Reductive dissolution of jarosite by inorganic sulfur compounds catalyzed by Acidithiobacillus thiooxidans

doi:10.1016/j.hydromet.2022.105908

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	Reductive dissolution of jarosite by inorganic sulfur compounds catalyzed by Acidithiobacillus thiooxidans
	Chen, Hong-Rui 1; Zhang, Duo-Rui 1; Nie, Zhen-Yuan 1; Xia, Jin-Lan 1; Li, Qian 1; Zhang, Rui-Yong 2,3; Yin, He-Hao 1; Pakostova, Eva 4
刊名	HYDROMETALLURGY
	2022-06-01
卷号	212 页码:10
关键词	Acidithiobacillus thiooxidans Jarosite iron reduction Sulfur oxidation Bioleaching
ISSN号	0304-386X
DOI	10.1016/j.hydromet.2022.105908
通讯作者	Xia, Jin-Lan(jlxia@csu.edu.cn) ; Zhang, Rui-Yong(ruiyong.zhang@qdio.ac.cn)
英文摘要	The adsorption of jarosite and the resulting passivation of mineral surfaces can negatively influence metal extraction from sulfidic ores as well as the fate of other elements in biohydrometallurgical processes. Some bioleaching microorganisms mediate dissimilatory iron reduction coupled to sulfur oxidation (DIRSO), a process utilized predominantly in continuously enhanced leaching of metals from sulfide and/or oxidized ores. In this study, the reductive dissolution of jarosite (biosynthesized by the iron-oxidizing archaeon Acidianus manzaensis) catalyzed by the mesophilic acidophilic bacterium Acidithiobacillus (At.) thiooxidans oxidizing different inorganic sulfur compounds was investigated. Kinetic measurements of pH, ORP, iron concentrations, and planktonic cell counts were performed to describe the reductive dissolution of jarosite. Moreover, the solid leaching residues were analyzed using X-ray absorption near edge structure (XANES), Inductively coupled plasma - optical emission spectrometry (ICP-OES), scanning electron microscopy (SEM), X-ray diffraction (XRD), and Raman spectroscopy. The dissolution rates of jarosite after 34 days of bioleaching by At. thiooxidans with S0, Na2S2O3, and Na2SO3 were 41.7, 76.3, and 98.4%, respectively, while negligible jarosite dissolution was detected in abiotic controls. The presence of Na2S2O3 and Na2SO3 resulted in structural modifications on the jarosite surfaces, but the dissolution of jarosite was not promoted in the absence of At. thiooxidans. In the biotic assays with Na2SO3, jarosite was completely dissolved, indicating that Na2SO3 was the most suitable electron donor (out of those tested) for DIRSO by At. thiooxidans. The findings obtained in this study can contribute to designing suitable bioleaching strategies for oxidized ores. They also highlight the potential of microbially catalyzed DIRSO to mitigate jarosite formation that often hinders bioleaching of sulfidic ores.
资助项目	National Natural Science Foundation of China[51861135305] ; National Natural Science Foundation of China[42076044] ; National Key Research and Development Program of China[2018YFE0110200] ; Open Funds of Beijing Synchrotron Radiation Facility[2020-BEPC-PT-003789] ; Open Funds of Beijing Synchrotron Radiation Facility[2020-BEPC-ZD-000184]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000816053900002
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/179628]
专题	海洋研究所_海洋腐蚀与防护研究发展中心
通讯作者	Xia, Jin-Lan; Zhang, Rui-Yong
作者单位	1.Cent South Univ, Sch Minerals Proc & Bioengn, Key Lab Biomet Minist Educ China, Changsha 410083, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China 3.Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Marine Corros & Protect, Qingdao 266237, Peoples R China 4.Coventry Univ, Inst Hlth & Wellbeing, Ctr Sport, Exercise & Life Sci, Coventry CV1 5FB, Warwickshire, England
推荐引用方式 GB/T 7714	Chen, Hong-Rui,Zhang, Duo-Rui,Nie, Zhen-Yuan,et al. Reductive dissolution of jarosite by inorganic sulfur compounds catalyzed by Acidithiobacillus thiooxidans[J]. HYDROMETALLURGY,2022,212:10.
APA	Chen, Hong-Rui.,Zhang, Duo-Rui.,Nie, Zhen-Yuan.,Xia, Jin-Lan.,Li, Qian.,...&Pakostova, Eva.(2022).Reductive dissolution of jarosite by inorganic sulfur compounds catalyzed by Acidithiobacillus thiooxidans.HYDROMETALLURGY,212,10.
MLA	Chen, Hong-Rui,et al."Reductive dissolution of jarosite by inorganic sulfur compounds catalyzed by Acidithiobacillus thiooxidans".HYDROMETALLURGY 212(2022):10.