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Artykuły w czasopismach na temat „Bacterial leaching”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 25 lipca 2024

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1

Devasia, Preston, and K. A. Natarajan. "Bacterial leaching." Resonance 9, no. 8 (August 2004): 27–34. http://dx.doi.org/10.1007/bf02837575.

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2

Henry, J. G., D. Prasad, and W. B. Lohaza. "Fate of indicator organisms in sludge during bacterial leaching of metals." Canadian Journal of Civil Engineering 18, no. 2 (April 1, 1991): 237–43. http://dx.doi.org/10.1139/l91-028.

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Biological extraction (bacterial leaching) of heavy metals from digested sewage sludge has been shown to be a practical means for decontaminating sludge for use on agricultural land. However, it was not known whether pathogenic organisms would survive or be destroyed in the acidic environment necessary for the bacterial leaching process. The purpose of the research reported herein was to assess the effect of bacterial leaching on various bacteria commonly used to indicate the possible presence of pathogenic organisms. Although pathogenic viruses, bacteria, protozoa, and helminths may be presen

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3

Gibbs, H. E., M. Errington, and F. D. Pooley. "Economics of Bacterial Leaching." Canadian Metallurgical Quarterly 24, no. 2 (April 1985): 121–25. http://dx.doi.org/10.1179/cmq.1985.24.2.121.

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4

Haddadin, Jamal, Christophe Dagot, and Michel Fick. "Models of bacterial leaching." Enzyme and Microbial Technology 17, no. 4 (April 1995): 290–305. http://dx.doi.org/10.1016/0141-0229(94)00032-8.

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5

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.

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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 bioleach

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6

Rohwerder, Thore, and Wolfgang Sand. "Combined Test for Bioleaching Activities." Advanced Materials Research 20-21 (July 2007): 171. http://dx.doi.org/10.4028/www.scientific.net/amr.20-21.171.

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Both, the employment of leaching bacteria for metal winning as well as the mitigation of bioleaching processes at AMD/ARD sites, require reliable monitoring methods for assessing bacterial activities. Therefore, we have developed a robust and rapid test system combining two sensitive analytical techniques: quantification of heat evolution by microcalorimetry and determination of all relevant inorganic sulfur species by chromatographic methods (IC and HPLC). Generally, only about 1 g of sample is sufficient for a complete analysis. The combined test has been applied to various leaching biotopes

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7

Wang, Xin, Hong Ying Yang, Lin Lin Tong, Zhe Nan Jin, and Su Xing Zhao. "Research on Bio-Leaching of Nickel-Bearing Tailings in Jilin, China." Solid State Phenomena 262 (August 2017): 177–80. http://dx.doi.org/10.4028/www.scientific.net/ssp.262.177.

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Gradually bio-metallurgy technology is becoming an irreplaceable new technology. The nickel-bearing tailings in Jilin, China contains Ni 0.13 %, Cu 0.03%, Co 0.01%, S 15.20%, Fe 6.30%. A comparative study of the HQ0211 bacteria, indigenous bacteria (after the domestication named ZXJE511 bacteria) and acid pool leaching revealed that the local species ore leaching was preferably the best way. At pH 2.0, room temperature (about 23°C), pulp density 20%,the Ni, Co and Cu leaching rates were 70.08%, 40% and 57.67 % , respectively ,after 38 days of bioleaching, proving the superiority of the bacteri

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8

Fečko, Peter, Vojtěch Zechner, Michal Guziurek, Barbora Lyčková, and Eva Pertile. "The Possibilities of Application of Bacterial Leaching in Retrieval of Valuable Metals From Mining Waste." Nova Biotechnologica et Chimica 11, no. 2 (December 1, 2012): 147–52. http://dx.doi.org/10.2478/v10296-012-0017-9.

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Abstract The paper deals with an application of bacterial leaching on two selected samples from old ecological loads situated in the Karlovy Vary Region. To be specific, they are heaps in Prebuz and Kraslice. Bacterial leaching was applied making use of Acidithiobacillus ferrooxidans bacteria and lasted 28 days. The results imply that the given method is suitable for the retrieval of valuable metals from waste and may help to deal with the issue of old heaps and dumps.

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9

NAKAZAWA, Hiroshi, Naofumi KUDO, Hayato SATO, and Ming CHEN. "Bacterial leaching of manganese nodules." Shigen-to-Sozai 105, no. 6 (1989): 470–74. http://dx.doi.org/10.2473/shigentosozai.105.470.

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10

Brierley, C. L. "Bacterial succession in bioheap leaching." Hydrometallurgy 59, no. 2-3 (February 2001): 249–55. http://dx.doi.org/10.1016/s0304-386x(00)00171-7.

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11

Belyi, A. V., P. P. Pustoshilov, Yu L. Gurevich, G. G. Kadochnikova, and V. P. Ladygina. "Bacterial leaching of manganese ores." Applied Biochemistry and Microbiology 42, no. 3 (May 2006): 289–92. http://dx.doi.org/10.1134/s0003683806030124.

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12

Deveci, Nuran, and Cüneyt Göktug Delaloglu. "Sulfate decomposition by bacterial leaching." Applied Biochemistry and Biotechnology 53, no. 1 (April 1995): 75–81. http://dx.doi.org/10.1007/bf02783483.

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13

Demergasso, Cecilia. "Microbial Succession during a Heap Bioleaching Cycle of Low Grade Copper Sulphides. Does this Knowledge Mean a Real Input for Industrial Process Design and Control?" Advanced Materials Research 71-73 (May 2009): 21–27. http://dx.doi.org/10.4028/www.scientific.net/amr.71-73.21.

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The paper “Bacterial succession in bioheap leaching” [1] initiated the search for methods to analyze the microbial dynamics in bioleaching industrial processes as a key to advancing commercial bioheap applications. “Chemical and physical conditions within bioheaps change radically from the time the bioheap is stacked and inoculated until bioleaching is completed.” The results from a comprehensive monitoring program by culturing and molecular techniques in an industrial bioleaching process for Run-of-mine (ROM) low grade copper sulfide ore in Chile will be summarized. The analysis of the compil

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14

Kupka, Daniel, Michal Lovás, and Vladimir Šepelák. "Deferrization of Kaolinic Sand by Iron Oxidizing and Iron Reducing Bacteria." Advanced Materials Research 20-21 (July 2007): 130–33. http://dx.doi.org/10.4028/www.scientific.net/amr.20-21.130.

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Iron oxidizing bacteria Acidithiobacillus ferrooxidans, iron reducing bacteria Acidiphilium spp. and their mixture were applied for leaching of iron impurities from quartz sand. The bacterial leaching was carried out in order to decrease the amount of colouring iron oxides and to improve the technological properties of the raw material. Mineralogical analysis confirmed the presence of siderite, iron-bearing muscovite and various amorphous and crystalline forms of iron oxides occurring both free and coating siderite and quartz particles. Mössbauer spectroscopy revealed various oxidation and mag

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15

Conić, Vesna, Srđan Stanković, Branislav Marković, Dragana Božić, Jovica Stojanović, and Miroslav Sokić. "Investigation of the optimal technology for copper leaching from old flotation tailings of the copper mine bor (Serbia)." Metallurgical and Materials Engineering 26, no. 2 (July 22, 2020): 209–22. http://dx.doi.org/10.30544/514.

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This work aimed to investigate optimal leaching technology for copper extraction from old flotation tailings of the Copper Mine Bor. The leaching degree of copper after leaching with sulphuric acid at 80 °C was 50%, the maximal leaching degree was achieved after 30 minutes. Then, old flotation tailings were leached with adapted moderately thermophilic acidophilic bacteria in a bioreactor at 40 °C. Maximal leaching degree of 84% was achieved after nine days of the experiment. The third leaching experiment was conducted with biogenic lixiviant obtained by bacterial oxidation of the ferrous iron

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16

Luo, Wen Jie, Hong Ying Yang, and Zhe Nan Jin. "Study on the Gold Recovery of Double Refractory Gold Ore Concentrate by Biological Oxidation Pretreatment." Advanced Materials Research 1130 (November 2015): 379–82. http://dx.doi.org/10.4028/www.scientific.net/amr.1130.379.

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In this paper, Bacterial oxidation-cyanide leaching experiments were carried out and the carbonaceous substances composition of carbonaceous gold concentrate was been studied. The elemental composition was 9.73 % iron, 9.66 % sulfur, 4.84 % arsenic and 13.23 % carbon which element carbon and organic carbon was 12.11wt.% and 0.06 wt.% respectively. The main carbonaceous substances were elemental carbon which the morphology was dense and similar to graphite. The removal rates of iron, arsenic and sulfur were achieved to 93.78%, 97.02% and 95.54% respectively by bioleaching, and the gold recovery

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17

CRUNDWELL, F. K. "The Indirect Mechanism of Bacterial Leaching." Mineral Processing and Extractive Metallurgy Review 19, no. 1 (January 1998): 117–28. http://dx.doi.org/10.1080/08827509608962434.

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18

McCready, R. G. L., and Marcos Zentilli. "Beneficiation of Coal by Bacterial Leaching." Canadian Metallurgical Quarterly 24, no. 2 (April 1985): 135–39. http://dx.doi.org/10.1179/cmq.1985.24.2.135.

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19

Srimekanond, Amphan, Vincent J. Thangavelu, and John C. Madgwick. "Thermophilic bacterial leaching of manganese dioxide." Journal of Industrial Microbiology 10, no. 3-4 (September 1992): 217–20. http://dx.doi.org/10.1007/bf01569769.

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20

Liu, Jian-she, Hai-bo Xia, Zhao-hui Wang, and Yue-hua Hu. "Bacterial oxidation activity in heap leaching." Journal of Central South University of Technology 11, no. 4 (December 2004): 375–79. http://dx.doi.org/10.1007/s11771-004-0078-2.

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21

Ke, Jiajun, and Hongmei Li. "Bacterial leaching of nickel-bearing pyrrhotite." Hydrometallurgy 82, no. 3-4 (August 2006): 172–75. http://dx.doi.org/10.1016/j.hydromet.2006.03.011.

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22

Saavedra, Albert, and Eduardo Cortón. "Leaching of Pyrite by Acidithiobacillus ferrooxidans Monitored by Electrochemical Methods." Solid State Phenomena 262 (August 2017): 541–44. http://dx.doi.org/10.4028/www.scientific.net/ssp.262.541.

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The aim of this work was to use electrochemical methods, capable to follow the corrosion of minerals, in order to monitor the progressive attack of the bacteria on the mineral. The assay was performed in a three electrode cell, with pyrite as the working electrode. The tests were performed in the absence and presence of iron; when present it was in low concentration. In order to compare the bacterial attack with other conditions, the study was conducted in three systems: live bacteria in culture media, dead bacteria in culture media, and sterile culture media, used as a control. The initial ba

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23

Jiang, Shuang, Graeme D. Buchan, Mike J. Noonan, Neil Smith, Liping Pang, and Murray Close. "Bacterial leaching from dairy shed effluent applied to a fine sandy loam under irrigated pasture." Soil Research 46, no. 7 (2008): 552. http://dx.doi.org/10.1071/sr07216.

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This experiment investigated bacterial transport from land-applied dairy shed effluent (DSE), via field lysimeter studies, using 2 contrasting irrigation methods. Transient water flow and bacterial transport were studied, and the factors controlling faecal coliform (FC) transport are discussed. Two trials (Trial 1, summer; Trial 2, autumn) were carried out, using 6 undisturbed soil monolith lysimeters, 500 mm diameter by 700 mm deep, with a free-draining, Templeton fine sandy loam. DSE with inert chemical tracers was applied at the start of both trials using the same method, followed with repe

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24

Vereh-Belousova, Ekaterina, and Alina Harlamova. "Environmentally Safe Trends of Coal Mining Waste Usage as Aluminum Technogenic Raw Material." Proceedings of Petersburg Transport University 20, no. 1 (March 20, 2023): 142–50. http://dx.doi.org/10.20295/1815-588x-2023-1-142-150.

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Purpose: Substantiation and development of new environmentally safe trends for utilization of dump rock of Donbass coal mines as technogenic aluminum deposits. To investigate mineralogical and chemical composition of dump rock samples of metamorphism varying degrees in order to substantiate the possibility of their processing as technogenic poor aluminum raw material. To conduct the experiments on chemical and biochemical (bacterial) leaching of fluid (soluble) aluminum compounds from dump rock samples. Methods: Analysis of chemical transformations and technogenic mineralogy in stored dump roc

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25

Fecko, P., Z. Sitavancova, L. Cvesper, and V. Cablik. "Bacterial desulphurization of coal from mine CSA Most." Journal of Mining and Metallurgy, Section B: Metallurgy 42, no. 1 (2006): 13–23. http://dx.doi.org/10.2298/jmmb0601013f.

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The objective of the paper was application of bacterial leaching on 3 brown coal samples from bore S 187 (CV) from locality Mine CSA Most. Based on the results of bacterial leaching and petrologic analyses of the given samples, it is possible to state that the individual samples are very similar, they contain significant shares of clay materials and pyrite is predominantly represented in a framboidal form, which intergrowths into a massive form. Applying bacterial leaching it is possible to remove from 24 to 40% of total sulphur and from 20 to 37% of pyritic sulphur from the coals.

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26

Yang, Hongying, Wenjie Luo, and Ying Gao. "Effect of Acidithiobacillus ferrooxidans on Humic-Acid Passivation Layer on Pyrite Surface." Minerals 8, no. 10 (September 22, 2018): 422. http://dx.doi.org/10.3390/min8100422.

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The effect of Acidithiobacillus ferrooxidans on the humic-acid passivation layer on pyrite surfaces was studied by atomic-force microscopy, leaching experiments, and adsorption experiments. Atomic-force-microscopy results showed that humic-acid was adsorbed onto the pyrite surface. The bacteria grew and reproduced on the humic-acid layer. Leaching experiments showed that the humic-acid passivation layer prevented the oxidation of pyrite by Fe3+ under aseptic conditions. Bacteria destroyed the humic-acid layer, promoted pyrite oxidation, and increased the oxidation of pyrite from 1.64% to 67.9%

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Koizhanova, Aigul, David Magomedov, Nurgali Abdyldayev, Maria Yerdenova, and Akbota Bakrayeva. "The effect of biochemical oxidation on the hydrometallurgical production of copper." Teknomekanik 6, no. 1 (June 1, 2023): 12–20. http://dx.doi.org/10.24036/teknomekanik.v6i1.16072.

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The article presents the results of the use of the biochemical leaching method for copper-bearing non-commercial ore in a full hydrometallurgical cycle. The object of the study was the average copper-bearing ore of the Satbayev deposit, with an initial copper content of 0.26%. The experimental part of the full hydrometallurgical cycle included percolation leaching, extraction, and re-extraction tests, as well as electrodeposition tests and the production of finished cathode copper. Two variants of percolation leaching were performed as a comparison: a standard method using only sulfuric acid a

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28

Fowler, T. A., and F. K. Crundwell. "Leaching of Zinc Sulfide by Thiobacillus ferrooxidans: Experiments with a Controlled Redox Potential Indicate No Direct Bacterial Mechanism." Applied and Environmental Microbiology 64, no. 10 (October 1, 1998): 3570–75. http://dx.doi.org/10.1128/aem.64.10.3570-3575.1998.

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ABSTRACT The role of Thiobacillus ferrooxidans in bacterial leaching of mineral sulfides is controversial. Much of the controversy is due to the fact that the solution conditions, especially the concentrations of ferric and ferrous ions, change during experiments. The role of the bacteria would be more easily discernible if the concentrations of ferric and ferrous ions were maintained at set values throughout the experimental period. In this paper we report results obtained by using the constant redox potential apparatus described previously (P. I. Harvey and F. K. Crundwell, Appl. Environ. Mi

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29

Hung, Nguyen Van. "STUDY ON THE USE OF ACIDOPHILIC IRON OXIDIZING BACTERIA FOR DISSOLVING IRON FROM LOW-GRADED CHALCOPYRITE ORES." Vietnam Journal of Science and Technology 54, no. 4A (March 21, 2018): 164. http://dx.doi.org/10.15625/2525-2518/54/4a/11990.

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Biomining is a microbiological-based approach to extract minerals from ores without adding acids and other extraction chemicals. Having biological nature, the process is considered environmental friendly and tends to be applied more widely nowadays, especially for low-graded ores, for which chemical extraction is no longer efficient. In this study, two iron oxidizing bacterial strains Acidithiobacillus sp. IOB1 and Leptospirillum sp. IOB2 originated from mining sites in Vietnam were used in laboratory leaching experiments for the recovering minerals from low-graded chalcopyrite ores. The obtai

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30

Nakazawa, Hiroshi, and Hayato Sato. "Bacterial leaching of cobalt-rich ferromanganese crusts." International Journal of Mineral Processing 43, no. 3-4 (June 1995): 255–65. http://dx.doi.org/10.1016/0301-7516(95)00005-x.

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SHARMA, VIJAYA LAKSHMI, MALAY CHAUDHURI, and ARUN KUMAR BISWAS. "Bacterial leaching of zinc from flotation tailings." Journal of General and Applied Microbiology 37, no. 1 (1991): 1–8. http://dx.doi.org/10.2323/jgam.37.1.

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Schippers, A., P. Jozsa, and W. Sand. "Sulfur chemistry in bacterial leaching of pyrite." Applied and environmental microbiology 62, no. 9 (1996): 3424–31. http://dx.doi.org/10.1128/aem.62.9.3424-3431.1996.

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Bomberg, Malin, Hanna Miettinen, and Päivi Kinnunen. "The Diverse Indigenous Bacterial Community in the Rudna Mine Does Not Cause Dissolution of Copper from Kupferschiefer in Oxic Conditions." Minerals 12, no. 3 (March 16, 2022): 366. http://dx.doi.org/10.3390/min12030366.

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Blasting and fracking of rock in mines exposes fresh rock surfaces to the local water and microbial communities. This may lead to leaching of metals from the rock by chemical or biological means and can cause acidification of the water system in the mine, i.e., acid rock drainage (ARD). Failure to prevent leakage of metal contaminated mine water may be harmful for the environment, especially to the local groundwater. In the Rudna mine, Poland, an in situ bioleaching pilot test at approximately 1 km depth was performed in the H2020 BIOMOre project (Grant Agreement #642456). After the leaching s

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34

Farrokhian Firouzi, Ahmad, Mehdi Homaee, Erwin Klumpp, Roy Kasteel, and Wolfgang Tappe. "Bacteria transport and retention in intact calcareous soil columns under saturated flow conditions." Journal of Hydrology and Hydromechanics 63, no. 2 (June 1, 2015): 102–9. http://dx.doi.org/10.1515/johh-2015-0020.

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Abstract Study of bacterial transport and retention in soil is important for various environmental applications such as groundwater contamination and bioremediation of soil and water. The main objective of this research was to quantitatively assess bacterial transport and deposition under saturated conditions in calcareous soil. A series of leaching experiments was conducted on two undisturbed soil columns. Breakthrough curves of Pseudomonas fluorescens and Cl were measured. After the leaching experiment, spatial distribution of bacteria retention in the soil columns was determined. The HYDRUS

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35

Wong, L., and J. G. Henry. "Decontaminating Biological Sludge for Agricultural Use." Water Science and Technology 17, no. 4-5 (April 1, 1985): 575–86. http://dx.doi.org/10.2166/wst.1985.0161.

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A biological oxidation process called bacterial leaching was used to remove heavy metals from anaerobically digested sewage sludge. The purpose was to decontaminate the sludge so that it could be utilized on agricultural land. The leaching process was found to be affected by pH, aeration and temperature. At α pH of 4, an aeration rate of 100 cm3 of air per litre of sludge per minute and a temperature of 25°C, the following metal removal efficiencies were observed: cadmium, 80 - 85% ; copper, 66 - 80% ; nickel, 70 - 78% and zinc, 84 - 90%. No significant removal was observed for lead. In additi

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Shooner, Frédéric, and Rajeshwar D. Tyagi. "Microbial ecology of simultaneous thermophilic microbial leaching and digestion of sewage sludge." Canadian Journal of Microbiology 41, no. 12 (December 1, 1995): 1071–80. http://dx.doi.org/10.1139/m95-150.

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The microbial population encountered during a simultaneous thermophilic microbial leaching and digestion process at 50 °C, based on microbial sulfur oxidation, was investigated. The cell count of the sulfuric acid producer Thiobacillus thermosulfatus increased, followed by a decrease. In the absence of sulfur (control: conventional thermophilic digestion), Thiobacillus thermosulfatus population decreased under the detection limit. Acidophilic and neutrophilic heterotrophic populations increased during the leaching process, and the final acidophilic population count was higher than the neutroph

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Belykh, M. P., Sergey V. Petrov, Andrey Yu Chikin, Grigoriy I. Voiloshnikov, and Natalia L. Belkova. "Detoxification of Heap after Gold Leaching Using Biodegradation." Solid State Phenomena 262 (August 2017): 587–90. http://dx.doi.org/10.4028/www.scientific.net/ssp.262.587.

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Bacteria which are adapted both to high content of toxic compounds and to the environments grow in autochthonous communities of gold heap leach (HL) wastes. In the following study of HL waste from a deposit in the Sakha (Yakutia) Republic (Russia) it was shown that microbial processes had a greater impact on the degradation of cyanides and of complex copper and nickel cyanides, respectively, compared to a chemical degradation. The diversity of bacterial communities growing under natural and model conditions was determined.

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38

Tyagi, R. D., J. F. Blais, and J. C. Auclair. "Bacterial leaching of metals from sewage sludge by indigenous iron-oxidizing bacteria." Environmental Pollution 82, no. 1 (1993): 9–12. http://dx.doi.org/10.1016/0269-7491(93)90156-i.

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De Rosa, M., G. Vigliotta, A. Soriente, V. Capaccio, G. Gorrasi, R. Adami, E. Reverchon, M. Mella, and L. Izzo. "“Leaching or not leaching”: an alternative approach to antimicrobial materials via copolymers containing crown ethers as active groups." Biomaterials Science 5, no. 4 (2017): 741–51. http://dx.doi.org/10.1039/c6bm00950f.

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New copolymers containing MMA and 18C6 crown-ether pendants, with or without a PEG arm, were synthesized to check if sequestering structural alkali-earth ions from the bacterial outer membrane (OM) may lead to bacterial death.

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SASAKI, Keiko, Masami TSUNEKAWA, Hidetaka KONNO, Tsuyoshi HIRAJIMA, and Takakatsu TAKAMORI. "Leaching Behavior and Surface Characterization of Pyrite in Bacterial Leaching with Thiobacillus ferrooxidans." Shigen-to-Sozai 109, no. 1 (1993): 29–35. http://dx.doi.org/10.2473/shigentosozai.109.29.

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Gu, G., Li Jun Su, Guan Zhou Qiu, and Y. Hu. "Adhesion of Acidithiobacillus Caldus and Leptospirillum Ferriphilum on Pyrite and their Effect on Surface Properties of Sulfide Minerals." Advanced Materials Research 71-73 (May 2009): 449–52. http://dx.doi.org/10.4028/www.scientific.net/amr.71-73.449.

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Acidithiobacillus caldus and Leptospirillum ferriphilum cells grown in different energy substances (ferrous ion, sulfur and pyrite) were used. The adhesion of A. caldus and L. ferriphilum cells on pyrite and their effect on pyrite surface properties were studied by adsorption, zeta-potential and FT-IR methods, and the corrosion images of pyrite interaction with bacteria were examined using atomic force microscopy. Research showed that pyrite isoelectric point (IEP) after interaction with bacterial cells shifted towards cells isoelectric point, and the shift degree in case of interaction with A

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Muñoz, Alexa, Denise Bevilaqua, and Oswaldo Garcia Jr. "Leaching of Ni and Cu from Mine Wastes (Tailings and Slags) Using Acid Solutions and A. Ferrooxidans." Advanced Materials Research 71-73 (May 2009): 425–28. http://dx.doi.org/10.4028/www.scientific.net/amr.71-73.425.

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The objective of this work is to evaluate the acidic and biological leaching of tailings containing Ni/Cu from a flotation and smelting plant. Acidithiobacillus ferrooxidans, strain LR, was used for bioleaching at pH 1.8 and chemical controls were run parallel to that. The acidic leaching was done within 48 hours at pH 0.5 and 1.0. In the slag inoculated flasks the redox potential was high (600 mV), thus indicating oxidative bacterial activity, however, the obtained results after 15 days showed only around 13% Ni and 8% Cu extractions, which were not different to those of the controls. For the

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Jiang, Guangming, Mike J. Noonan, Graeme D. Buchan, and Neil Smith. "Transport and deposition of Bacillus subtilis through an intact soil column." Soil Research 43, no. 6 (2005): 695. http://dx.doi.org/10.1071/sr04140.

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Bacterial transport in unsaturated soils is much less well understood than in saturated conditions, especially for intact soils. This paper aims to investigate the fate and transport of bacteria in intact soils with different water saturations, and particularly the effect of low suction (and hence removal of water flow in the largest macropores). An intact soil column (0.50 m diameter by 0.70 m depth) with a tension infiltrometer was used to investigate the transport and deposition of Bacillus subtilis endospores (i.e. dormant and persistent bacteria) during saturated and unsaturated flows. So

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Li, Zhongliu, Nianze Wu, Yuying Song, and Junchen Xiang. "Investigating the Potential of Biobinder for Bottom Ash Solidification/Stabilization: Leaching Behaviour and pH Dependence." Sustainability 15, no. 10 (May 11, 2023): 7859. http://dx.doi.org/10.3390/su15107859.

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Nowadays, a large amount of municipal solid waste incineration bottom ash (IBA) is produced from waste incineration plants; therefore, it is still a challenge for IBA management. To investigate the potential of microbially-induced carbonate precipitation (MICP) for IBA treatment, a harmless biobinder was prepared by using biosolutions with different bacterial concentrations. A series of tests were carried out on the sample of the IBA treated with different biosolutions, such as leaching behavior, sequential extraction, pH dependence, pore distribution, and microscopic morphology. The results s

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Lan, Zhuo Yue, Di Fei Li, and Qi Fu Zhang. "Electrochemical Study on the Bioleaching of Marmatite." Advanced Materials Research 774-776 (September 2013): 512–18. http://dx.doi.org/10.4028/www.scientific.net/amr.774-776.512.

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Shaking-flask experiments and electrochemical tests were conducted to study the bioleaching of marmatite with mixed cultures of mesophilic bacteria. The effects of copper ions and the surfactant, o-phenylenediamines (OPD) on the bioleaching were investigated. The electrochemical mechanism of the bioleaching was researched through cyclic voltammetry and chronoamperometry. The results show that the decrease in leaching rate was associated with a passive film (elemental sulfur) formed on the surface of marmatite in the leaching course. It was found that, however, the passive film dissolved readil

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Iodis, V. A. "Apparatus for bacterial-chemical leaching of sulfide ore." Mining informational and analytical bulletin, S46 (2020): 128–38. http://dx.doi.org/10.25018/0236-1493-2020-12-46-128-138.

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Zhappar, Nariman, Oleg Ten, Darkhan Balpanov, Rakhmetulla Erkasov, and Abdigali Bakibayev. "PERCOLATION BACTERIAL LEACHING OF LOW-GRADE COPPER ORE." Kompleksnoe ispolʹzovanie mineralʹnogo syrʹâ/Complex Use of Mineral Resources/Mineraldik shikisattardy Keshendi Paidalanu 306, no. 3 (August 15, 2018): 30–37. http://dx.doi.org/10.31643/2018/6445.14.

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Roy Chaudhury, G., L. B. Sukla, and R. P. Das. "Utilisation of low-grade pyrites through bacterial leaching." International Journal of Mineral Processing 26, no. 3-4 (July 1989): 275–84. http://dx.doi.org/10.1016/0301-7516(89)90033-1.

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Couillard, D., M. Chartier, and G. Mercier. "Bacterial leaching of heavy metals from aerobic sludge." Bioresource Technology 36, no. 3 (January 1991): 293–302. http://dx.doi.org/10.1016/0960-8524(91)90236-d.

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Krafft, Christopher, and Roll O. Hallberg. "Bacterial leaching of two Swedish zinc sulfide ores." FEMS Microbiology Reviews 11, no. 1-3 (July 1993): 121–27. http://dx.doi.org/10.1111/j.1574-6976.1993.tb00275.x.

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