Journal
ENVIRONMENTAL TECHNOLOGY
Volume 41, Issue 9, Pages 1199-1208Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/09593330.2018.1525434
Keywords
MSWI fly ash; clinkerisation; clinker; environmental impact; leaching test
Categories
Funding
- Marcus Invest company
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Municipal solid waste incineration (MSWI) fly ashes are hazardous waste since they contain organic pollutants, heavy metals and an important amount of various soluble salts. However their chemical composition is interesting for their valorization in cement production. The objective of this paper is to assess the possibility of MSWI fly ashes reuse as cement raw meal, after pre-treatment, at a laboratory scale. The environmental impact has also been studied (analyses of the metals, of dioxins and furans and leaching tests on clinker produced). Experimental results show that the replacement of MSWI fly ash could be taken up to 30% in the raw mixes, according to the chemical composition of the MSWI fly ashes. This substitution is also to be refined according to the content of hazardous elements contents. This study also shows that the pre-treatment must be well carried out in order to limit the alkaline contents which may affect the quality of the cementitious phases.
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