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