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bioleaching of copper converter slag using aspergillus

Vanadium removal from LD converter slag using bacteria

The bioleaching process was carried o Removal of vanadium from Linz-Donawits (LD) converter slag was investigated by means of three different species of microbial systems: Acidithiobacillus thiooxidans (autotrophic bacteria), Pseudomonas putida (heterotrophic bacteria) and Aspergillus niger (fungi).

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Vanadium removal from LD converter slag using bacteria

2015-2-16  Vanadium removal from LD converter slag using bacteria and fungi. ... Pseudomonas putida (heterotrophic bacteria) and Aspergillus niger (fungi). The bioleaching process was carried out in both one-step and two-step process and the leaching efficiencies in both cases were compared. Formation of inorganic and organic acids during the leaching ...

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Processing of Waste Copper Converter Slag Using Organic ...

An innovative, economical, and environmentally sound hydrometallurgical process has been proposed for recovering Cu, Ni, and Co from copper-rich converter slag by organic acids. In the leaching experiments, the effects of organic acid concentrations, pulp density, temperature, and time were investigated. Optimum recovery of 99.1% Cu, 89.2% Ni, 94% Co, and 99.2% Fe was achieved in 9ndash;10 h ...

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Recovery of Cu and Sn from the Bioleaching Solution of ...

2006-12-27  A study for recovering of copper and lead from electronic scraps has been carried out using a combination of bioleaching and solvent extraction. It was found that the citric acid generated by Aspergillus niger could be an imporant leaching agent acting in the solubilization of copper, iron, lead and tin from the electronic scrap.

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Biorecovery of copper from converter slags: Slags ...

Abstract This paper studies the ferric sulphate leaching of converter slag (9% Cu) in order to recover Cu through a process in which bacteria regenerate the leaching agent. For this purpose, the effect of variables such as pulp density, ferric concentration, temperature and size particle have been investigated. As the Cu extraction is limited by the physical refractoriness of slag, a mild ...

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Converter Slag - an overview ScienceDirect Topics

The computer simulation of copper matte converting in a Mitsubishi converter [38] in which equilibrium is well established was also carried out using the commercially observed data for the distribution coefficients of minor elements between copper and slag.The content of CaO in the Mitsubishi converter slag (17.8 wt%) is lower than that (25 wt%) adopted by Takeda and coworkers [40] and the ...

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Bioleaching and recovery of metals from final slag waste ...

2011-9-1  Research highlights Bioleaching and recovery of metals from final smelter slag was studied. Metal yields after 29 days of leaching were 41% Fe, 62% Cu, 35% Zn and 44% Ni. Metals were subsequently precipitated using biogenic sulfide. Over 98% of Cu precipitated at pH ⩾ 2.8 and over 99% of Zn precipitated at pH ⩾ 3.9. The precipitation of Ni and Fe required higher pH values and was less ...

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Bioleaching of copper- and zinc-bearing ore using ...

2018-7-19  Bioleaching of copper and zinc from the ore body during 10 days of processing using indigenous iron-oxidizing bacterial consortia under optimized conditions are studied. Copper and zinc extraction rates both in bacterial and control systems in shaking conditions were higher (Fig. 3 a, b).

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Bio-Assisted Leaching of Copper, Nickel and Cobalt from ...

Bioleaching of the converter slag was studied on bench scale using Thiobacillus ferrooxidans, an iron oxidising bacteria, for recovery of valuable metals at room temperature.Parameters such as particle size, pH, pulp density, Fe(II)/Fe(III) ratio and amount of Fe(II), additives etc. were optimised to treat the slag.

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Bioleaching of Cu and Pb from printed circuit boards by ...

2019-6-27  The best metal bioleaching efficiency was achieved by A. niger fungus, which extracted approximately 46.92% of Cu, and almost 30.63% of Pb from PCBs. R. oligosporus leached only 8.53 and 19.61% of Cu and Pb, respectively. Key words: Aspergillus niger, bioleaching, Cu, Pb, printed circuit boards, Rhizopus oligosporus.

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Recovery of Al, Cr and V from Steel Slag by Bioleaching ...

2019-7-13  ferrooxidans, and Aspergillus niger were used with electric arc furnace (EAF) slag for two-step bioleaching (Hocheng et al., 2014). Acidithiobacillus thiooxidans, Pseudomonas putida and Aspergillus niger were tested with roasted Linz-Donawitz converter slag for vanadium recovery (Mirazimi et al., 2015) in one and two-step bioleaching. However,

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Bio leaching of copper, nickel and cobalt from copper ...

Bioleaching of the converter slag was studied on bench scale using Thiobacillus Ferroxidens, an iron oxidising bacteria for recovery of valuable metals at room temperature. Parameters such as particle size, pH, pulp density, Fe (II)/Fe(III) ratio and amount of Fe(II), additives etc., were optimised to treat the slag. In bioleaching with samples-1, 98.0% Cu in 50 days, 60.0% Ni in 75 days and ...

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Scientific Academic Publishing - sapub

Bioleaching of copper converter slag using Aspergillus niger isolated from lateritic nickel ore, L.B. Sukla, R.N. Kar and V.V. Panchanadikar, International Journal of Environmental Studies, Sec-B, Env. Science and Technology (USA) Vol 47 1993 81-86 [97]

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Scientific Academic Publishing - sapub

Bioleaching of copper converter slag using Aspergillus niger isolated from lateritic nickel ore, L.B. Sukla, R.N. Kar and V.V. Panchanadikar, International Journal of Environmental Studies, Sec-B, Env. Science and Technology (USA) Vol 47 1993 81-86 [97]

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Bio leaching of copper, nickel and cobalt from copper ...

Bioleaching of the converter slag was studied on bench scale using Thiobacillus Ferroxidens, an iron oxidising bacteria for recovery of valuable metals at room temperature. Parameters such as particle size, pH, pulp density, Fe (II)/Fe(III) ratio and amount of Fe(II), additives etc., were optimised to treat the slag. In bioleaching with samples-1, 98.0% Cu in 50 days, 60.0% Ni in 75 days and ...

More

Biorecovery of copper from converter slags: Slags ...

Abstract This paper studies the ferric sulphate leaching of converter slag (9% Cu) in order to recover Cu through a process in which bacteria regenerate the leaching agent. For this purpose, the effect of variables such as pulp density, ferric concentration, temperature and size particle have been investigated. As the Cu extraction is limited by the physical refractoriness of slag, a mild ...

More

Bio-Assisted Leaching of Copper, Nickel and Cobalt from ...

Bioleaching of the converter slag was studied on bench scale using Thiobacillus ferrooxidans, an iron oxidising bacteria, for recovery of valuable metals at room temperature.Parameters such as particle size, pH, pulp density, Fe(II)/Fe(III) ratio and amount of Fe(II), additives etc. were optimised to treat the slag.

More

Bioleaching of Heavy Metals by Sulfur Oxidizing Bacteria ...

2021-7-4  Trace elements are processed by using sulfur oxidizing microorganisms (Aspergillus niger). Heap bioleaching of chalcocite ores is widely used as a relatively low cost process option, especially for marginal deposits. Aspergillus niger has good leaching efficiency in the extraction of Fe, Sn and Au.

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Recovery of valuable metals from waste printed circuit ...

2021-2-7  Bioleaching of copper from WPCBs using Aspergillus niveus at 37°C and 180 rpm The comparison of all the bioleaching approaches is represented in Figure 9 . The variation in metal extraction from WPCBs by different bioleaching approaches was found to be statistically significant using Student's t -test as in Figure 9 .

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Bioleaching of Cu and Pb from printed circuit boards by ...

2019-6-27  The best metal bioleaching efficiency was achieved by A. niger fungus, which extracted approximately 46.92% of Cu, and almost 30.63% of Pb from PCBs. R. oligosporus leached only 8.53 and 19.61% of Cu and Pb, respectively. Key words: Aspergillus niger, bioleaching, Cu, Pb, printed circuit boards, Rhizopus oligosporus.

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Efficiency of Chemical and Biological Leaching of Copper ...

The reactor bioleaching results, both in terms of yield and leaching kinetics (51% Cu, 36% Co, and 44% Zn in 7 days), compare favourably with previous stirred tank reactor bioleaching studies for copper slag. Stirred tank bioleaching at 10% (w/v) pulp density resulted in 44% Cu and 14% Zn leaching yields at pH 2.3–2.5, values which were ...

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The Application of Fungi for Bioleaching of Municipal ...

Bioleaching of heavy metals from a low-grade mining ore using Aspergillus niger. Journal of Hazardous Materials 110 (2004): 77-84. Journal of Hazardous Materials 110 (2004): 77-84. Nazareth S, Marbaniang T. Effect of heavy metals on cultural and morphological growth characteristics of

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Recovery of copper from copper slag and copper slag ...

Copper extraction from the slag was typically found to be twice as high as that from the slag flotation tailings. Hydrogen peroxide was determined to be the best lixiviant. Thus, copper and iron extractions were 63.4% and 48.6%, respectively, when leaching the slag with 3 M H2O2, after 120 minutes of reaction at room temperature.

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Bioleaching of heavy metals from spent household

Abstract In this study, spent batteries were selected from municipal waste for bioleaching and extraction of their heavy metals. The bioleaching of nickel, cadmium, and cobalt from Ni–Cd and NiMH batteries was done using Acidithiobacillus ferrooxidans, a resistant strain used for bioleaching. The adaptation process was successful and the solid-to-liquid ratio reached 10 g/L (battery powder ...

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Bioleaching of Heavy Metals from Hospital Sewage

2021-6-4  bioleaching of heavy metals from hospital sewage sludge using cassava peels fermentation extracts. Sewage sludge sample was collected from the University College Hospital sewage treatment plant, Ibadan, Oyo State, Nigeria and analysed for selected heavy metal concentrations such as Copper

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Bioleaching of Heavy Metals by Sulfur Oxidizing Bacteria ...

2021-7-4  Trace elements are processed by using sulfur oxidizing microorganisms (Aspergillus niger). Heap bioleaching of chalcocite ores is widely used as a relatively low cost process option, especially for marginal deposits. Aspergillus niger has good leaching efficiency in the extraction of Fe, Sn and Au.

More

Bioleaching for Nanoparticle Production as a Solution for ...

The conversion of insoluble metals to soluble ones by microorganisms is called bioleaching. Bacteria like Chromobacterium violaceum, Pseudomonas species, Sulfobacillus thermosulfidooxidans, and Acidiphilium acidophilum bioleach gold, silver, nickel, and copper of electronic wastes. There are different fungi like Aspergillus niger,

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Bioleaching for Removal of Chromium and Associated

The ability of Acidithiobacillus ferrooxidans to remove chromium and other metals from LD slag was examined. Additionally the option to retrieve P from LD slag was evaluated. Due to the facts that A. ferrooxidans is a facultative anaerobic microorganism and LD slag is an alkaline and oxidic material, both oxidative and reductive bioleaching experiments were carried out.

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The Application of Fungi for Bioleaching of Municipal ...

Bioleaching of heavy metals from a low-grade mining ore using Aspergillus niger. Journal of Hazardous Materials 110 (2004): 77-84. Journal of Hazardous Materials 110 (2004): 77-84. Nazareth S, Marbaniang T. Effect of heavy metals on cultural and morphological growth characteristics of

More

Bioleaching of Heavy Metals from Hospital Sewage

2021-6-4  bioleaching of heavy metals from hospital sewage sludge using cassava peels fermentation extracts. Sewage sludge sample was collected from the University College Hospital sewage treatment plant, Ibadan, Oyo State, Nigeria and analysed for selected heavy metal concentrations such as Copper

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Microbes and mineral recovery: Bioleaching of copper,

2020-4-22  • Conversion of insoluble metal sulfides into water-soluble metal sulfates. • Copper sulfide is microbially oxidized to copper sulfate and metal values are present in the aqueous phase and the remaining solids are discarded • Bioleaching is an important field of biohydrometallurgy .

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BIOLEACHING OF COBALT FROM MINERAL PRODUCTS

2004-10-13  Fig. 2. Copper, cobalt and arsenic extraction in the bacterial leaching of sample I (+ 0.315 mm) Figures 3 and 4 show the experimental kinetic curves for each size fraction of the second sample, respectively. As can be seen from Fig 3, copper, cobalt and arsenic extraction after 240 hours of bioleaching were 73.09, 79.20 and 59.01%, respectively.

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Research progress in enhanced bioleaching of copper ...

2019-5-7  Compared with the traditional pyrometallurgical process, copper bioleaching has distinctive advantages of high efficiency and lower cost, enabling efficiently extracts of valuable metal resources from copper sulfides. Moreover, during long-term industrial applications of bioleaching, many regulatory enhancements and technological methods are used to accelerate the interfacial reactions.

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Recovery of copper from copper slag and copper slag ...

Copper extraction from the slag was typically found to be twice as high as that from the slag flotation tailings. Hydrogen peroxide was determined to be the best lixiviant. Thus, copper and iron extractions were 63.4% and 48.6%, respectively, when leaching the slag with 3 M H2O2, after 120 minutes of reaction at room temperature.

More

Bioleaching: metal solubilization by microorganisms

1997-7-1  Abstract. Bioleaching is a simple and effective technology for metal extraction from low-grade ores and mineral concentrates. Metal recovery from sulfide minerals is based on the activity of chemolithotrophic bacteria, mainly Thiobacillus ferrooxidans and T. thiooxidans, which convert insoluble metal sulfides into soluble metal sulfates.Non-sulfide ores and minerals can be treated by ...

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Bio-Hydrometallurgical Processing of Non-Ferrous Metals ...

Stirred tank reactor (STR) leaching of non-ferrous metals from copper smelting slag was conducted using biogenic Fe3+ solution containing H2SO4. The solution was initially obtained through biooxidation of FeS2+S° by using a moderately thermophilic microbial culture such as Sulfobacillus thermosulfidooxidans at 45°C and was applied as lixiviant in STR leaching experiments.

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