Effect of ferric ions on the anaerobic bio-dissolution of jarosites by Acidithiobacillus ferrooxidans

Yang, Yuankun; Chen, Shu; Wang, Bin; Wen, Xin-Yu; Li, Hanke; Zeng, Raymond J.

doi:10.1016/j.scitotenv.2019.136334

Cited by 14 publications

(3 citation statements)

References 41 publications

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“…ferrooxidans is also one of the reasons for the efficient treatment of tailings. The bacterial concentration improved the probability of bacterial contact with the tailings, thus increasing the dissolution efficiency [78]. For instance, the extracellular polymeric substances (EPS) composition and content of At.…”

Section: Microorganism Concentrationmentioning

confidence: 99%

“…Hence, measures must be taken to control environmental parameters and optimize culture conditions to increase the concentration and activity of microorganisms, thereby improving the treatment effect. Yang, Chen [78] found that with the addition of Fe 3+ , the rate and efficiency of jarosite bio-dissolution can be significantly accelerated and improved. Dong, Chong [81] explored the enhanced effect of biochar on the bioleaching of stone coal tailings by At.…”

Section: Microorganism Concentrationmentioning

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: Microorganism Concentrationmentioning

confidence: 99%

Section: Microorganism Concentrationmentioning

confidence: 99%

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

Yue,

Yang,

et al. 2023

Minerals

Self Cite

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“…The pH of a solution has a major influence on microbial activities and the oxidation rates of Fe 2+ [ 11 , 12 ]. Unsuitable pH environments are harmful to the growth and metabolism of bacteria, resulting in a decline in bacterial oxidation [ 13 ]. A. ferrooxidans can substantially alter the pH conditions of the bacteria−mineral interface and its surrounding microenvironment, consequently enhancing the mineral dissolution process [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of Initial pH and Carbonate Rock Dosage on Bio-Oxidation and Secondary Iron Mineral Synthesis

Zhang

Wang

et al. 2023

Toxics

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The effect of pH is a key factor in biomineralization mediated by Acidithiobacillus ferrooxidans to promote the transformation of Fe into secondary iron minerals. This study aimed to investigate the effects of initial pH and carbonate rock dosage on bio-oxidation and secondary iron mineral synthesis. Variations in pH and the concentrations of Ca2+, Fe2+, and total Fe (TFe) in the growth medium of A. ferrooxidans were examined in the laboratory to determine how they affect the bio-oxidation process and secondary iron mineral synthesis. The results showed that in systems with an initial pH of 1.8, 2.3, and 2.8, the optimum dosages of carbonate rock were 30, 10, and 10 g, respectively, which significantly improved the removal rate of TFe and the amount of sediments. At an initial pH of 1.8 and a carbonate rock dosage of 30 g, the final removal rate of TFe reached 67.37%, which was 28.03% higher than that of the system without the addition of carbonate rock, and 36.9 g·L−1 of sediments were generated, which was higher than that of the system without the addition of carbonate rock (6.6 g·L−1). Meanwhile, the number of sediments generated by adding carbonate rock were significantly higher than those without the addition of carbonate rock. The secondary minerals were characterized by a progressive transition from low crystalline assemblages composed of calcium sulfate and subordinated jarosite, to well crystal-line assemblages composed of jarosite, calcium sulfate, and goethite. These results have important implications for comprehensively understanding the dosage of carbonate rock in mineral formation under different pH conditions. The findings help reveal the growth of secondary minerals during the treatment of AMD using carbonate rocks under low-pH conditions, which offers valuable information for combining the carbonate rocks with secondary minerals to treat AMD.

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Biological materials formed by Acidithiobacillus ferrooxidans and their potential applications

et al. 2020

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A variety of biological materials including schwertmannite, jarosite, iron-sulfur cluster (ISC) and magnetosomes can be produced by Acidithiobacillus ferrooxidans (A. ferrooxidans). Their possible formation mechanisms involved in iron transformation, iron transport, and electron transfer were proposed. The schwertmannite formation usually occurs under the pH of 2.0-3.51, and a lower or higher pH will promote jarosite to be produced. Available Fe 2+ in the environment and the carrier proteins that can transport Fe 2+ to the intracellular membranes of A. ferrooxidans play a critical role in the synthesis of magnetosomes and ISC. The potential applications of these biological materials were reviewed, including removal of heavy metal by schwertmannite, detoxification of toxic species by jarosite, the transference of electron and ripening the iron sulfur protein by ISC, and biomedical application of magnetosomes. Additionally, some perspectives for the molecular mechanisms of synthesis and regulation of these biomaterials were briefly described.

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Effect of ferric ions on the anaerobic bio-dissolution of jarosites by Acidithiobacillus ferrooxidans

Cited by 14 publications

References 41 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

Effects of Initial pH and Carbonate Rock Dosage on Bio-Oxidation and Secondary Iron Mineral Synthesis

Biological materials formed by Acidithiobacillus ferrooxidans and their potential applications

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