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

Yang, Zhenzhou1,2; Tian, Sicong3,4; Ji, Ru5; Liu, Lili1,2; Wang, Xidong1,2; Zhang, Zuotai3

2017-10

10.1016/j.wasman.2017.06.039

WASTE MANAGEMENT   影响因子和分区

0956-053X

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.

APC residue Water washing Chloride Heavy metal Kinetic study

SCI ; EI

英语

通讯

Shenzhen Science and Technology Innovation Committee[ZDSYS201602261932201]

Engineering ; Environmental Sciences & Ecology

Engineering, Environmental ; Environmental Sciences

WOS:000413126300024

PERGAMON-ELSEVIER SCIENCE LTD

20172603846298

Air pollution ; Air pollution control ; Chlorine ; Chlorine compounds ; Copper ; Effluents ; Extraction ; Heavy metals ; Kinetic theory ; Kinetics ; Municipal solid waste ; Sulfur compounds ; Washing ; Waste disposal ; Waste incineration ; Water conservation ; Water pollution ; Water pollution control

Water Resources:444 ; Air Pollution:451 ; Air Pollution Control:451.2 ; Municipal and Industrial Wastes; Waste Treatment and Disposal:452 ; Water Pollution:453 ; Water Pollution Control:453.2 ; Metallurgy and Metallography:531 ; Copper:544.1 ; Chemical Operations:802.3 ; Chemical Products Generally:804 ; Classical Physics; Quantum Theory; Relativity:931

ENGINEERING

Web of Science

1.Peking Univ, Beijing Key Lab Solid Waste Utilizat & Management, Beijing 100871, Peoples R China
2.Peking Univ, Dept Energy & Resource Engn, Coll Engn, Beijing 100871, Peoples R China
3.Southern Univ Sci & Technol China, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China
4.Tsinghua Univ, Sch Environm, Beijing 100084, Peoples R China
5.Univ Sci & Technol Beijing, Sch Civil & Environm Engn, Beijing 100083, Peoples R China

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,2017,68:221-231.

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,68,221-231.

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 68(2017):221-231.