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Pre-treatments of MSWI fly-ashes: a comprehensive review to determine optimal conditions for their reuse and/or environmentally sustainable disposal.
- Source :
- Reviews in Environmental Science & Biotechnology; Sep2019, Vol. 18 Issue 3, p453-471, 19p
- Publication Year :
- 2019
-
Abstract
- 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. [ABSTRACT FROM AUTHOR]
- Subjects :
- INCINERATION
WASTE recycling
SOLID waste
LEACHING
HEAVY metals
Subjects
Details
- Language :
- English
- ISSN :
- 15691705
- Volume :
- 18
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Reviews in Environmental Science & Biotechnology
- Publication Type :
- Academic Journal
- Accession number :
- 138110958
- Full Text :
- https://doi.org/10.1007/s11157-019-09504-1