Characterization of naturally aged cement-solidified MSWI fly ash.

Bing Du,Jiantao Li,Wen Fang,Yili Liu,Shuyao Yu,Yu Li,Jianguo Liu

Waste Management（2018）

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摘要

•We characterized the cement-solidified FA after 6 years of natural aging (FA-6).•The leaching concentration of lead in FA-6 exceeds the landfill thresholds.•We determined the distribution of heavy metal in minerals and non-minerals in FA-6.•The carbonates, HFO, DOC in FA-6 influence the chemical speciation of heavy metals.•Pb5(PO4)3Cl and Pb2(OH)3Cl were the major phase controlling the lead leaching.

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关键词

Municipal solid waste incineration fly ash (MSWI-FA),Solidification,PH-dependent,Geochemical model,Long-term stability

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