Chou, S.-Y.S.-Y.ChouLo, S.-L.S.-L.LoHsieh, C.-H.C.-H.HsiehChen, C.-L.C.-L.ChenSHANG-LIEN LO2020-02-252020-02-252009https://scholars.lib.ntu.edu.tw/handle/123456789/463402This study presents the sintering of municipal solid waste incineration (MSWI) fly ash assisted by microwave energy. The composition of fly ash was investigated by chemical sequential extraction and modified microwave digestion method. Effects of process time, container materials, aging time and salt contents were also discussed. The major elements of fly ash are Ca, Cl, Na, Si, K, Al, Mg, and Zn, and the metal species, Zn, Cr, Pb, Ca, and Cu, are mainly in the oxide phase. Under microwave processing, the fly ash was sintered into a glass-ceramics and the leaching concentrations of heavy metals were restrained. The stabilization efficiency increased with an increase in processing time in most of the cases. Better stabilization efficiency of fly ash was discovered by using the SiO2 or Al2O3 container than by using the graphite plate/SiC plate. The presence of salt in the fly ash could enhance the sintering and stabilization of fly ash. During the aging time of 0-30 days, negligible Pb in the sintered fly ash was leached out, and the leaching concentration was lower than the criterion. © 2008 Elsevier B.V. All rights reserved.Microwave energy; MSWI fly ash; Sinter[SDGs]SDG11[SDGs]SDG12Aging times; In processing; Leaching concentrations; Major elements; Metal species; Microwave digestion methods; Microwave energy; Microwave processing; MSWI fly ash; Municipal Solid wastes; Process times; Salt contents; Sequential extractions; Calcium; Chromium; Copper; Energy conversion; Fly ash; Glass ceramics; Graphite; Heavy metals; Incineration; Leaching; Lead; Lead alloys; Metal recovery; Microwaves; Silicon compounds; Sintering; Solid wastes; Stabilization; Wastewater treatment; Zinc; Waste incineration; alkali metal; alkaline earth metal; aluminum oxide; ceramics; extraction method; fly ash; graphite; heavy metal; incineration; municipal solid waste; silicon; stabilization; Carbon; Metals, Heavy; Microwaves; Particulate Matter; Sewage; Solubility; X-Ray Diffractionjournal article10.1016/j.jhazmat.2008.06.1002-s2.0-58249137669https://www.scopus.com/inward/record.uri?eid=2-s2.0-58249137669&doi=10.1016%2fj.jhazmat.2008.06.100&partnerID=40&md5=5cc5dd11fb8863e779b69a2e3952fe60