Chalcopyrite bioleaching by an enriched microbial community in acidic artificial seawater
文献类型：期刊论文
| 作者 | Gu, Chen-yun5; Zhang, Rui-yong2,3,5; Xia, Jin-lan5; Liu, Hong-chang5; Sand, Wolfgang1,2,4; Wang, Yi-rong5; Chen, Lu5; Nie, Zhen-yuan5; Zhang, Yan-sheng5; Wang, Jun5 |
| 刊名 | JOURNAL OF CENTRAL SOUTH UNIVERSITY
 |
| 出版日期 | 2025-05-01 |
| 卷号 | 32期号:5页码:1802-1821 |
| 关键词 | bioleaching chalcopyrite acidification seawater microbial community |
| ISSN号 | 2095-2899 |
| DOI | 10.1007/s11771-025-5957-8 |
| 通讯作者 | Liu, Hong-chang(hchliu2050@csu.edu.cn) |
| 英文摘要 | The enhancement of chalcopyrite bioleaching with an enriched microbial community by acidified seawater was studied, and the enhancing mechanism was analyzed. The microbial community was enriched at the Dabaoshan mine site, and the treated ore sample had high concentrations of chalcopyrite and galena. The experimental results show that copper extraction from chalcopyrite with an enriched microbial community in seawater was promoted from 13.1% to 62.1% by acidification in comparison with that without acidification. Further analyses of the solutions, solid residues and microbial compositions by scanning electron microscopy, X-ray diffraction, Raman spectroscopy, Fourier transform infrared spectroscopy and 16S rDNA sequencing revealed the promoting effects of acidified seawater. This acidification can increase the biodissolution of chalcopyrite to increase the concentration of iron ions and maintain the redox potential in the range of 360-410 mV. The latter produces an optimal redox environment conducive to chalcopyrite dissolution via Cu2S. The adaptability of the microbial community to a high-salt environment is improved. Chloride ions at 580 mmol/L improve the leaching kinetics of chalcopyrite by increasing the porosity and noncrystallinity of the intermediate elemental sulfur. This study provides a promising way to bioleaching copper minerals using seawater for areas with freshwater shortages. |
| WOS关键词 | SULFUR-OXIDIZING BACTERIUM ; FERROUS-IONS ; SULFOBACILLUS-THERMOSULFIDOOXIDANS ; SODIUM-CHLORIDE ; OXIDATION ; CONCENTRATE ; GROWTH ; RAMAN ; EXTRACTION ; MECHANISM |
| 资助项目 | National Key Research and Development Program of China[2022YFC2105300] ; National Natural Science Foundation of China[51774342] ; National Natural Science Foundation of China[41802038] |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001510792000019 |
| 出版者 | JOURNAL OF CENTRAL SOUTH UNIV |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/202394]  |
| 专题 | 海洋研究所_海洋腐蚀与防护研究发展中心 |
| 通讯作者 | Liu, Hong-chang |
| 作者单位 | 1.Univ Duisburg Essen, Aquat Biotechnol, D-45141 Essen, Germany 2.Chinese Acad Sci, Inst Oceanol, State Key Lab Adv Marine Mat, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China 3.Guangxi Acad Sci, Inst Marine Corros Protect, Guangxi Key Lab Marine Environm Sci, Nanning 530007, Peoples R China 4.Univ Min & Technol, Inst Biosci, D-09599 Freiberg, Germany 5.Cent South Univ, Sch Minerals Proc & Bioengn, Key Lab Biomet, Minist Educ, Changsha 410083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gu, Chen-yun,Zhang, Rui-yong,Xia, Jin-lan,et al. Chalcopyrite bioleaching by an enriched microbial community in acidic artificial seawater[J]. JOURNAL OF CENTRAL SOUTH UNIVERSITY,2025,32(5):1802-1821. |
| APA | Gu, Chen-yun.,Zhang, Rui-yong.,Xia, Jin-lan.,Liu, Hong-chang.,Sand, Wolfgang.,...&Wang, Jun.(2025).Chalcopyrite bioleaching by an enriched microbial community in acidic artificial seawater.JOURNAL OF CENTRAL SOUTH UNIVERSITY,32(5),1802-1821. |
| MLA | Gu, Chen-yun,et al."Chalcopyrite bioleaching by an enriched microbial community in acidic artificial seawater".JOURNAL OF CENTRAL SOUTH UNIVERSITY 32.5(2025):1802-1821. |
入库方式： OAI收割
来源：海洋研究所
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