期刊
REVIEWS IN ENVIRONMENTAL SCIENCE AND BIO-TECHNOLOGY
卷 18, 期 3, 页码 453-471出版社
SPRINGER
DOI: 10.1007/s11157-019-09504-1
关键词
MSWI fly-ash; Washing; leaching pre-treatment; Electrodialytic remediation; Thermal treatment; Soluble salts removal; Heavy metals recovery
资金
- Italian Ministry of Education, University and Research (MIUR) [CUP E65D18000820006]
The present work aims to provide a comprehensive review of the experimental studies focusing on municipal solid waste incineration fly-ash (FA) treatments that are required before the application of advanced processes aimed at their final reuse or safe disposal. The investigated pre-treatments are divided into three categories: (1) water washing/chemical leaching; (2) electrodialysis; and (3) thermal separation. Analysed aspects include: (1) process efficiency; (2) effect on FA physical-chemical characteristics; and (3) process applicability as a function of secondary FA treatment steps which are generally required for final disposal or reuse of the remediated waste. Investigations related to these elements allows a determination of the efficacy and the operational convenience of a specific pre-treatment to achieve a proper FA remediation level. A comparison of studies in the literature provides a thorough source and a useful basis for correctly addressing future experimental activities and research efforts. The discussion of the results provides the basis for the development of a suitable methodology to optimize the environmentally sustainable reuse or safer disposal of treated FA.
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