Effect of water-washing on the co-removal of chlorine and heavy metals   in air pollution control residue from MSW incineration

doi:10.1016/j.wasman.2017.06.039

CORC > 北京大学 > 工学院

	Effect of water-washing on the co-removal of chlorine and heavy metals in air pollution control residue from MSW incineration
	Yang, Zhenzhou ; Tian, Sicong ; Ji, Ru ; Liu, Lili ; Wang, Xidong ; Zhang, Zuotai
刊名	WASTE MANAGEMENT
	2017
关键词	APC residue Water washing Chloride Heavy metal Kinetic study MUNICIPAL SOLID-WASTE FLY-ASH LEACHING CHARACTERISTICS STABILIZATION EXTRACTION BOTTOM IMMOBILIZATION CARBONATION AGGREGATE KINETICS
DOI	10.1016/j.wasman.2017.06.039
英文摘要	The present study systemically investigated the effect of a water-washing process on the removal of harmful chlorides, sulfates, and heavy metals in the air pollution control (APC) residue from municipal solid wastes incineration (MSWI), for sake of a better reuse and disposal of this kind of waste. In addition, the kinetic study was conducted to reveal the releasing mechanism of relevant element in the residue. The results show that, over 70 wt.% of chlorides and nearly 25 wt.% of sulfates in the residue could be removed by water washing. Based on an economical consideration, the optimal operation conditions for water washing of APC residue was at liquid/solid (L/S) ratio of 3 mL:1 g and extracting time of 5 min. As expected, the concentrations of Co, Cr, Fe, Ni, V and Cu in the washing effluent increased with time during the washing process. However, the extracting regime differs among different heavy metals. The concentrations of Ba and Mn increased firstly but declined afterwards, and concentrations of Pb and Zn gradually declined while Cd and As kept constant with the increase of extracting time. It is worth mentioning that the bubbling of CO2 into the washing effluent is promisingly effective for a further removal of Pb, Cu and Zn. Furthermore, kinetic study of the water washing process reveals that the extracting of heavy metals during water washing follows a second-order model. (C) 2017 Elsevier Ltd. All rights reserved.; National Science Fund for Distinguished Young Scholars [51522401]; National Natural Science Foundation of China [51472007]; Shenzhen Science and Technology Innovation Committee [ZDSYS201602261932201]; SCI(E); ARTICLE; 221-231; 68
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/484799]
专题	工学院
推荐引用方式 GB/T 7714	Yang, Zhenzhou,Tian, Sicong,Ji, Ru,et al. Effect of water-washing on the co-removal of chlorine and heavy metals in air pollution control residue from MSW incineration[J]. WASTE MANAGEMENT,2017.
APA	Yang, Zhenzhou,Tian, Sicong,Ji, Ru,Liu, Lili,Wang, Xidong,&Zhang, Zuotai.(2017).Effect of water-washing on the co-removal of chlorine and heavy metals in air pollution control residue from MSW incineration.WASTE MANAGEMENT.
MLA	Yang, Zhenzhou,et al."Effect of water-washing on the co-removal of chlorine and heavy metals in air pollution control residue from MSW incineration".WASTE MANAGEMENT (2017).