标题:Characteristics of the stabilized/solidified municipal solid wastes incineration fly ash and the leaching behavior of Cr and Pb作者:Shao, Yan; Hou, Haobo; Wang, Guangxing; Wan, Sha; Zhou, Min
来源出版物:FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING 卷:10 期:1 页:192-200 DOI:10.1007/s11783-014-0719-0 出版年:FEB 2016
摘要:Fly ash is a hazardous byproduct of municipal solid wastes incineration (MSWI). An alkali activated blast furnace slag-based cementitious material was used to stabilize/solidify the fly ash at experimental level. The characteristics of the stabilized/solidified fly ash, including metal leachability, mineralogical characteristics and the distributions of metals in matrices, were tested by toxic characteristic leaching procedure (TCLP), X-ray diffraction (XRD) and scanning electron microscopy-energy dispersive spectrometer (SEM-EDS) respectively. Continuous acid extraction was utilized to extract metal ions and characterize their leaching behavior. The stabilization/ solidification procedure for MSWI fly ash demonstrates a strong fixing capacity for the metals by the formation of CS-H phase, hydrated calcium aluminosilicate and ettringite. The stabilized/solidified fly ash shows a dense and homogeneous microstructure. Cr is mainly solidified in hydrated calcium aluminosilicate, C-S-H and ettringite phase through physical encapsulation, precipitation, adsorption or substitution mechanisms, and Pb is mainly solidified in C-S-H phase and absorbed in the Si-O structure.
入藏号:WOS:000365804800021
文献类型:Article
语种:English
作者关键词:municipal solid waste incineration (MSWI) fly ash, blast furnace slag, leaching behavior, Cr, Pb
扩展关键词:SOLIDIFICATION; RESIDUES; SLAG
通讯作者地址:Zhou, Min;Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Peoples R China.
电子邮件地址:34318989@qq.com
地址:
[Shao, Yan; Hou, Haobo; Wan, Sha; Zhou, Min] Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Peoples R China.
[Wang, Guangxing] Wuhan Univ, GNSS Res Ctr, Wuhan 430072, Peoples R China.
研究方向:Engineering; Environmental Sciences & Ecology
ISSN:2095-2201
eISSN:2095-221X
影响因子(2014):1.357
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