A study on the chemical and mineralogical characterization of MSWI fly ash using a sequential extraction procedure

被引：145

作者：

Wan, Xiao ^{[1
]}

Wang, Wei ^{[1
]}

Ye, Tunmin ^{[1
]}

Guo, Yuwen ^{[1
]}

Gao, Xingbao ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Environm Sci & Engn, Beijing 100084, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2006年 / 134卷 / 1-3期

基金：

中国国家自然科学基金;

关键词：

fly ash; mineralogical species; heavy metal; leaching; XRD; MSWI;

D O I：

10.1016/j.jhazmat.2005.10.048

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The presence of heavy metals in municipal solid waste incineration (MSWI) fly ash is of environmental concern due to their leaching potential in landfill environments. Sequential chemical extraction was performed on fly ash samples from a large-scale municipal solid waste incineration plant in East China. The transformation of the mineralogical species of fly ash during the sequential extraction was studied using X-ray fluorescence (XR-F) and X-ray powder diffraction (XRD). The leaching behavior of heavy metals such as zinc, lead, cadmium and copper in MSWI fly ash was considered to have a dependency relationship with the components of calcium, such as aphthitalite, calcite, anhydrite and calcium aluminate or calcium aluminosilicate. (c) 2004 Elsevier B.V. All rights reserved.

引用

页码：197 / 201

页数：5

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