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Industrial zinc bioleaching

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  • Responses of zinc recovery to temperature and mineral
    Responses of zinc recovery to temperature and mineral

    Temperature and energy resources (e.g., iron, sulfur and organic matter) usually undergo dynamic changes, and play important roles during industrial bioleaching process. Thus, it is essential to investigate their synergistic effects and the changes of their independent effects with simultaneous acti

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  • Solvent Extraction of Zinc from a Bioleaching Solution by
    Solvent Extraction of Zinc from a Bioleaching Solution by

    In this work, zinc extraction from an industrial leach solution was investigated by saponified di(2-ethylhexyl)phosphoric acid (D2EHPA). The solution obtained was from a bioleaching process of a low-grade lead-zinc sulfide ore that contained 50 g/L of zinc and 6.3 g/L of iron. The selective and high Zn(II) extraction yield were obtained by modification of D2EHPA in a proposed two

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  • Bioleaching of Zinc and Aluminium from Industrial Waste
    Bioleaching of Zinc and Aluminium from Industrial Waste

    Acidithiobacillus ferroxidans extracted up to 70% of Zn from Fe-Mn alloy industrial dust by oxidative bioleaching (Solisio et al., 2002). In many instances, mixed consortia of Fe and S

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  • Bioleaching of Zn from sphalerite using Leptospirillum
    Bioleaching of Zn from sphalerite using Leptospirillum

    Aug 09, 2020 Zinc sulphide ores can be treated by bioleaching through direct or indirect mechanism . In the direct bioleaching mechanism, Zn is extracted by direct oxidation of insoluble zinc sulfide to soluble zinc sulfate, which is catalyzed by sulfur-oxidizing bacteria (SOB) such as Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans , as

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  • Bioleaching of zinc and aluminium from industrial waste
    Bioleaching of zinc and aluminium from industrial waste

    Bioleaching of zinc and aluminium from industrial waste sludges The recent explosion in industrialization has resulted in the accumulation of industrial waste (Solisio et.al. 2002). The presence of heavy metals at high concentrations mean that such industrial wastes cannot be disposed haphazardly (Solisio et.al. 2002)

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  • US6103204A - Selective bioleaching of zinc - Google Patents
    US6103204A - Selective bioleaching of zinc - Google Patents

    A method of selectively leaching zinc from a source material containing zinc in sulphide form and iron, comprises the steps of subjecting the source material to bioleaching with a strict sulphur oxidizing micro organism or a mixed culture of sulphur oxidizing and iron oxidizing micro organisms, in the presence of a nutrient solution containing less than about 15 mg/L

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  • Progress in bioleaching: part B: applications of microbial
    Progress in bioleaching: part B: applications of microbial

    Jul 23, 2013 Industrial applications of biohydrometallurgy are conventionally divided into two processes as follows: bioleaching and mineral biooxidation. The former refers to the solubilization of base metals such as zinc, copper, and nickel, whereas mineral biooxidation is the release of precious metals, typically gold and silver, which are occluded, or

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  • Microbes and mineral recovery: Bioleaching of copper
    Microbes and mineral recovery: Bioleaching of copper

    First industrial gold bioleaching plant in 1980 s Nowadays about 40 plants in industrial use for copper, gold, zinc, cobalt, uranium. MICROORGANISMS INVOLVED • Bioleaching can involve numerous ferrous iron and sulfur oxidizing bacteria. Factors affecting bioleaching

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  • (PDF) Bioleaching: A Promising Method of Selective
    (PDF) Bioleaching: A Promising Method of Selective

    Bioleaching: A Promising Method of Selective Leaching of Metals S. Maruthi, S. Swamy, A. Kiran Kumar1,* 1 B. Tech. (3rd year), Dept. of Metallurgical and Materials Engg., RGUKT - Basar, Telangana State 1,* Assistant Professor, Dept. of Metallurgical and Materials Engg., RGUKT - Basar, Telangana State *Corresponding author(s): [email protected] Abstract:

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  • Effect of solid loading on thermophilic bioleaching of
    Effect of solid loading on thermophilic bioleaching of

    Jun 28, 2000 Abdolrahim Foroutan, Siamak Bazpors Ghaziani, Majid Abbas Zadeh Haji Abadi, Saeed Shirazian, Mahdi Ghadiri, Intensification of Zinc Bioleaching from a Zinc–Iron Bearing Ore by Condition Optimization and Adding Catalysts, Transactions of the Indian Institute of Metals, 10.1007/s12666-020-02117-1, (2020)

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  • Bioleaching its technique and applications
    Bioleaching its technique and applications

    May 08, 2017 Copper recovery from mine waters in the Mediterranean area 3000 years ago. The role of bacteria in bioleaching was shown in 1947. In 1950 s copper dump leaching. In 1960 s the first industrial copper heap leaching operation. First industrial gold bioleaching plant in 1980 s Nowadays about 40 plants in industrial use for copper, gold, zinc

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  • Leaching Performance and Zinc Ions Removal from Industrial
    Leaching Performance and Zinc Ions Removal from Industrial

    Nov 16, 2020 This kinetic model showed that the Zn+2 adsorption mechanism of natural and biochar walnut shells is chemical adsorption. With this study, it was shown that a very high 96% zinc removal can be achieved under optimum adsorption conditions. This may be the first study of zinc removal after leaching from industrial slag in the literature

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  • Producing Copper Nature's Way: Bioleaching
    Producing Copper Nature's Way: Bioleaching

    Bioleaching is used today in commercial operations to process ores of copper, nickel, cobalt, zinc and uranium, whereas, biooxidation is used in gold processing and coal desulfurization. Bioleaching involves the use of microorganisms to catalyze the oxidation of iron sulfides to create ferric sulfate and sulfuric acid

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  • Selective bioleaching of zinc - Cominco Ltd
    Selective bioleaching of zinc - Cominco Ltd

    Dec 11, 1997 A method of selectively leaching zinc from a source material containing zinc in sulphide form and iron, comprises the steps of subjecting the source material to bioleaching with a strict sulphur oxidizing micro organism or a mixed culture of sulphur oxidizing and iron oxidizing micro organisms, in the presence of a nutrient solution containing less than about 15 mg/L

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  • Zinc - Essential Chemical Industry
    Zinc - Essential Chemical Industry

    Zinc sulfide also reacts with sulfuric acid under these conditions: As shown in the equation, the process also produces sulfur as the element, and this can be used to make the sulfuric acid required. Bioleaching. Very high zinc extraction rates (up to 99%) from low-grade ores (as low as only 5% zinc) can also be achieved using bacterial action

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  • Bioleaching (Biomining) Advantages, Process & More
    Bioleaching (Biomining) Advantages, Process & More

    Zinc; Nickel; How does the bioleaching process work? There are many types of bioleaching processes, and copper is the most common. A few of the most popular types of bioleaching extract metals from ore by retrieving sulfide minerals using bacteria that receive energy from non-carbon compounds

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  • BGR - Metal Bioleaching (Biomining)
    BGR - Metal Bioleaching (Biomining)

    Today the recovery of copper from sulfide ores is the most important industrial application, and a significant proportion of the world copper production originates from heap or dump bioleaching. Furthermore biomining is applied for the recovery of gold, cobalt, nickel, zinc and uranium

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  • Elevated pH on Bioleaching of Nandan Lead-Zinc Tailings as
    Elevated pH on Bioleaching of Nandan Lead-Zinc Tailings as

    A series of the experiments were carried out on the Nandan lead-zinc tailings management and one bioleaching method was proposed with the purpose of recovering the valuable metal such as Zn. Firstly, multi-elements analysis was performed to provide theoretical data. Secondly, the effect of the pH on the bacterial growth and Fe2+ oxidation was investigated

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  • The Application of Industrial Biotechnology to Pollution
    The Application of Industrial Biotechnology to Pollution

    Industrial and Environmental Section ... zinc sulphide which can then be recycled to the refinery. ... Bioleaching of Copper Ore (Billiton, South Africa) • Copper smelters are generally heavy polluters. • Bacteria can be used in leaching metals from ores. • Can treat low-grade ores or concentrates containing problem elements

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  • Biomining: Theory, Microbes and Industrial Processes
    Biomining: Theory, Microbes and Industrial Processes

    Biomining is the use of microorganisms in the recovery of metals from ores. During bioleaching, metals such as copper, nickel or zinc are oxidized through microbial action from the water-insoluble sulfide to the soluble sulfate forms. Although gold is inert to microbial action, microbes can also be used in gold recovery from certain types of ores because as they oxidize the ore

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  • What is Bioleaching? (with pictures) - Info Bloom
    What is Bioleaching? (with pictures) - Info Bloom

    Other metals that are commonly extracted via bioleaching include silver, zinc, copper, lead and uranium. ... India and in process of setting plant for bio leaching gold ores is 100 TPD. I have already acquired four acres of industrial land and am in the process for clearance for pollution and environment. anon317240 February 1, 2013 . I want to

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  • Bio Hydrometallurgical Technology, Application and Process
    Bio Hydrometallurgical Technology, Application and Process

    Jul 20, 2020 1. Introduction. Bioleaching is the extraction of metals from ores using the principal components water, air and microorganism [].It is the extraction or mobilization of valuable (target) metal from the ore, can also be defined as a process of recovering metals from low grade ore [2, 3], with regard to solubility, bioleaching can be defined as a process of recovering soluble

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  • Tolerance of Chemoorganotrophic Bioleaching Microorganisms
    Tolerance of Chemoorganotrophic Bioleaching Microorganisms

    The bioleaching potential of the bacterium Bacillus mucilaginosus and the fungus Aspergillus niger towards industrial residues was investigated by assessing their response towards various heavy metals (including arsenic, cadmium, cobalt, chromium, nickel, lead, and zinc) and elevated pH. The plate diffusion method was performed for each metal to determine the toxicity effect

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  • Progress, Challenges, and Perspectives of Bioleaching
    Progress, Challenges, and Perspectives of Bioleaching

    industrial scale using bioleaching [12]. For example, approx-imately 20–25% of the world’s total copper are produced using bioleaching [13]. However, biological leaching tech-nology has itslimitations, such as the microbial leaching effi-ciency and reaction cycle. Advances in molecular biology techniques and their

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  • Purification of Zinc from the Bioleaching Solution of a
    Purification of Zinc from the Bioleaching Solution of a

    Nov 23, 2021 There are some examples of the bioleaching and solvent extraction of zinc on the pilot and industrial scales. MIM Holdings in Australia took advantage of Di-(2-ethylhexyl) phosphoric acid diluted by Shellsol 2046 as the organic phase to recover 93% to 96% of zinc from a bioleaching solution containing up to 48% Zn and 11% Pb

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  • Bioleaching of zinc and aluminium from industrial
    Bioleaching of zinc and aluminium from industrial

    Oct 01, 2002 A bioleaching process using a savage microbial strain mainly containing T. ferrooxidans has been employed in the removal of heavy metals present in two different kinds of industrial wastes. At the initial waste concentration 1%, the percentage of removed metals was 76 and 78% for zinc and aluminium, respectively

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  • (PDF) Bioleaching and selective biorecovery of zinc
    (PDF) Bioleaching and selective biorecovery of zinc

    May 20, 2016 Bioleaching and selective biorecovery of zinc from zinc metallurgical leach residues from the Tr s Marias zinc plant (Minas Gerais, Brazil) May 2016 Journal of Chemical Technology & Biotechnology

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  • Bioleaching of Zinc and Aluminium from Industrial
    Bioleaching of Zinc and Aluminium from Industrial

    Acidithiobacillus ferroxidans extracted up to 70% of Zn from Fe-Mn alloy industrial dust by oxidative bioleaching (Solisio et al., 2002). In many instances, mixed consortia of Fe and S

    Read more +
  • Progress, Challenges, and Perspectives of
    Progress, Challenges, and Perspectives of

    May 07, 2021 Therefore, using bioleaching to recover zinc from tailings would solve two problems with one action. The zinc leaching rate was found to increase with an increase in temperature, reaching 96.96% at a temperature of 39.85 C; based on Arrhenius’s law of thermodynamics, the activation energy of the zinc bioleaching reaction was 39.557 kJ/mol

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  • Bioleaching - an overview | ScienceDirect Topics
    Bioleaching - an overview | ScienceDirect Topics

    Bioleaching —a biomining process—uses direct metabolism or byproducts of microbial processes to solubilize a metal sulfidic ore or waste into an aqueous solution, and it is used at commercial scale for the extraction of base metals, for example, copper, tin, or zinc [11, 19]

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  • Progress in bioleaching: part B: applications of
    Progress in bioleaching: part B: applications of

    Jul 23, 2013 The Zijinshan heap bioleach plant demonstrates that high concentrations of ferric ion, low pH values, and elevated temperature facilitate copper leaching even with apparent low bacteria activity. A copper recovery of 80 % is reported at the Zijinshan plant (Ruan et al. 2011 )

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  • Bioleaching: Introduction, Methods, Application
    Bioleaching: Introduction, Methods, Application

    Covellite, chalcocite and chalcopyrite are generally used as copper ores for bioleaching processes. Apart from containing copper, the ores also contain other elements like iron, zinc and sulphur. For example – Chalcopyrite contains 26% copper, 25.9% iron

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  • Growth and survival of Acidithiobacilli in Acidic, metal
    Growth and survival of Acidithiobacilli in Acidic, metal

    Moreover, metal toxicity and resistance mechanisms in acidophiles are of major interest. Thus, zinc toxicity in three model organisms, At. caldus, ... are important for understanding the role of A. ferrooxidans in environmental biogeochemical metal cycling and in industrial bioleaching operations. Place, publisher, year, edition, pages

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