Removal of Cl(- I) from strongly acidic wastewater using NaBiO3: A process of simultaneous oxidation and precipitation
文献类型：期刊论文
| 作者 | Dou, Wenyue; Hu, Xingyun ; Kong, Linghao; Peng, Xianjia; Wang, Xianliang
|
| 刊名 | DESALINATION
 |
| 出版日期 | 2020-10-01 |
| 卷号 | 491页码:1-9 |
| 关键词 | Strongly acidic wastewater Cl(- I) removal Cl center dot radicals NaBiO3 regeneration |
| ISSN号 | 0011-9164 |
| 英文摘要 | It was proposed to recycle strongly acidic wastewater generated from nonferrous smelting industries as diluted sulfuric acid after the contaminants being removed, however, Cl(- I) removal from strongly acidic wastewater remains a difficulty. In this work, a process of simultaneous oxidation and precipitation using NaBiO3 for Cl(- I) removal from strongly acidic wastewater was proposed, and 98.1% of Cl(- I) was efficiently removed at the stoichiometric NaBiO(3)dosage under 30 degrees C. The mechanism exploration indicated that Cl(- I) was removed in two ways. In the first way, Cl(- I) was oxidized to generate Cl-2: (1) NaBiO3 was dissolved, and the produced BiO3- oxidized Cl(- I) and OH- to Cl center dot and center dot OH, respectively; (2) center dot OH oxidized Cl(- I) to generate Cl-; and (3) Cl center dot combined to produce Cl-2. In the second way, Be3+, the reduced product of BiO3-, reacted with H2O and Cl (- I) to produce BiOCl precipitates. Additionally, through treatment by the NaOH absorption solution for Cl-2, almost all of BiOCl product was transformed to the regenerated NaBiO3, which was further employed in Cl(- I) removal. Finally, Cl( -I) was transferred from wastewater to the NaOH/NaCl1 concentrate. This study offered a theoretical foundation for the development of the method to remove Cl(- I) through oxidation. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/44987]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Dou, Wenyue,Hu, Xingyun,Kong, Linghao,et al. Removal of Cl(- I) from strongly acidic wastewater using NaBiO3: A process of simultaneous oxidation and precipitation[J]. DESALINATION,2020,491:1-9. |
| APA | Dou, Wenyue,Hu, Xingyun,Kong, Linghao,Peng, Xianjia,&Wang, Xianliang.(2020).Removal of Cl(- I) from strongly acidic wastewater using NaBiO3: A process of simultaneous oxidation and precipitation.DESALINATION,491,1-9. |
| MLA | Dou, Wenyue,et al."Removal of Cl(- I) from strongly acidic wastewater using NaBiO3: A process of simultaneous oxidation and precipitation".DESALINATION 491(2020):1-9. |
入库方式： OAI收割
来源：生态环境研究中心
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