Bioleaching of Chalcopyrite Waste Rock in the Presence of the Copper Solvent Extractant LIX984N

doi:10.3389/fmicb.2022.820052

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	Bioleaching of Chalcopyrite Waste Rock in the Presence of the Copper Solvent Extractant LIX984N
	Liu, Xiaohui 1; Li, Yuhong 3; Cao, Jianfeng 1; Zeng, Zhenshun 1; Liu, Xiaorong 3,4; Zhang, Ruiyong 3,6,7; Li, Qian 1,3; Sand, Wolfgang 2,3,5
刊名	FRONTIERS IN MICROBIOLOGY
	2022-03-18
卷号	13 页码:16
关键词	bioleaching chalcopyrite waste rock LIX984N Acidithiobacillusferrooxidans Leptospirillum ferrooxidans Sulfobacillus thermosulfidooxidans
DOI	10.3389/fmicb.2022.820052
通讯作者	Li, Qian(qianli@gzhu.edu.cn)
英文摘要	Heap bioleaching, the solubilization of metal ions from metal sulfides by microbial oxidation, is often combined with solvent extraction (SX) and electrowinning to recover, e.g., copper from low-grade ores. After extraction, the leaching solution is recycled, but the entrained organic solvents may be toxic to the microorganisms. Here Acidithiobacillus ferrooxidans, Leptospirillum ferrooxidans, and Sulfobacillus thermosulfidooxidans were selected to perform bioleaching of chalcopyrite waste rock in the presence of the SX reagent (2.5% v/v LIX984N in kerosene). Possibly inhibitory effects have been evaluated by copper extraction, bacterial activity, number of actively Fe(II)-oxidizing cells, and biofilm formation. Microcalorimetry, most probable number determination, and atomic force microscopy combined with epifluorescence microscopy were applied. The results show that 100 and 300 mg/L SX reagent could hardly inhibit At. ferrooxidans from oxidizing Fe2+, but they seriously interfered with the biofilm formation and the oxidization of sulfur, thereby hindering bioleaching. L. ferrooxidans was sensitive to 50 mg/L SX reagent, which inhibited its bioleaching completely. Sb. thermosulfidooxidans showed different metabolic preferences, if the concentration of the SX reagent differed. With 10 mg/L LIX984N Sb. thermosulfidooxidans preferred to oxidize Fe2+ and extracted the same amount of copper as the assay without LIX984N. With 50 mg/L extractant the bioleaching stopped, since Sb. thermosulfidooxidans preferred to oxidize reduced inorganic sulfur compounds.
资助项目	National Natural Science Foundation of China[41903068] ; Science and Technology Program of Guangzhou[202102020470] ; German Federation of Industrial Research Associations[IGF 18352 N]
WOS研究方向	Microbiology
语种	英语
出版者	FRONTIERS MEDIA SA
WOS记录号	WOS:000779372600001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/178846]
专题	海洋研究所_海洋腐蚀与防护研究发展中心
通讯作者	Li, Qian
作者单位	1.Guangzhou Univ, Sch Environm Sci & Engn, Key Lab Water Qual & Conservat Pearl River Delta, Minist Educ, Guangzhou, Peoples R China 2.TU Bergakad Freiberg, Interdisciplinary Ecol Ctr, Freiberg, Germany 3.Univ Duisburg Essen, Biofilm Ctr, Aquat Biotechnol, Essen, Germany 4.Shanghai Inst Technol, Sch Mat Sci & Engn, Shanghai, Peoples R China 5.Donghua Univ, Coll Environm Sci & Engn, Shanghai, Peoples R China 6.Pilot Natl Lab Marine Sci & Technol, Open Studio Marine Corros & Protect, Qingdao, Peoples R China 7.Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Liu, Xiaohui,Li, Yuhong,Cao, Jianfeng,et al. Bioleaching of Chalcopyrite Waste Rock in the Presence of the Copper Solvent Extractant LIX984N[J]. FRONTIERS IN MICROBIOLOGY,2022,13:16.
APA	Liu, Xiaohui.,Li, Yuhong.,Cao, Jianfeng.,Zeng, Zhenshun.,Liu, Xiaorong.,...&Sand, Wolfgang.(2022).Bioleaching of Chalcopyrite Waste Rock in the Presence of the Copper Solvent Extractant LIX984N.FRONTIERS IN MICROBIOLOGY,13,16.
MLA	Liu, Xiaohui,et al."Bioleaching of Chalcopyrite Waste Rock in the Presence of the Copper Solvent Extractant LIX984N".FRONTIERS IN MICROBIOLOGY 13(2022):16.