Removal of Chloride Ions from Strongly Acidic Wastewater Using Cu(0)/Cu(II): Efficiency Enhancement by UV Irradiation and the Mechanism for Chloride Ions Removal

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院饮用水科学与技术重点实验室

	Removal of Chloride Ions from Strongly Acidic Wastewater Using Cu(0)/Cu(II): Efficiency Enhancement by UV Irradiation and the Mechanism for Chloride Ions Removal
	Peng, Xianjia ; Dou, Wenyue ; Kong, Linghao ; Hu, Xingyun ; Wang, Xianliang
刊名	ENVIRONMENTAL SCIENCE & TECHNOLOGY
	2019
卷号	53 期号:1 页码:383-389
ISSN号	0013-936X
英文摘要	Strongly acidic wastewater, which is usually generated from nonferrous metal smelting industries, has the ability to be recycled as sulfuric acid. Before this wastewater is recycled, the removal of chloride ions is necessary to improve the quality of the recycled sulfuric acid. At present, the widely used method to remove chloride ions from acidic wastewater in the form of CuCl precipitate has several disadvantages, including low removal efficiency, high temperature, long treatment time, and high dosage of Cu(II). This study proposed an improved new method of removing Cl(-I) using Cu(0)/Cu(II) under UV irradiation, and the mechanism was investigated. The Cl(-I) concentration was lowered to below 50 mg/L at a Cu(II) dosage of 1200 mg/L. Under UV irradiation, ligand-to-metal charge transfer takes place, thereby resulting in the formation of Cl-center dot. Next, CuCI precipitates form through the reaction between Cu(0) and Cl-center dot and produce h(+)/(OH)-O-center dot under UV irradiation, which can oxidize Cl(-I) to Cl-center dot. Simultaneously, Cl-2 gas also forms directly from Cl-center dot. This study offered a theoretical foundation for the application of UV irradiation for the enhanced removal of chloride ions from strongly acidic wastewater.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43516]
专题	生态环境研究中心_中国科学院饮用水科学与技术重点实验室
作者单位	1.Chinese Acad Sci, Key Lab Drinking Water Sci & Technol, Beijing 100085, Peoples R China 2.Chinese Acad Sci, Beijing Key Lab Ind Wastewater Treatment & Resour, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Ctr Dis Control & Prevent, Natl Inst Environm Hlth, Beijing 100021, Peoples R China
推荐引用方式 GB/T 7714	Peng, Xianjia,Dou, Wenyue,Kong, Linghao,et al. Removal of Chloride Ions from Strongly Acidic Wastewater Using Cu(0)/Cu(II): Efficiency Enhancement by UV Irradiation and the Mechanism for Chloride Ions Removal[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2019,53(1):383-389.
APA	Peng, Xianjia,Dou, Wenyue,Kong, Linghao,Hu, Xingyun,&Wang, Xianliang.(2019).Removal of Chloride Ions from Strongly Acidic Wastewater Using Cu(0)/Cu(II): Efficiency Enhancement by UV Irradiation and the Mechanism for Chloride Ions Removal.ENVIRONMENTAL SCIENCE & TECHNOLOGY,53(1),383-389.
MLA	Peng, Xianjia,et al."Removal of Chloride Ions from Strongly Acidic Wastewater Using Cu(0)/Cu(II): Efficiency Enhancement by UV Irradiation and the Mechanism for Chloride Ions Removal".ENVIRONMENTAL SCIENCE & TECHNOLOGY 53.1(2019):383-389.