition, metals and soluble salts present in these wastes could pollute groundwater and surface water. The recovery of metals from mine tailings can contribute to minimize the environmental risk and to achieve a circular economy model. The main objective of the present work is to study the use of two carbon-based materials, a commercial activated carbon (AC) and a commercial charcoal (VC) in the leaching of zinc and copper from low-grade tailing waste. Experimental results obtained show that it is possible to achieve the recovery of more than 87 wt% of Zn after 6 h of leaching with different sulfuric acid solutions. The addition of carbon-based materials increases the extraction of Zn at high sulfuric acid concentrations (1 M) from 89% to 99%. The addition of VC significantly increases the extraction of Cu in leaching solution with high sulfuric acid concentration (1 M), from 41 to 61%. Future research will be necessary to optimize the properties of carbon-based materials and their recovery after leaching experiments in order to assess their potential for industrial application.
38
N̆ancucheo, Ivan, and D. Barrie Johnson. "Significance of Microbial Communities and Interactions in Safeguarding Reactive Mine Tailings by Ecological Engineering." Applied and Environmental Microbiology 77, no. 23 (September 30, 2011): 8201–8. http://dx.doi.org/10.1128/aem.06155-11.
Full textAbstract:
ABSTRACTPyritic mine tailings (mineral waste generated by metal mining) pose significant risk to the environment as point sources of acidic, metal-rich effluents (acid mine drainage [AMD]). While the accelerated oxidative dissolution of pyrite and other sulfide minerals in tailings by acidophilic chemolithotrophic prokaryotes has been widely reported, other acidophiles (heterotrophic bacteria that catalyze the dissimilatory reduction of iron and sulfur) can reverse the reactions involved in AMD genesis, and these have been implicated in the “natural attenuation” of mine waters. We have investigated whether by manipulating microbial communities in tailings (inoculating with iron- and sulfur-reducing acidophilic bacteria and phototrophic acidophilic microalgae) it is possible to mitigate the impact of the acid-generating and metal-mobilizing chemolithotrophic prokaryotes that are indigenous to tailing deposits. Sixty tailings mesocosms were set up, using five different microbial inoculation variants, and analyzed at regular intervals for changes in physicochemical and microbiological parameters for up to 1 year. Differences between treatment protocols were most apparent between tailings that had been inoculated with acidophilic algae in addition to aerobic and anaerobic heterotrophic bacteria and those that had been inoculated with only pyrite-oxidizing chemolithotrophs; these differences included higher pH values, lower redox potentials, and smaller concentrations of soluble copper and zinc. The results suggest that empirical ecological engineering of tailing lagoons to promote the growth and activities of iron- and sulfate-reducing bacteria could minimize their risk of AMD production and that the heterotrophic populations could be sustained by facilitating the growth of microalgae to provide continuous inputs of organic carbon.
39
Moshupya, Paballo M., Seeke C. Mohuba, Tamiru A. Abiye, Ian Korir, Sifiso Nhleko, and Margaret Mkhosi. "In Situ Determination of Radioactivity Levels and Radiological Doses in and around the Gold Mine Tailing Dams, Gauteng Province, South Africa." Minerals 12, no. 10 (October 14, 2022): 1295. http://dx.doi.org/10.3390/min12101295.
Full textAbstract:
The mining and processing of naturally occurring radioactive materials (NORMs) could result in elevated levels of natural radionuclides in the environment. The gold mining in the goldfields of the Witwatersrand Basin of South Africa has resulted in numerous tailing dams that have high concentrations of NORM bearing residue. The aim of this study was to evaluate the radioactivity levels in tailing dams, soils and rocks, and the consequential radiological exposure to the public in the gold mining areas of Gauteng Province, South Africa. The activity concentrations of 238U, 232Th, and 40K were assessed using a gamma ray spectrometer (RS-230), and the activity concentrations ranges in the mine tailings were 209.95–2578.68 Bq/kg, 19.49–108.00 Bq/kg, and 31.30–626.00 Bq/kg, respectively. The radionuclides show significant spatial variability in soils, with high activities recorded in soils located in close proximity to tailings although regionally, the soil radioactivity levels mainly depend on the chemistry of the underlying rocks. The estimated annual effective doses were higher than the recommended regulatory limit of 0.25 mSv/y in particular tailing dams and soil impacted by tailings. Therefore, to ensure the protection of people and the environment, further monitoring and regulatory control measures targeting these areas are required.
40
Zhang, Pengwei, Liming Hu, Hui Wu, and Lin Zhang. "Mechanical characteristics of mine tailings and seismic responds of tailing reservoir." Japanese Geotechnical Society Special Publication 2, no. 76 (2016): 2633–37. http://dx.doi.org/10.3208/jgssp.chn-06.
Full text
41
Manaviparast, Hamid Reza, Tiago Miranda, Eduardo Pereira, and Nuno Cristelo. "A Comprehensive Review on Mine Tailings as a Raw Material in the Alkali Activation Process." Applied Sciences 14, no. 12 (June 12, 2024): 5127. http://dx.doi.org/10.3390/app14125127.
Full textAbstract:
The mining industry generates vast quantities of mine tailings on an annual basis. However, due to their limited economic value, a significant portion of these tailings are deposited close to mining sites, often underwater. The principal environmental apprehensions associated with mine tailings revolve around their elevated levels of heavy metals and sulfidic minerals. The oxidation of these sulfidic minerals can lead to the formation of acid mine drainage, which in turn releases heavy metals into nearby water systems. The effective management of tailing dams requires substantial financial investments for their construction and meticulous control. Consequently, a pressing need exists for stable, sustainable, and economically viable management approaches. One promising method for addressing mine tailings is through alkali activation, a technique that serves as a stabilization process. This approach yields robust, concrete-like structures by utilizing raw materials abundant in aluminum and silicon, which conveniently constitute the primary components of mining residues. This comprehensive review outlines the research on utilizing alkali activation for mine tailings. It delves into the reactivity and chemical attributes of diverse minerals. Numerous mine tailings exhibit an inadequate level of reactivity under alkaline conditions, so various pre-treatment methodologies and their impacts on mineralogy are meticulously explored.
42
Zhu, P., L. Y. Wang, D. Hong, and M. Zhou. "A study of cordierite ceramics synthesis from serpentine tailing and kaolin tailing." Science of Sintering 44, no. 2 (2012): 129–34. http://dx.doi.org/10.2298/sos1202129z.
Full textAbstract:
Cordierite ceramics was synthesized using a composition prepared by the mixture of three different materials: waste serpentine mine tailing (WST), waste kaolin mine tailing (WKT) and alumina. The formation of cordierite was achieved with the solid-state sintering reactions at 1350?C for 3 h. The synthesized cordierite ceramics was characterized by X-ray diffractometer (XRD), thermal analysis (TG-DTA), and SEM-EDS (Scanning Electron Microscopy-Energy Dispersive Spectrometer). The XRD analysis results showed the cordierite with typical rhombic system as a major phase, and its compositions consisted of O, Al, Si and Mg by means of SEM-EDS.
43
Zhang, Zhi-jun, Yao-hui Guo, Ya-kun Tian, Lin Hu, Xi-xian Wang, Huai-miao Zheng, Ling-ling Wu, and Zhengyang Song. "Macroscopic and Mesoscopic Mechanical Properties of Mine Tailings with Different Dry Densities under Different Confining Pressures." Geofluids 2020 (September 29, 2020): 1–12. http://dx.doi.org/10.1155/2020/8832335.
Full textAbstract:
Particle flow numerical simulation software (PFC3D) was utilized to establish the consolidated-undrained triaxial compression test numerical models of mine tailings with different dry densities to deeply investigate the macroscopic and microscopic characteristics of mine tailings in a tailing pond in Hunan Province. Comparing the results of the simulation and the laboratory experiment, the mesoscopic parameters of the particle flow numerical simulation were obtained through continuously adjusting the mesoscopic parameter with the higher degree of agreement between the stress-strain curve, the peak strength, and the elastic modulus as the determining standard. The macroscopic and microscopic characteristics of mine tailings were studied from the perspectives of stress-strain, axial strain-volume strain, coordination number, particle velocity vector, and contact force between particles. After numerous numerical tests, it was found that the PFC3D simulation results are consistent with experiment results of the dry density tailing samples under different confining pressures; compared with the high confining pressure, the simulation test results at lower confining pressures were more with that of the laboratory tests; low density and high confining pressure both have inhibitory effect on the dilatancy characteristics of triaxial samples; with the same confining pressure, the dilatancy tendency of low dry density samples is suppressed comparing with the high dry density samples. The initial coordination number of the numerical model is large, which proves that the contact degree of the model is good to some extent.
44
Grimalt, Joan O., Miguel Ferrer, and Enrique Macpherson. "The mine tailing accident in Aznalcollar." Science of The Total Environment 242, no. 1-3 (December 1999): 3–11. http://dx.doi.org/10.1016/s0048-9697(99)00372-1.
Full text
45
Sahakyan, Kristine, and Arestak Sarukhanyan. "Visual inspection results and evaluation of Akhtala tailing safety based on tailing management facility safety methodology." Bulletin of the Tomsk Polytechnic University Geo Assets Engineering 335, no. 2 (February 28, 2024): 60–68. http://dx.doi.org/10.18799/24131830/2024/2/4034.
Full textAbstract:
Relevance. Mining sector is one of the leading branches of the industry in Armenia. Therefore, effective government regulation of the sector based on a sound legal basis is a necessity. Accidents at tailing management facilities are posing a high risk to people and environment especially in their near vicinity and often have a transboundary impact. The tailing management facility safety methodology elaborated under the auspices of the German Environmental Agency is an efficient tool for quick assessment of the technical condition of the tailing management facilities. Aim. To present the results of application of the tailing management facility methodology in Armenia, which was applied to the operated Nahatak tailing management facility of the Akhtala Ore Dressing Combine (Lori region, Armenia). Objects. Tailing management facility methodology was applied to the operated tailing management facility Nahatak of the Akhtala Ore Dressing Combine, for which all documentation was checked. Enrichment wastes were stored at the tailing management facility during processing copper ore from the Shamlug mine and polymetals from the Akhtala mine. The main visual inspection was carried out in three parts of the tailing management facility: main dam, drainage canal and secondary dam. Special attention was drawn to main dam conditions. The video recorded by a drone was used to explore the dam bottom-line. Methods. The tailing management facility methodology includes the following elements: the method of evaluation of Tailings Hazard Index; the tailing management facility checklists including the questionnaire for visual and documentation inspection, the evaluation matrix for the tailing management facility safety level; the measures catalogue for taking actions to improve tailing management facility safety. The questions of the each tailing management facility checklist are stated in a way to encompass the minimum set of the requirements, critical for tailing management facility safety, which allows evaluating the tailing management facility conditions. Questions in all groups of the checklist are sorted by the tailing management facility lifecycle and each subsection contains relevant questions applied to a specific stage (design, construction, operation, re-cultivation, closure). Application of the tailing management facility checklist is supported by a measures catalogue with short-, medium- and long-term safety measures. Results. The tailing management facility methodology was used/tested for the operated tailing management facility in Armenia for the first time. Тhe main problems of the Nahatak tailing management facility were identified and analyzed, and appropriate recommendations were provided based on them. Based on the obtained results it can be concluded that the main problems are related to the drainage system and the management of water flows, some parts of the primary dam that require restoration, as well as the improvement of monitoring systems. At the same time the experience of application of the tailing management facility methodology in Armenia, allowed improving this methodology and making it the most effective working tool for quick and efficient visual inspection of tailing management facilities and for thorough inspection of relevant documentations. The user-friendly tailing management facility safety methodology (with questionnaires of visual and documentation checking) is an efficient tool for quick assessment of the technical condition of the tailing management facilities, as well as for training staff both in the governance bodies and in mining enterprises.
46
Wang, Yong Yi, and Lin Li. "Environment Pollution and Control Strategy for Exploitation of Asbestos Mine." Advanced Materials Research 726-731 (August 2013): 1845–49. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.1845.
Full textAbstract:
To control environment pollution by exploitation of asbestos mine and forming of tailing pond effectively and provide decision-making basis to competent authorities, the paper analyzed the causes for asbestos powder pollution in course of exploitation of asbestos mine and tailing pond of asbestos through field investigation and research. Slow exploitation and grading process of asbestos mine and shortage of management were the root causes for environment pollution by asbestos, and the tailing pond of asbestos resulted in resources waste and pollution of the atmosphere, water and land. The government should regulate in terms policy, industrial planning etc. offer economic support, change the backward exploitation process, perform comprehensive resources utilization and utilize asbestos properly.
47
Ekyastuti, Wiwik, Dwi Astiani, Emi Roslinda, Hanna Artuti Ekamawanti, and Tri Widiastuti. "Population of Rhizosphere Bacteria on Several Species of Crops In The Tailings of Ex-Gold Mine." IOP Conference Series: Earth and Environmental Science 1153, no. 1 (May 1, 2023): 012024. http://dx.doi.org/10.1088/1755-1315/1153/1/012024.
Full textAbstract:
Abstract Tailings of ex-gold mines leave several environmental damage problems. Environmental damage causes disruption of microorganisms including bacteria. The revegetation of ex-gold mine tailings in Menjalin sub-district, Landak district, West Kalimantan has begun by local communities using agricultural crops. Women as farmers have an important role in the tailing revegetation process using agricultural crops. Therefore, women can help improve the tailings ecosystem as well as the family economy. The objective of the study was to detect the presence and density of bacterial populations in the rhizosphere of the revegetation crops. The research was conducted by survey method. Soil samples were taken compositely from the rhizosphere of four species of agricultural crops cultivated in tailings, i.e: Capsicum frutescens L., Solanum melongena, Ipomoea batatas L., and Manihot utilissima. The results showed that soil bacteria found growing well in the rhizospheres of four species crops. Two genera of bacteria were found in the tailing rhizosphere of ex-gold mine in Menjalin sub-district, namely Azotobacter and Pseudomonas. The bacterial population density in the rhizosphere of M. utilissima was significantly the highest. Meanwhile, the bacterial population density in the rhizosphere of C. frutescens, I. batatas, and S. melongena did not differ in the medium category. Further investigation found that the bacterial population in the rhizosphere of M. utilissima was 126.8 – 217 times denser than the other three crop species.
48
Shi, Chang Jun, Xiao Xin Feng, and Jing Wei Sun. "Investigation on Application of Iron Mine Tailing Sand in Building Mortar." Advanced Materials Research 634-638 (January 2013): 2711–15. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.2711.
Full textAbstract:
The building mortar was prepared with iron mine tailing sand substituted for natural sand, and the effect of tailing sand on the performances of mortar, such as consistency, stratification, density and strength, was investigated. The results show that it is feasible to prepare building mortar with iron mine tailing sand. The sediment percentage in tailing sand has relatively large effect on the fluidity of mortar, and the tailing sand should be washed with water before being used. When the mortar with low W/C ratio is prepared, a proper amount of water-reducing admixture should be used to adjust the stratification of mortar into the right range. The density of the mortar mixture can meet the requirement of the standard in China. The building mortars with different strength grade and different use can be prepared by adjusting the mixture proportion.
49
Dvořák, Karel, and Andrea Jančíková. "Parameters of back filling material prepared from mine tailing, fly ash, and mine water." Acta Polytechnica CTU Proceedings 47 (May 16, 2024): 28–34. http://dx.doi.org/10.14311/app.2024.47.0028.
Full textAbstract:
The article investigates the influence of mine tailing, fly ash, and mine water on strength parameters as mine paste filling material performing the strength tests on different recipes of mortar mixes with individual types of fillers and wastewater from extraction of mine tailings. Recipe is prepared in proportions corresponding to the standard mortar and compared with a reference recipe according to the fresh mortar consistency test using a shaking table according to ČSN EN 1015-3. Resulting measured values on 40 × 40 × 160 mm solids samples for which the evaluation of the volume weight was carried out in the range of 2, 7, 14, 28, 56 and 90 days according to EN 1015-10 (722400). The results showed that that it is possible to prepare relatively fluid mixtures with extremely low binder dosage. And not only the water coefficient but also the granulometry of the raw material plays an important role in the long-term strengths of samples.
50
Putri, Nadia Alifa, Reginawanti Hindersah, and Pujawati Suryatmana. "Effect of cow manure mon the growth of water spinach in gold mine tailing." Current Research in Agricultural Sciences 10, no. 1 (August 4, 2023): 33–40. http://dx.doi.org/10.18488/cras.v10i1.3414.
Full textAbstract:
Gold mining activities produce abundant tailings waste. The negative impacts of tailing pollution on agriculture include soil profile loss, soil compaction, depletion of essential nutrients, organic matter, and soil pH, making it difficult for plants to grow. Cow manure (CM) is a well-known soil amendment to improve soil quality and facilitate root growth. Animal manure fertilizers contain a complete range of macro and micronutrients required by plants. In addition to its ability to enhance soil fertility, CM can also promote plant growth in former mining areas or mineral tailings. The objective of this study was to determine the effect of CM application rates on water spinach plant growth improvement. The experimental design used was a Completely Randomized Block Design (CRBD) with four treatments and six replications. The experimental treatments consisted of a control (without treatment), 10 t ha-1, 20 t ha-1, and 30 t ha-1 of CM. The results of the experiment showed that CM application increased plant height, leaf count, stem diameter, and wet weight of water spinach plants. The application of 10 t ha-1 CM showed the highest growth improvement in terms of plant height, leaf count, stem diameter, and wet weight of plants grown in gold mining tailings compared to other treatments. This experiment highlights the importance of CM for water spinach cultivation in tailing areas.