Bibliografías temáticas / Leaching

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Literatura académica sobre el tema "Leaching"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 25 de julio de 2025

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Artículos de revistas sobre el tema "Leaching"

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Chang, Siu Hua, and Siti Fatimah Abdul Halim. "Recovery of Precious Metals from Discarded Mobile Phones by Thiourea Leaching." Materials Science Forum 962 (July 2019): 112–16. http://dx.doi.org/10.4028/www.scientific.net/msf.962.112.

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The objective of this work was to recover gold and silver from the printed circuit board (PCB) of discarded mobile phones by thiourea leaching. Effects of thiourea concentration, leaching temperature, leaching time, and ferric ion (Fe3+) concentration on the recovery of gold and silver were investigated. The PCB was pretreated physically to reduce the thiourea consumption and enhance the leaching process. It was found that the percentage of gold leaching was higher than that of silver at different conditions studied. The highest percentages of gold (96%) and silver (90%) leachings were achieve
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B., Manoj, Kunjomana A. G., and Mansoor Ahmad. "Effect of Leaching High Ash Coal by Hydrofluoric Acid and EDTA on Removal of Mineral Matter and Sulphur." Mapana - Journal of Sciences 8, no. 2 (2009): 29–37. http://dx.doi.org/10.12723/mjs.15.4.

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Demineralization of coal was carried out using EDTA and HF. The residual coal from each treatment was characterized together with virgin coal using Scanning Electron Microscopy and energy dispersive X-ray analysis (EDAX). An elemental analyzer was adopted to analyze CHNS on virgin and residual coal sample. The current research compares the leaching efficiency of a mild leachant and a strong leachant. The final analysis showed that the coal under study was subbituminous coal and leaching could improve the amount of carbonaceous material. It was observed that with HF leaching aluminates silicate
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Kosanlavit, Waraporn, and Napat Noinumsai. "Effects of Nanoscale Zero-Valent Iron on Soil-Leaching of Trinitrotoluene Contaminated Soil in Acid Rain Conditions." Key Engineering Materials 907 (January 21, 2022): 66–73. http://dx.doi.org/10.4028/www.scientific.net/kem.907.66.

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The study of effects of nanoscale zero-valent iron (nZVI) on soil-leaching of trinitrotoluene (TNT) contaminated soil in the acid rain conditions is aim to the determination of the effect of nZVI which used as treatment material on soil leaching of TNT contaminated soil in raining condition. Research methodology, soil leaching batch reactor was designed for TNT remediation in soil with nZVI. The reactor was divided into three compartments for the different series of the experiment. Three compartments of the experiments were used for 1) TNT-contaminated soil column (without leaching), 2) TNT-co
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Park, Yujin, Yuik Eom, Kyoungkeun Yoo, and Manis Kumar Jha. "Leaching of Copper from Waste-Printed Circuit Boards (PCBs) in Sulfate Medium Using Cupric Ion and Oxygen." Metals 11, no. 9 (2021): 1369. http://dx.doi.org/10.3390/met11091369.

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In the present paper, the leaching of copper from printed circuit boards (PCBs) using sulfuric acid with Cu2+ and O2 is proposed. The effects of various process parameters such as agitation speed, temperature, the type and the flow rate of gas, initial Cu2+ concentration, and pulp density were investigated to examine the dissolution behavior of Cu from PCBs in 1 mol/L sulfuric acid. The kinetic studies were performed using the obtained leaching data. The leaching rate of Cu from PCBs was found to be higher on addition of Cu2+ and O2 to the leachant in comparison with the addition of O2 or both
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Sahu, Sibananda, Subhankar Pati, and Niharbala Devi. "A Detailed Kinetic Analysis of the Environmentally Friendly Leaching of Spent Lithium-Ion Batteries Using Monocarboxylic Acid." Metals 13, no. 5 (2023): 947. http://dx.doi.org/10.3390/met13050947.

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It is essential to develop a leaching procedure that uses minimal acid consumption, is economical, recovers large amounts of metal, and has a minimal negative impact on the environment. In this paper, a viable hydrometallurgical method using acetic acid as a leachant is suggested for recovering critical metals from waste LCO-type batteries. Several leaching parameters were examined in order to optimize the leaching conditions. With 1.2 mol/L acetic acid, 7% H2O2, 90 °C, an S/L ratio of 10 g/L, and a 60 min leaching period, the maximum leaching efficiencies of Li (99.6%) and Co (95.6%) were att
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Zha, Fusheng, Congmin Liu, Bo Kang, et al. "Effect of Carbonation on the Leachability of Solidified/Stabilized Lead-Contaminated Expansive Soil." Advances in Civil Engineering 2021 (February 11, 2021): 1–13. http://dx.doi.org/10.1155/2021/8880818.

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Lime, fly ash, and alkaline residue are used widely as effective binders to solidify/stabilize heavy metal-contaminated expansive soil. Carbonation, however, may influence the effectiveness of solidification/stabilization (S/S) by decomposing hydration products and decreasing pH, which would seriously damage the long-term durability of stabilized soils. This study focused on the variation of leaching characteristics of solidified/stabilized lead-contaminated expansive soils before and after accelerated carbonation under the leachant of pH 3 and 5 by the semidynamic leaching test. After semidyn
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Mohd Rozali, Mohd Fasyraf Hafizi, Nurulfazielah Nasir, Suhaina Ismail, and Norazharuddin Shah Abdullah. "Preliminary Studies on Acid Leaching of Finely-Ground Malaysian Low Grade Manganese Ore (LGMO)." Materials Science Forum 840 (January 2016): 364–68. http://dx.doi.org/10.4028/www.scientific.net/msf.840.364.

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Ore samples, believed to be low grade manganese ore were characterized using XRD, XRF and SEM, before being ground further into very fine particle sizes going through a preliminary leaching process. Sulfuric acid was chosen as the leachant, and leaching was done without any presence of reducing agents.
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Munir, Badrul, Sulaksana Permana, Anggita Amilia, Ahmad Maksum, and Johny W. Soedarsono. "Initial Study for Cerium and Lanthanum Extraction from Bangka Tin Slag through NaOH and HClO4 Leaching." MATEC Web of Conferences 269 (2019): 07003. http://dx.doi.org/10.1051/matecconf/201926907003.

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The global demand for rare earth elements have increased dramatically for the last decade as more and more devices use rare earth elements as key for their advanced properties. The paper explores the possibilty to recover cerium (Ce) and lanthanum (La) in Bangka tin slag (BTS) involving roasting at 900°C, water-quenching, and two leachings, 8M NaOH leaching and HClO4 leaching at concentrations of 0.1M, 0.4M, and 0.8M. HClO4 leaching causes Ce and La contents to decrease to 0.47% for 0.1M, 0.51% for 0.4M, and 0.59% for 0.8M. On the other hand, 8M NaOH optimizes cerium and lanthanum contents up
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Keel, Kevin R., Charles H. Gilliam, Glenn R. Wehtje, Tim L. Grey, Gary J. Keever, and Donald J. Eakes. "Herbicide Adsorption and Release Properties of Five Oxadiazon-Coated Fertilizers." Journal of Environmental Horticulture 16, no. 4 (1998): 230–34. http://dx.doi.org/10.24266/0738-2898-16.4.230.

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Abstract Laboratory experiments were conducted to determine the release of oxadiazon coated on control-release fertilizers. Five fertilizers and glass beads (nonabsorbent control) were coated with 14C-oxadiazon + formulated oxadiazon at a herbicide-to-fertilizer concentration of 0.3 mg ai/g. Coated fertilizers were subjected to 14 consecutive daily water leaching events. For the control-release fertilizers, Nutricote, Meister and Osmocote, 70%–80% of the coated oxadiazon was released in the first 3 leaching events; each leaching event after the 7th leaching event contained less than 1% of tota
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Ma, Guo Jun, Hui Tang, and Yi Biao Jin. "Mineral Sequestration of CO2 Using Basic Oxygen Furnace (BOF) Steelmaking Slag." Advanced Materials Research 194-196 (February 2011): 2140–44. http://dx.doi.org/10.4028/www.scientific.net/amr.194-196.2140.

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A promising option for long-term storage of CO2 is to fix CO2 by industrial solid wastes, such as basic oxygen furnace (BOF) steelmaking slag. It is advantage to use BOF steelmaking slag to fix CO2, such as large volume of BOF steelmaking slag, low price of raw materials, close to the CO2 emission sources, and no secondary pollution. It is of great significance to the CO2 emissions reduction and solid waste disposal in the ironmaking and steelmaking plant. In this paper, the leaching process, impurities removing and carbonation of steelmaking plant waste slag were studied at ambient pressure.
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Tesis sobre el tema "Leaching"

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Ekström, Tomas. "Leaching of concrete : the leaching process and its effects /." Lund : Univ, 2003. http://www.byggnadsmaterial.lth.se/.

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Barbosa, Filho Olavo. "Thiocyanate leaching of gold." Thesis, Imperial College London, 1991. http://hdl.handle.net/10044/1/46663.

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Trejo-Gallardo, Jaime. "Modeling chalcopyrite leaching kinetics." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/240.

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Chalcopyrite (CuFeS2) is the most abundant of the copper sulfides and also one of the most refractory for leaching. Several processing routes have been proposed to overcome drawbacks associated with environmental problems related to copper extraction from this mineral. Atmospheric leaching in acidic ferric sulfate is regarded as being particularly attractive over other hydrometallurgical systems. However, the challenge has been to overcome the problem of slow extraction rates due to passivity encountered at high solution potentials in this system. This highlights the need to investigate better
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Munkondya, Ferguson Mukozoke. "Kinetic modelling of leaching." Thesis, Imperial College London, 1989. http://hdl.handle.net/10044/1/47583.

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Sililo, Bernard Liswani. "Modelling uranium leaching kinetics." Diss., University of Pretoria, 2016. http://hdl.handle.net/2263/61336.

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The uranium price decline has negatively impacted on the uranium mining industry. This decline in price requires that uranium metallurgical processes be made to operate more efficiently. Some key parameters that influence the dissolution and kinetics of leaching uraninite (one of the main minerals from which uranium can be extracted) are pH, oxidationreduction potential and iron concentration. A good understanding of the effect these parameters have on the leach kinetics would lead to an efficient operation of metallurgical processes. The objective of this work was therefore to investiga
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Watson, Jack. "Leaching for Maintenance: Factors to Consider for Determining the Leaching Requirement for Crops (AZ." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 1999. http://hdl.handle.net/10150/146964.

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3 pp.<br>As a result of the application of irrigation water containing soluble salts, a salt load is continually added to the soil. Soil salts have to be removed on an ongoing basis through maintenance leaching to prevent yield losses from a salinity buildup. This publication provides factors to consider for determining the leaching requirement for crops.
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Tavakolikhaledi, Mohammadreza. "Vanadium : leaching and solvent extraction." Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/46814.

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The fundamental understanding of vanadium hydrometallurgy was developed in three phases: vanadium (V) leaching, vanadium (III) oxidative leaching, and solvent extraction of vanadium (V&IV). In the first section, V₂O₅ leaching was studied in three steps. First, vanadium leaching and solubility of VO₂⁺ at different pH’s and temperatures were investigated in sulfuric acid. Secondly, the kinetics of vanadium leaching in pH 5 and pH 8 solutions, and the reductive leaching of vanadium pentoxide using sodium sulfite were studied. It was shown that the kinetics of acid leaching is rapid but suffers f
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Hill, Annette Rosemary. "Leaching of alternative pavement materials." Thesis, University of Nottingham, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.410354.

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Dubus, Igor G. "Calibration of pesticide leaching models." Thesis, Cranfield University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269528.

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May, Noelene. "The ferric leaching of pyrite." Master's thesis, University of Cape Town, 1997. http://hdl.handle.net/11427/17952.

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Bibliography: pages 82-90.<br>The bioleaching of pyrite has been found to occur via an indirect mechanism. Ferric iron leaches the pyrite, and is reduced to ferrous iron. Bacteria such as Thiobacillus ferrooxidans oxidise the ferrous iron to ferric iron, thus maintaining a high redox potential. In this thesis, the effect of the redox potential on the ferric leach rate was investigated by examining previously published data and by developing an experimental technique where dynamic redox potential measurements were used to study the kinetics of the sub-process. The ferric leach rate of pyrite wa
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Libros sobre el tema "Leaching"

1

Liddicoat, Jenni Anne. Chloride leaching for chalcopyrite. University of British Columbia, 2003.

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2

Engineering, Gormely Process, Northern Affairs Program (Canada). Northern Environment Directorate., and Canada. Indian and Northern Affairs Canada., eds. Heap leaching literature review. Indian and Northern Affairs Canada, 1987.

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Dorey, Robert. Overview of heap leaching technology. Society of Mining Engineers, Inc, 1988.

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H. A. van der Sloot. Harmonization of leaching/extraction tests. Elsevier, 1997.

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(Canada), Wastewater Technology Centre, ed. Compendium of waste leaching tests. Environment Canada, 1990.

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Mackie, D. A. The Mackie vat leaching jig. Minerals, Metals and Materials Society, 1990.

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1958-, Sandoval S. P., Bush R. P, and United States. Bureau of Mines, eds. Effect of additives on chalcopyrite leaching. U.S. Dept. of the Interior, Bureau of Mines, 1995.

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Lin, H. K. Ferric chloride leaching of the Delta sulfide ores and gold extraction from the leaching residue. Mineral Industry Research Laboratory, University of Alaska, 1988.

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Dixon, David G. Hydrometallurgical reactor design and analysis: A short course presented to supporters of the Industrial Research Chair in Hydrometallurgy. Centre for Metallurgical and Process Engineering, 1995.

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Sasidharan, N. Sathi. SLAG cement matrix for spent cationic resins arising from nuclear power plants. Bhabha Atomic Research Centre, 2005.

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Capítulos de libros sobre el tema "Leaching"

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Miller, Laura T., Lionel Stange, Charles MacVean, et al. "Leaching." In Encyclopedia of Entomology. Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6359-6_1979.

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Roshchina, Victoria V., and Valentina D. Roshchina. "Leaching." In The Excretory Function of Higher Plants. Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-78130-8_6.

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Gooch, Jan W. "Leaching." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_6825.

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Bärlocher, Felix. "Leaching." In Methods to Study Litter Decomposition. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-30515-4_5.

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Reichenau, Tim G., Christian W. Klar, Victoria I. S. Lenz-Wiedemann, Peter Fiener, and Karl Schneider. "Nitrate Leaching." In Regional Assessment of Global Change Impacts. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-16751-0_38.

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Gooch, Jan W. "Leaching Rate." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_6826.

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Lapidus, Gretchen T. "Selective Leaching." In Sustainability in the Mineral and Energy Sectors. CRC Press, 2016. http://dx.doi.org/10.1201/9781315369853-9.

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Calgaro, Camila Ottonelli, Eduardo Hiromitsu Tanabe, Daniel Assumpção Bertuol, Flávia Paulucci Cianga Silvas, Denise Crocce Romano Espinosa, and Jorge Alberto Soares Tenório. "Leaching Processes." In Electronic Waste. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15714-6_5.

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Gupta, Raj K., and I. P. Abrol. "Salt Leaching." In Encyclopedia of Soil Science. Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-3995-9_498.

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Chakraborty, Akshoy Kumar. "NAOH Leaching Study." In Phase Transformation of Kaolinite Clay. Springer India, 2013. http://dx.doi.org/10.1007/978-81-322-1154-9_17.

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Actas de conferencias sobre el tema "Leaching"

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Sufriadin, Sufriadin, Malyanus Yepta, and Akmal Saputno. "The Effect of Pre-Roasting on the Atmospheric HCl and HNO<sub>3</sub> Leaching of Ni, Co, and Fe from Sorowako Limonite Ore, Sulawesi, Indonesia." In International Conference on Research in Engineering and Science Technology (IC-REST) 2023. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-kj5tns.

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An atmospheric leaching of a limonite ore from Soroako, Sulawesi, Indonesia, has been performed using hydrochloric acid (HCl) and nitric acid HNO3 solutions. The study's objectives are to determine the effect of pre-roasting the laterite ore sample on the dissolution behavior and to compare the leaching efficiency of metals (Ni, Co, and Fe) from limonite under HCl and HNO3 lixiviants. The sample was characterized using optical microscopic, X-ray diffraction (XRD), X-ray fluorescence (XRF), and atomic absorption spectrometry (AAS) methods. Heating the ore at 300 °C has transformed goethite into
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Lamb, S., and M. J. Thayer. "Materials for the Hydrometallurgical Industry." In CORROSION 2001. NACE International, 2001. https://doi.org/10.5006/c2001-01346.

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Abstract High pressure acid leaching (HPAL) has been used for the extraction of basic metals, the latest developments being found for the nickel lateritic ores in Australia and South East Asia. This process involves autoclave leaching of minerals, solvent extraction and electrolytic recovery. The process conditions have become increasingly demanding, both in temperature and pressure. Sulfuric acid is the basic leaching medium and these operating conditions have pushed the operating envelope for some of the more traditional materials, resulting in the use of more exotic titanium, Titanium-Niobi
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Paige, Jack I., and Bernard S. Covino. "Leachability of Lead from Selected Copper-Base Alloys Used by the Plumbing Industry." In CORROSION 1992. NACE International, 1992. https://doi.org/10.5006/c1992-92438.

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Abstract The Bureau of Mines has conducted research on the selective leaching of lead from copper-base alloys in high purity water. Lead leached from these alloys can cause serious health problems when ingested. The alloys in this study were selected as being representative of those used in various plumbing system fixtures such as faucets and valves. Leaching tests were conducted for a total period of 14 days and at temperatures of 25°C, 50°C, and 75°C. An acetic acid pretreatment was used in an effort to reduce the amount of lead that was leached from the alloys. The results show that, with t
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Krumins, Valdis, Lawrence Koss, Mary Hummerick, and Richard Strayer. "Continuous Leaching (Bio)reactor." In International Conference On Environmental Systems. SAE International, 2002. http://dx.doi.org/10.4271/2002-01-2350.

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Xuan Phuc, Nguyen. "Leaching of Lead (Pb) in Abandoned Mine Soil in Column Leaching Experiment." In Proceedings of the 18th International Conference on Heavy Metals in the Environment. openjournals ugent, 2016. http://dx.doi.org/10.21825/ichmet.71068.

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Xie, Hong-Yan, Hui Lu, and Ji-Kun Wang. "KINETICS OF MANGANESE LEACHING DURING PRESSURE ACID LEACHING OF LOW GRADE MANGANESE ORES." In 2015 International Conference on Energy and Mechanical Engineering. WORLD SCIENTIFIC, 2016. http://dx.doi.org/10.1142/9789814749503_0044.

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Amaya, T., A. Mukunoki, M. Shibuya, and Hiroshi Kodama. "Leaching of Iodide Ion From BiPbO2I Under Reducing Conditions." In ASME 2001 8th International Conference on Radioactive Waste Management and Environmental Remediation. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/icem2001-1299.

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Abstract Radioactive wastes containing Iodine-129 are to be disposed of in Japan in an underground facility together with TRU wastes. Iodine-129 has a long half-life (1.6 × 107 y) and it is strongly adsorbed in the thyroid gland when it intrudes into the human body. The main chemical formulae of iodine in an alkaline solution are I− and IO3−, and these anion species are absorbed only to a very small extent on silicate minerals. Iodine-129, therefore, is one of the key nuclides to be studied in the geological disposal of radioactive wastes. Recently, a new inorganic ion-exchanger, BiPbO2NO3, ha
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Ivanka Anguelova and Gueorgui Anguelov. "Zinc Leaching Potential in Pastureland." In 2005 Tampa, FL July 17-20, 2005. American Society of Agricultural and Biological Engineers, 2005. http://dx.doi.org/10.13031/2013.18947.

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Aleksei, Kritskii, Karimov Kirill, and Naboichenko Stanislav. "Pressure leaching of chalcopyrite concentrate." In PROCEEDINGS OF THE INTERNATIONAL SEMINAR ON METALLURGY AND MATERIALS (ISMM2017): Metallurgy and Advanced Material Technology for Sustainable Development. Author(s), 2018. http://dx.doi.org/10.1063/1.5038330.

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Kolupaeva, V. N., A. A. Belik, and A. A. Kokoreva. "Lysimeter Leaching Study of Cyantraniliprole." In The 3rd World Congress on Civil, Structural, and Environmental Engineering. Avestia Publishing, 2018. http://dx.doi.org/10.11159/awspt18.133.

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Informes sobre el tema "Leaching"

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Skone, Timothy J. Rare earth leaching. Office of Scientific and Technical Information (OSTI), 2014. http://dx.doi.org/10.2172/1509116.

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Baker, S., J. Bull, and D. Goss. Leaching of accelerator-produced radionuclides. Office of Scientific and Technical Information (OSTI), 1994. http://dx.doi.org/10.2172/10149440.

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Waganet, R. J., John Duxbury, Uri Mingelgrin, John Hutson, and Zev Gerstl. Consequences of Nonequilibrium Pesticide Fate Processes on Probability of Leaching from Agricultural Lands. United States Department of Agriculture, 1994. http://dx.doi.org/10.32747/1994.7568769.bard.

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Pesticide leaching in heterogeneous field soils is relatively unstudied and is the focus of this project. A wide variety of heterogeneous soils exist, characterized by processes that result from the presence of structural cracks, worm holes, and other preferred pathways within which the majority of transport can occur (called physical non-equilibrium processes), along with the presence of sorption processes that are both equilibrium and kinetic (chemical non-equilibrium processes). Previous studies of pesticide leaching have focused primarily on relatively homogeneous soils, which are less wid
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McCabe, D., J. Jeff Pike, and B. Bill Wilmarth. ALUMINUM AND CHROMIUM LEACHING WORKSHOP WHITEPAPER. Office of Scientific and Technical Information (OSTI), 2007. http://dx.doi.org/10.2172/909349.

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Travis, B. A Simulator for Copper Ore Leaching. Office of Scientific and Technical Information (OSTI), 1999. http://dx.doi.org/10.2172/763213.

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Kosiewicz, S. T., and R. C. Heaton. Leaching behavior of particulate plutonium oxide. Office of Scientific and Technical Information (OSTI), 1985. http://dx.doi.org/10.2172/5412830.

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Chojnicki, Kirsten, Raquel Valdez, and David Hart. Cavern Leaching Monitoring CY18 And CY19. Office of Scientific and Technical Information (OSTI), 2021. http://dx.doi.org/10.2172/1775194.

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Wronkiewicz, D. J., J. K. Bates, T. J. Gerding, E. Veleckis, and B. S. Tani. Leaching patterns and secondary phase formation during unsaturated leaching of UO{sub 2} at 90{degrees}C. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/140730.

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Delegard, C. H., and D. E. Rinehart. Radionuclide Leaching from Organic Ion Exchange Resin. Office of Scientific and Technical Information (OSTI), 1999. http://dx.doi.org/10.2172/5106.

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Fuhrmann, M., R. F. Pietrzak, E. M. Franz, J. H. III Heiser, and P. Colombo. Optimization of the factors that accelerate leaching. Office of Scientific and Technical Information (OSTI), 1989. http://dx.doi.org/10.2172/5624066.

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