Novel insights into the kinetics and mechanism of arsenopyrite bio-dissolution enhanced by pyrite
文献类型：期刊论文
| 作者 | Zhang, Duo-Rui6; Zhang, Rui-Yong2; Zhu, Xue-Tai6; Kong, Wei-Bao6; Cao, Chun3; Zheng, Lei4; Pakostova, Eva1,5 |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2024-05-15 |
| 卷号 | 470页码:13 |
| 关键词 | Arsenic Arsenopyrite Pyrite Acidithiobacillus ferrooxidans Bioleaching |
| ISSN号 | 0304-3894 |
| DOI | 10.1016/j.jhazmat.2024.134193 |
| 通讯作者 | Zhang, Duo-Rui(drzhang0327@nwnu.edu.cn) ; Zhu, Xue-Tai(zhuxuetai@nwnu.edu.cn) |
| 英文摘要 | Arsenopyrite and pyrite often coexist in metal deposits and tailings, thus simultaneous bioleaching of both sulfides has economic (as well as environmental) significance. Important targets in bio-oxidation operations are high solubilization rates and minimized accumulation of Fe(III)/As-bearing secondary products. This study investigated the role of pyrite bioleaching in the enhancement of arsenopyrite dissolution. At a pyrite to arsenopyrite mass ratio of 1:1, 93.6% of As and 93.0% of Fe were solubilized. The results show that pyrite biooxidation can promote arsenopyrite dissolution, enhance S 0 bio-oxidation, and inhibit the formation of jarosites, tooeleite, and amorphous ferric arsenate. The dry weight of the pyrite & arsenopyrite residue was reduced by 95.1% after bioleaching, compared to the initial load, while only 5% weight loss was observed when pyrite was absent. A biofilm was formed on the arsenopyrite surface in the presence of pyrite, while a dense passivation layer was observed in the absence of pyrite. As(III) (as As 2 O 3 ) was a dominant As species in the pyrite & arsenopyrite residue. Novel and detailed findings are presented on arsenopyrite bio-dissolution in the presence of pyrite, and the presented approach could contribute to the development of novel cost-effective extractive bioprocesses. Environmental Implication: The oxidation of arsenopyrite presents significant environmental hazards, as it can contribute to acid mine drainage generation and arsenic mobilization from sulfidic mine wastes. Bioleaching is a proven cost-effective and environmentally friendly extractive technology, which has been applied for decades in metal recovery from minerals or tailings. In this work, efficient extraction of arsenic from arsenopyrite bio- leaching was presented through coupling the process with bio-oxidation of pyrite, resulting in lowered accu- mulation of hazardous and metastable Fe(III)/As-bearing secondary phases. The results could help improve current biomining operations and/or contribute to the development of novel cost-effective bioprocesses for metal extraction. |
| WOS关键词 | OXIDATIVE DISSOLUTION ; FERRIC ARSENATE ; PROGRESS ; FUNDAMENTALS ; SPECIATION ; SCORODITE ; PROMOTES ; PART |
| 资助项目 | Key Laboratory of Resource Environment and Sustainable Development of Oasis, Gansu Province[GORS202304] ; National Natural Science Foundation of China[31770588] ; Open Funds of Beijing Synchrotron Radiation Facility[2023-BEPC-PT-008785] ; Open Funds of Beijing Synchrotron Radiation Facility[2023-BEFC-008836] |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001221901900001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/185787]  |
| 专题 | 海洋研究所_海洋腐蚀与防护研究发展中心 |
| 通讯作者 | Zhang, Duo-Rui; Zhu, Xue-Tai |
| 作者单位 | 1.Laurentian Univ, Goodman Sch Mines, 935 Ramsey Lake Rd, Sudbury, ON P3E 2C6, Canada 2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, 7 Nanhai Rd, Qingdao 266071, Peoples R China 3.Key Lab Resource Environm & Sustainable Dev Oasis, Lanzhou 730070, Gansu, Peoples R China 4.Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China 5.MIRARCO Min Innovat, 935 Ramsey Lake Rd, Sudbury, ON P3E 2C6, Canada 6.Northwest Normal Univ, Coll Life Sci, Lanzhou 730070, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Duo-Rui,Zhang, Rui-Yong,Zhu, Xue-Tai,et al. Novel insights into the kinetics and mechanism of arsenopyrite bio-dissolution enhanced by pyrite[J]. JOURNAL OF HAZARDOUS MATERIALS,2024,470:13. |
| APA | Zhang, Duo-Rui.,Zhang, Rui-Yong.,Zhu, Xue-Tai.,Kong, Wei-Bao.,Cao, Chun.,...&Pakostova, Eva.(2024).Novel insights into the kinetics and mechanism of arsenopyrite bio-dissolution enhanced by pyrite.JOURNAL OF HAZARDOUS MATERIALS,470,13. |
| MLA | Zhang, Duo-Rui,et al."Novel insights into the kinetics and mechanism of arsenopyrite bio-dissolution enhanced by pyrite".JOURNAL OF HAZARDOUS MATERIALS 470(2024):13. |
入库方式： OAI收割
来源：海洋研究所
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