Bioleaching of Chalcopyrite Waste Rock in the Presence of the Copper Solvent Extractant LIX984N
文献类型：期刊论文
| 作者 | Liu, Xiaohui1; Li, Yuhong7; Cao, Jianfeng1; Zeng, Zhenshun1; Liu, Xiaorong6,7; Zhang, Ruiyong2,3,7; Li, Qian1,7 ; Sand, Wolfgang4,5,7
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| 刊名 | FRONTIERS IN MICROBIOLOGY
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| 出版日期 | 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 |
| WOS记录号 | WOS:000779372600001 |
| 出版者 | FRONTIERS MEDIA SA |
| 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.Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao, Peoples R China 3.Pilot Natl Lab Marine Sci & Technol, Open Studio Marine Corros & Protect, Qingdao, Peoples R China 4.Donghua Univ, Coll Environm Sci & Engn, Shanghai, Peoples R China 5.TU Bergakad Freiberg, Interdisciplinary Ecol Ctr, Freiberg, Germany 6.Shanghai Inst Technol, Sch Mat Sci & Engn, Shanghai, Peoples R China 7.Univ Duisburg Essen, Biofilm Ctr, Aquat Biotechnol, Essen, Germany |
| 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. |
入库方式： OAI收割
来源：海洋研究所
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