Treatment of municipal solid waste incineration fly ash: State-of-the-art technologies and future perspectives

Yuying Zhang; Lei Wang; Liang Chen; Bin Ma; Yike Zhang; Wen Ni; Daniel C W Tsang

doi:10.1016/j.jhazmat.2021.125132

Treatment of municipal solid waste incineration fly ash: State-of-the-art technologies and future perspectives

J Hazard Mater. 2021 Jun 5:411:125132. doi: 10.1016/j.jhazmat.2021.125132. Epub 2021 Jan 14.

Authors

Yuying Zhang¹, Lei Wang², Liang Chen¹, Bin Ma³, Yike Zhang⁴, Wen Ni⁵, Daniel C W Tsang⁶

Affiliations

¹ Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
² Institute of Construction Materials, Technische Universität Dresden, 01062 Dresden, Germany. Electronic address: lei.wang1@mailbox.tu-dresden.de.
³ Laboratory for Concrete & Construction Chemistry, Swiss Federal Laboratories for Materials Science and Technology (Empa), 8600 Dübendorf, Switzerland.
⁴ State Key Laboratory of Energy Clean Utilization, Zhejiang University, Hangzhou 310027, China.
⁵ School of Civil and Resource Engineering, University of Science and Technology Beijing, 100083, China.
⁶ Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China. Electronic address: dan.tsang@polyu.edu.hk.

PMID: 33858099
DOI: 10.1016/j.jhazmat.2021.125132

Abstract

Municipal solid waste incineration (MSWI) fly ash is considered as a hazardous waste that requires specific treatment before disposal. The principal treatments encompass thermal treatment, stabilization/solidification, and resource recovery. To maximize environmental, social, and economic benefits, the development of low-carbon and sustainable treatment technologies for MSWI fly ash has attracted extensive interests in recent years. This paper critically reviewed the state-of-the-art treatment technologies and novel resource utilization approaches for the MSWI fly ash. Innovative technologies and future perspectives of MSWI fly ash management were highlighted. Moreover, the latest understanding of immobilization mechanisms and the use of advanced characterization technologies were elaborated to foster future design of treatment technologies and the actualization of sustainable management for MSWI fly ash.

Keywords: Hazardous waste treatment; Immobilization mechanisms; Potentially toxic elements; Resource recovery; Stabilization/solidification; Sustainable waste management.

Publication types

Review
Research Support, Non-U.S. Gov't