Clean and effective removal of Cl(-I) from strongly acidic wastewater by PbO2
文献类型：期刊论文
| 作者 | Zhao, Jinmin ; Kong, Linghao; Hu, Xingyun; Peng, Xianjia
|
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES
 |
| 出版日期 | 2022 |
| 卷号 | 120页码:1-8 |
| 关键词 | Cl(-I) removal Strongly acidic wastewater Cl center dot radicals center dot OH radicals PbO2 regeneration |
| ISSN号 | 1001-0742 |
| 英文摘要 | Recycling strongly acidic wastewater as diluted H2SO4 after contaminants contained being removed was previously proposed, however, Cl(-I), a kind of contaminant contained in strongly acidic wastewater, is difficult to remove, which severely degrades the quality of recycled H2SO4. In this study, the removal of Cl(-I) using PbO2 was investigated and the involved mechanisms were explored. The removal efficiency of Cl(-I) reached 93.38% at 50 degrees C when PbO2/Cl(-I) mole ratio reached 2:1. The identification of reaction products shows that Cl(-I) was oxidized to Cl-2, and PbO2 was reduced to PbSO4. Cl-2 was absorbed by NaOH to form NaClO, which was used for the regeneration of PbO2 from the generated PbSO4 . Cl(-I) was removed through two pathways, i.e., surface oxidation and center dot OH radical oxidation. center dot OH generated by the reaction of PbO2 and OH- plays an important role in Cl(-I) removal. The regenerated PbO2 had excellent performance to remove Cl(-I) after six-time regeneration. This study provided an in-depth understanding on the effective removal of Cl(-I) by the oxidation method. (C) 2022 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/48534]  |
| 专题 | 生态环境研究中心_水污染控制实验室 |
| 作者单位 | 1.Research Center for Eco-Environmental Sciences (RCEES) 2.Chinese Academy of Sciences 3.University of Chinese Academy of Sciences, CAS |
| 推荐引用方式 GB/T 7714 | Zhao, Jinmin,Kong, Linghao,Hu, Xingyun,et al. Clean and effective removal of Cl(-I) from strongly acidic wastewater by PbO2[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2022,120:1-8. |
| APA | Zhao, Jinmin,Kong, Linghao,Hu, Xingyun,&Peng, Xianjia.(2022).Clean and effective removal of Cl(-I) from strongly acidic wastewater by PbO2.JOURNAL OF ENVIRONMENTAL SCIENCES,120,1-8. |
| MLA | Zhao, Jinmin,et al."Clean and effective removal of Cl(-I) from strongly acidic wastewater by PbO2".JOURNAL OF ENVIRONMENTAL SCIENCES 120(2022):1-8. |
入库方式： OAI收割
来源：生态环境研究中心
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