Removal of cyanide adsorbed on pyrite by H2O2 oxidation under alkaline conditions
文献类型：期刊论文
| 作者 | Tu, Yubo1,2; Han, Peiwei1; Wei, Lianqi1; Zhang, Xiaomeng1; Yu, Bo1,2; Qian, Peng1; Ye, Shufeng1 |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
 |
| 出版日期 | 2019-04-01 |
| 卷号 | 78页码:287-292 |
| 关键词 | Cyanide removal Pyrite H2O2 oxidation Alkaline conditions |
| ISSN号 | 1001-0742 |
| DOI | 10.1016/j.jes.2018.10.013 |
| 英文摘要 | Large amounts of cyanide tailings are produced during the cyanidation process in gold extraction, which are hazardous solid wastes due to the toxic cyanide. Pyrite is one of the main minerals in cyanide tailings. The removal of cyanide adsorbed on pyrite by H2O2 oxidation under alkaline conditions was investigated in this study. It was found that the removal efficiency was positively correlated with pH from 5 to 12, but remained almost constant when pH was higher than 12. The highest cyanide removal efficiency of 91.10% was achieved by adding no less than 0.6 wt.% of H2O2. Cyanide removal was positively correlated with the CN-adsorption amount between 1.06 and 8.5 mg/g, and temperature between 25 and 85 degrees C. The removal of cyanide adsorbed on pyrite by H2O2 oxidation under alkaline conditions was due to the oxidation of pyrite. Hexacyanoferrate, thiocyanate and sulfate were generated with mole ratios of about 2.03: 1.12: 3.17 during the cyanide removal. (c) 2018 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| WOS关键词 | XANTHATE ; OXYGEN |
| 资助项目 | National Key Research and Development Program of China[2017YFC0703200] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000463377700027 |
| 出版者 | SCIENCE PRESS |
| 资助机构 | National Key Research and Development Program of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/28266]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Ye, Shufeng |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tu, Yubo,Han, Peiwei,Wei, Lianqi,et al. Removal of cyanide adsorbed on pyrite by H2O2 oxidation under alkaline conditions[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2019,78:287-292. |
| APA | Tu, Yubo.,Han, Peiwei.,Wei, Lianqi.,Zhang, Xiaomeng.,Yu, Bo.,...&Ye, Shufeng.(2019).Removal of cyanide adsorbed on pyrite by H2O2 oxidation under alkaline conditions.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,78,287-292. |
| MLA | Tu, Yubo,et al."Removal of cyanide adsorbed on pyrite by H2O2 oxidation under alkaline conditions".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 78(2019):287-292. |
入库方式： OAI收割
来源：过程工程研究所
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