Solidification/stabilization and risk assessment of heavy metals in municipal solid waste incineration fly ash: A review

被引:57
作者
Zhang, Ze [1 ]
Zhao, Chutong [1 ]
Rao, Yi [2 ]
Yu, Chunjiang [2 ]
Luo, Zhongli [3 ]
Zhao, Hongjun [1 ]
Wang, Xiaona [1 ,4 ,5 ]
Wu, Chuanfu [1 ,5 ]
Wang, Qunhui [1 ]
机构
[1] Univ Sci & Technol Beijing, Sch Energy & Environm Engineer, 30 Xueyuan Rd, Beijing 100083, Peoples R China
[2] Chengdu Xingrong Renewable Energy Co Ltd, Chengdu 610000, Peoples R China
[3] Tosoh Corp, Organ Mat Res Lab, Shunan 7468501, Japan
[4] Univ Sci & Technol Beijing, Shunde Innovat Sch, Beijing, Peoples R China
[5] Univ Sci & Technol Beijing, Dept Environm Engn, Beijing 100083, Peoples R China
关键词
MSWI FA; Solidi fication; stabilization; Heavy metals; Environmental risk assessment; MSWI BOTTOM ASH; LEACHING BEHAVIOR; ECOLOGICAL RISK; CHEMICAL STABILIZATION; CEMENT SOLIDIFICATION; POLLUTION-CONTROL; ORGANIC-MATTER; TRACE-ELEMENTS; RED MUD; EXTRACTION;
D O I
10.1016/j.scitotenv.2023.164451
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Incineration is currently the most common method of treating municipal solid waste. Municipal solid waste incineration fly ash (MSWI FA) contains a high concentration of toxic heavy metals (HMs), making it a hazardous waste. A series of detoxification treatments are required to reduce the toxicity of fly ash. Furthermore, the environmental risk of MSWI FA after treatment is becoming a cause of concern. This paper reviews the primary ash properties, pH, liquidsolid ratio, and other factors (microorganism, type of leaching agents, etc.) that affect the leaching of HMs from MSWI FA, compares and summarizes the most widely applied solidification/stabilization (S/S) techniques. In particular, models and methods for the environmental risk assessment and prediction of HMs are classified and described in detail. Finally, the inadequacy of current S/S techniques for MSWI FA is pointed out, which may be useful for upcoming studies on this topic.
引用
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页数:19
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