Abstract：
:The management of the big amount of fly ash as hazardous waste from the municipal solid waste incinerator (MSWI) has encountered many problems in China. In this study, a feasibility research on MSWI fly ash utilization as partial cement substitute in cement mortars was therefore carried out. MSWI fly ash was subjected to washing process to reduce its chlorine content (from 10.16% to 1.28%). Consequently, it was used in cement mortars. Ten percent and 20% replacement of cement by washed ash showed acceptable strength properties. In TCLP and 180-day monolithic tests, the mortars with washed ash presented a little stronger heavy metal leachability, but this fell to the blank level (mortar without washed ash) with the addition of 0.25% chelate. Therefore, this method is proposed as an environment-friendly technology to achieve a satisfactory solution for MSWI fly ash management.
journal_name
J Environ Managejournal_title
Journal of environmental managementauthors
Gao X,Wang W,Ye T,Wang F,Lan Ydoi
10.1016/j.jenvman.2007.02.008subject
Has Abstractpub_date
2008-07-01 00:00:00pages
293-9issue
2eissn
0301-4797issn
1095-8630pii
S0301-4797(07)00084-9journal_volume
88pub_type
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