Sulfide mineral bioleaching: Understanding of microbe-chemistry assisted hydrometallurgy technology and acid mine drainage environment protection

Liao, Rui; Yu, Shichao; Wu, Baiqiang; Zhao, Chunxiao; Lin, Hao; Hong, Maoxin; Wu, Haixia; Yang, Congren; Zhang, Yansheng; Xie, Jianping; Qin, Wenqing; Wang, Jun; Qiu, Guanzhou

doi:10.1007/s11771-020-4372-4

Cited by 13 publications

(7 citation statements)

References 35 publications

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“…Bioleaching is the process of converting insoluble metal compo compounds through the interaction between microorganisms and meta active autotrophic microorganism, At. ferrooxidans plays an important r cessing by utilizing its unique metabolic pathways and biocatalytic pro sidered to be the main strain in biohydrometallurgy [36]. At present, A been applied in leaching Cu, Zn, Ni, Pb, etc.…”

Section: Anaerobic Bioleaching Of Mine Tailingsmentioning

confidence: 99%

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Application Prospect of Anaerobic Reduction Pathways in Acidithiobacillus ferrooxidans for Mine Tailings Disposal: A Review

Yue,

Yang,

et al. 2023

Minerals

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The accumulation of mine tailings on Earth, generated from the extraction, processing, and utilization of mineral resources, is a serious environmental challenge. The importance of the recovery of valuable elements and rare-earth elements, together with the economic benefits of precious and base metals, is a strong incentive to develop sustainable methods to recover metals from tailings. Currently, researchers are attempting to improve the efficiency of valuable elements and rare-earth elements recovery from tailings using bioleaching, a more sustainable method compared to traditional methods. In this work, we report the research status of the application of Acidithiobacillus ferrooxidans (At. ferrooxidans) anaerobic reduction in tailings disposal. Recent advances in the anaerobic characteristics of At. ferrooxidans recovery process and technical difficulties are further described. We found that current research has made significant progress in anaerobic recovery. This is of great significance for the development of bioleaching technologies and industrial production of heavy metals in tailings. Finally, based on the perspectives and directions of this review, the present study can act as an important reference for the academic participants involved in this promising field.

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Section: Anaerobic Bioleaching Of Mine Tailingsmentioning

confidence: 99%

“…As a highly active autotrophic microorganism, At. ferrooxidans plays an important role in mineral processing by utilizing its unique metabolic pathways and biocatalytic properties, and is considered to be the main strain in biohydrometallurgy [36]. At present, At.…”

Section: Anaerobic Bioleaching Of Mine Tailingsmentioning

confidence: 99%

Application Prospect of Anaerobic Reduction Pathways in Acidithiobacillus ferrooxidans for Mine Tailings Disposal: A Review

Yue,

Yang,

et al. 2023

Minerals

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“…Pyrite content in the test group decreased from 0.66% to 0.14% with a desulfurization rate of 78.79%, whereas it remained unchanged in the control group, suggesting the dissolution of pyrite was attributed to bacteria oxidation. SOB and FOB have a special enzyme system that could enhance the oxidation of pyrite [46,47]. Under the action of microbial oxidation, sulfur is converted into sulfates and hence improved the desulfurization of gangue [48].…”

Section: Desulfurization and Sulfur Speciation Analysismentioning

confidence: 99%

Bioleaching Coal Gangue with a Mixed Culture of Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans

Chen

Huang

et al. 2021

Minerals

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A mixed culture of A. ferrooxidans and A. thiooxidans isolated from a coal gangue dump was used to bioleach coal gangue in a column reactor to investigate the leaching of elements. The changes of metal ions (Fe, Mn and Cr) and sulfate in the leaching solution, elemental composition, mineral components and sulfur speciation of the coal gangue before and after bioleaching were analyzed by atomic absorption, anion chromatography, XRF, XRD and XPS. The results show that the mixed culture could promote the release of metal ions in coal gangue, with a leaching concentration of Fe > Mn > Cr. EC and Eh have significantly increased with the increase of metal ion concentrations in the leaching solution. XRF analyses show that the contents of Fe, Mn and S decreased in coal gangue after bioleaching. XRD results suggest that the bioleaching has impacts on minerals in coal gangue, particularly the Fe-containing components. XPS analyses show that sulfur speciation in the raw gangue samples was associated with sulfate, dibenzothiophene and pyrite sulfur. After continuous leaching by the mixed culture, the total sulfur, pyrite sulfur and sulfate sulfur in coal gangue decreased from 2.06% to 1.18%, 0.66% to 0.14% and 1.02% to 0.52%. The desulfurization rates of the pyrite and sulfate were 78.79% and 49.02 %. It is concluded that the mixed culture of these two microorganisms could effectively leach metals from coal gangue coupling with the oxidation of sulfide to sulfate. This study has provided fundamental information as a potential application in the recovery of valuable metals from coal gangue or environmental remediation related to gangue in the future.

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“…It has been proved to be an effective approach to extract uranium from low-grade or complex refractory ores because of its economic feasible and environmentally sustainable (Tuovinen and Bhatti, 1999 ; Abhilash and Pandey, 2013a ; Wang et al, 2019 ; Kaksonen et al, 2020 ). Bioleaching microorganisms play a critical role in the oxidative decomposition of many sulfide ores (Liao et al, 2020 ; Yin et al, 2020 ). Chemoautotrophic leaching bacteria can gain ATP by the oxidation of ferrous iron and/or reduced inorganic sulfur compounds (Vera et al, 2013 ; Ma et al, 2017 ).…”

Section: Introductionmentioning

confidence: 99%

Sulfur enhancement effects for uranium bioleaching in column reactors from a refractory uranium ore

Yang

et al. 2023

Front. Microbiol.

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The feasibility of sulfur enhancement for uranium bioleaching in column reactors was assessed with a designed mixed Acidithiobacillus ferrooxidans, Acidithiobacillus thiooxidans and Leptospirillum ferriphilum from a refractory uranium ore. The uranium extraction reached 86.2% with the sulfur enhancement (1 g/kg) in 77 days leaching process, increased by 12.6% vs. the control without sulfur addition. The kinetic analysis showed that uranium bioleaching with sulfur enhancement in columns followed an internal diffusion through the product layer-controlled model. Ore residue characteristics indicated that sulfur enhancement could strengthen the porosity of passivation layer, improving the ore permeability. Notably, bacterial community analysis showed that sulfur enhancement at 1 g/kg could make the iron-oxidizing and sulfur-oxidizing bacteria on the ore surface maintain a good balance (approx. 1:1), and thus decomposing ore more effectively. Lastly, a possible mechanism model for uranium bioleaching with sulfur enhancement was proposed.

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Sulfide mineral bioleaching: Understanding of microbe-chemistry assisted hydrometallurgy technology and acid mine drainage environment protection

Cited by 13 publications

References 35 publications

Application Prospect of Anaerobic Reduction Pathways in Acidithiobacillus ferrooxidans for Mine Tailings Disposal: A Review

Application Prospect of Anaerobic Reduction Pathways in Acidithiobacillus ferrooxidans for Mine Tailings Disposal: A Review

Bioleaching Coal Gangue with a Mixed Culture of Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans

Sulfur enhancement effects for uranium bioleaching in column reactors from a refractory uranium ore

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