Electrochemical effect on bioleaching of arsenic and manganese from tungsten mine wastes using Acidithiobacillus spp.

Nguyễn, Văn Khánh; Ha, Myung-Gyu; Shin, Seunghye; Seo, Minhyeong; Jang, Jongwon; Jo, Seungjin; Kim, Donghyeon; Lee, Sung-Min; Jung, Yoonho; Kang, Pyeongjeong; Shin, Chajeong; Ahn, Yeonghee

doi:10.1016/j.jenvman.2018.06.040

Cited by 20 publications

(5 citation statements)

References 48 publications

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“…Biometallurgical leaching suffers from slow kinetics; it typically requires several days to reach significant leaching rates. Different strategies were developed to accelerate the leaching kinetics such as the application of a voltage 148 to improve electron transfer reactions, using a weak magnetic field, 149 ultrasounds, 150 or ultraviolet irradiation 151 to induce mutations on the bacteria, this last approach being the only one so far to provide a clear improvement of the leaching kinetics. A more promising approach is the addition of a catalytic agent like activated charcoal, 152 or silver.…”

Section: Resultsmentioning

confidence: 99%

A toolbox for improved recycling of critical metals and materials in low-carbon technologies

Zante,

Elgar,

Hartley

et al. 2024

RSC Sustain.

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Section: Resultsmentioning

confidence: 99%

A toolbox for improved recycling of critical metals and materials in low-carbon technologies

Zante,

Elgar,

Hartley

et al. 2024

RSC Sustain.

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“…One successful bioleaching experiment on tungsten tailings was to remove As and manganese (Mn) from tungsten tailings. When mixed cultures of Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans were applied, the recovery of As could reach 96.7%, and the recovery of Mn almost 100% [115,116].…”

Section: Bioleachingmentioning

confidence: 99%

A Review of Tungsten Resources and Potential Extraction from Mine Waste

2021

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Tungsten is recognized as a critical metal due to its unique properties, economic importance, and limited sources of supply. It has wide applications where hardness, high density, high wear, and high-temperature resistance are required, such as in mining, construction, energy generation, electronics, aerospace, and defense sectors. The two primary tungsten minerals, and the only minerals of economic importance, are wolframite and scheelite. Secondary tungsten minerals are rare and generated by hydrothermal or supergene alteration rather than by atmospheric weathering. There are no reported concerns for tungsten toxicity. However, tungsten tailings and other residues may represent severe risks to human health and the environment. Tungsten metal scrap is the only secondary source for this metal but reprocessing of tungsten tailings may also become important in the future. Enhanced gravity separation, wet high-intensity magnetic separation, and flotation have been reported to be successful in reprocessing tungsten tailings, while bioleaching can assist with removing some toxic elements. In 2020, the world’s tungsten mine production was estimated at 84 kt of tungsten (106 kt WO3), with known tungsten reserves of 3400 kt. In addition, old tungsten tailings deposits may have great potential for exploration. The incomplete statistics indicate about 96 kt of tungsten content in those deposits, with an average grade of 0.1% WO3 (versus typical grades of 0.3–1% in primary deposits). This paper aims to provide an overview of tungsten minerals, tungsten primary and secondary resources, and tungsten mine waste, including its environmental risks and potential for reprocessing.

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“…Increases of pH were observed over time in the samples of indigenous microbial consortium and combination of both. The result might be explained by the incomplete oxidation process of lactate to acetate, during which HCO 3 − was produced and alkalinity increased (Equation ( 2)) [43] in addition to the pH buffering capacity of soil [19].…”

Section: Ph Redox Potential and Lactatementioning

confidence: 99%

“…Bioleaching techniques using microorganisms are simple, efficient, cost-effective, and environmental-friendly methods without the generation of toxic byproducts when compared to chemical leaching [11][12][13]. Microbial bioleaching has been applied to remove a variety of toxic elements, including As from contaminated soils [14,15], sediments [16,17], and mine tailings [18,19].…”

Section: Introductionmentioning

confidence: 99%

Effect of Indigenous Microbial Consortium on Bioleaching of Arsenic from Contaminated Soil by Shewanella putrefaciens

Tran

Han

Ko³

et al. 2020

Sustainability

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The effects of indigenous microbial consortium on removal of As from As-contaminated soil using an Fe(III)-reducing bacterium Shewanella putrefaciens were investigated under circumneutral pH condition. Sequential extraction of As revealed that more than 30% of As was associated with Fe(III)-(oxy)hydroxides in the soil. Bioleaching experiments were conducted anaerobically with a supply of lactate as a carbon source. The highest As removal efficiency (57.5%) was obtained when S. putrefaciens and indigenous bacterial consortium coexisted in the soil. S. putrefaciens and indigenous bacteria solely removed 30.1% and 16.4% of As from the soil, respectively. The combination of S. putrefaciens and indigenous bacteria led to a higher amount of labile As after microbial dissolution of Fe(III)-(oxy)hydroxides. After microbial treatment, soil quality represented by pH and organic content appeared to be preserved. The results indicated that the ecological and physiological understanding of the indigenous microbiome might be important for the efficient application of bioleaching technology to remove As from contaminated soils.

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Electrochemical effect on bioleaching of arsenic and manganese from tungsten mine wastes using Acidithiobacillus spp.

Cited by 20 publications

References 48 publications

A toolbox for improved recycling of critical metals and materials in low-carbon technologies

A toolbox for improved recycling of critical metals and materials in low-carbon technologies

A Review of Tungsten Resources and Potential Extraction from Mine Waste

Effect of Indigenous Microbial Consortium on Bioleaching of Arsenic from Contaminated Soil by Shewanella putrefaciens

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