干旱区生态环境知识资源中心(Arid): Electrochemical Processes for the Treatment of Hazardous Wastes Exemplified by Electroplating Sludge Leaching Solutions

Arid

DOI	10.3390/w13111576
	Electrochemical Processes for the Treatment of Hazardous Wastes Exemplified by Electroplating Sludge Leaching Solutions
	Wu, Nan; Zhang, Xue; Zhang, Xuemin; Li, Yanjuan; Song, Xiaosan; Wang, Sanfan
通讯作者	Wu, N (corresponding author), Lanzhou Jiaotong Univ, Key Lab Yellow River Water Environm Gansu Prov, Lanzhou 730070, Peoples R China. ; Wu, N (corresponding author), Lanzhou Jiaotong Univ, Sch Environm & Municipal Engn, Lanzhou 730070, Peoples R China. ; Wu, N (corresponding author), Minist Educ, Engn Res Ctr Cold & Arid Reg Water Resource Compr, Lanzhou 730070, Peoples R China.
来源期刊	WATER
EISSN	2073-4441
出版年	2021
卷号	13 期号:11
英文摘要	The solidified landfill disposal of hazardous solid waste such as electroplating sludge in arid/semi-arid areas has potential risks and hazards. In this study, the electrochemical method was used to destroy the structures of metal complexes in electroplating sludge and release metal ions so that the organics were removed by direct mineralization in the anode while the metal was recovered in the cathode. A SnO2/Ti electrode was used as the anode during the electrolysis process. The effect of different current densities (10, 20, 30, 40, 50, 60 A/m(2)), different pH values (2, 3, 4, 5, 6), and the presence of chloride (0.1 or 0.2 M NaCl) and sulfate (0.1 or 0.2 M Na2SO4) on treatment were investigated. Under the optimal treatment conditions (current density = 50 A/m(2), pH = 3), the removal rates of CODCr, TOC, and Ni2+ reached 88.01%, 85.38%, and 97.57%, respectively, with a metal recovery of 97.01%. Further studies showed that active chlorine and active persulfate generated in the presence of chloride and sulfate had less effect on the removal of organics, while hydroxyl radicals played a major role. The dilution of the leachate would be detrimental to electrochemical treatment. The by-products of organic chlorination were produced in low amounts, mainly CHCl3. This method can be used to treat electroplating sludge in various areas to recover valuable metals while removing organic pollutants, complying with the concept of sustainable development. This method provides a new solution for the treatment of metal-containing hazardous solid waste such as electroplating sludge from the perspective of practical application.
英文关键词	arid semi-arid areas hazardous solid wastes electroplating sludge electrochemistry environmentally friendly disposal
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000660827800001
WOS关键词	MUNICIPAL SOLID-WASTE ; LANDFILL LEACHATE ; ORGANIC POLLUTANTS ; ADVANCED OXIDATION ; ANODIC-OXIDATION ; RHODAMINE-B ; WATER ; GROUNDWATER ; REMOVAL ; IDENTIFICATION
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351964
作者单位	[Wu, Nan; Zhang, Xuemin; Song, Xiaosan; Wang, Sanfan] Lanzhou Jiaotong Univ, Key Lab Yellow River Water Environm Gansu Prov, Lanzhou 730070, Peoples R China; [Wu, Nan; Zhang, Xuemin; Song, Xiaosan; Wang, Sanfan] Lanzhou Jiaotong Univ, Sch Environm & Municipal Engn, Lanzhou 730070, Peoples R China; [Wu, Nan; Zhang, Xuemin; Song, Xiaosan; Wang, Sanfan] Minist Educ, Engn Res Ctr Cold & Arid Reg Water Resource Compr, Lanzhou 730070, Peoples R China; [Zhang, Xue] Coll Northwest Normal Univ, Dept Environm Sci & Engn ZHIXING, Lanzhou 730070, Peoples R China; [Li, Yanjuan] Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Wu, Nan,Zhang, Xue,Zhang, Xuemin,et al. Electrochemical Processes for the Treatment of Hazardous Wastes Exemplified by Electroplating Sludge Leaching Solutions[J],2021,13(11).
APA	Wu, Nan,Zhang, Xue,Zhang, Xuemin,Li, Yanjuan,Song, Xiaosan,&Wang, Sanfan.(2021).Electrochemical Processes for the Treatment of Hazardous Wastes Exemplified by Electroplating Sludge Leaching Solutions.WATER,13(11).
MLA	Wu, Nan,et al."Electrochemical Processes for the Treatment of Hazardous Wastes Exemplified by Electroplating Sludge Leaching Solutions".WATER 13.11(2021).