Removal of Cl(-I) from strongly acidic wastewater containing Cu(II) by complexation-precipitation using thiourea: Efficiency enhancement by ascorbic acid
文献类型：期刊论文
| 作者 | Guo, Panpan; Kong, Linghao ; Hu, Xingyun; Peng, Xianjia; Wang, Xianliang
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| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2021-01-15 |
| 卷号 | 402页码:- |
| 关键词 | Strongly acidic wastewater Cl(-I) removal Complexation-Precipitation |
| ISSN号 | 0304-3894 |
| 英文摘要 | Strongly acidic wastewater produced by copper smelting industries contains high concentrations of Cl(-I), Cu(II) and H2SO4. The common method for the treatment of this type of wastewater is neutralization, which produces large amounts of solid waste. To avoid the production of solid waste, it was proposed to selectively remove contaminants and then recycle the wastewater as diluted sulfuric acid. This study proposed a new complexation-precipitation method to effectively remove Cl(-I) using thiourea (TU) under the promotion of ascorbic acid (AC). The Cl(-I) removal efficiency was optimized, important effecting factors were investigated and the mechanisms of the AC-improved removal of Cl(-I) were studied. The results showed that, Cl(-I) removal efficiency reached 87.4 % under a TU/AC/Cl(-I) mole ratio of 1:3:1 and the residual Cl(-I) concentration was lowered from 1000 mg/L to 126.4 mg/L. The mechanism investigation showed that, AC first reduces Cu(II) to Cu(I), then, the produced Cu(I) is quickly complexed by TU to form the [Cu(I)(x)(TU)(y)](x+); finally, [Cu(I)(x)(TU)(y)](x+) precipitates with Cl(-I) in the form of [Cu(I)(x)(TU)(y)]Cl-x. This study provided a theoretical foundation of complexation-precipitation of Cl(-I) under strongly conditions and developed an effective method for removal of Cl(-I) from strongly acid waster. |
| WOS研究方向 | Engineering, Environmental ; Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45990]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing Key Lab Ind Wastewater Treatment & Resour, Beijing 100085, Peoples R China 2.Chinese Ctr Dis Control & Prevent, Natl Inst Environm Hlth, Beijing 100021, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Panpan,Kong, Linghao,Hu, Xingyun,et al. Removal of Cl(-I) from strongly acidic wastewater containing Cu(II) by complexation-precipitation using thiourea: Efficiency enhancement by ascorbic acid[J]. JOURNAL OF HAZARDOUS MATERIALS,2021,402:-. |
| APA | Guo, Panpan,Kong, Linghao,Hu, Xingyun,Peng, Xianjia,&Wang, Xianliang.(2021).Removal of Cl(-I) from strongly acidic wastewater containing Cu(II) by complexation-precipitation using thiourea: Efficiency enhancement by ascorbic acid.JOURNAL OF HAZARDOUS MATERIALS,402,-. |
| MLA | Guo, Panpan,et al."Removal of Cl(-I) from strongly acidic wastewater containing Cu(II) by complexation-precipitation using thiourea: Efficiency enhancement by ascorbic acid".JOURNAL OF HAZARDOUS MATERIALS 402(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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