Fraction Distribution Changes of Heavy Metals in Co-pyrolysis of Sewage Sludge and Corn Straw

被引：2

作者：

Zhang Qiu-rong ^{[1
]}

Zhang Shuang-quan ^{[1
]}

Pan Ting-ting ^{[1
]}

机构：

[1] China Univ Min & Technol, Key Lab Coal Proc & Efficient Utilizat, Xuzhou 221116, Jiangsu, Peoples R China

来源：

APPLICATION OF CHEMICAL ENGINEERING, PTS 1-3 | 2011年 / 236-238卷

关键词：

Sewage Sludge; Corn Straw; Carbon Residue; Heavy Metal; Pyrolysis; Fraction Distribution; SEQUENTIAL EXTRACTION PROCEDURE; SPECIATION; SOILS;

D O I：

10.4028/www.scientific.net/AMR.236-238.187

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Maiz's short sequential extraction procedure was used to extract the heavy metals in the carbon residues made from sewage sludge by co-pyrolysis with corn straw. The content of heavy metals in the residues was determined by ICP-MS to study the fraction distribution changes of heavy metals. It is concluded that the content of mobile and mobilization heavy metals exsisted in the residue decrease and the content of residual heavy metals increase due to the co-pyrolysis. The co-pyrolysis temperature has great effect on the fraction distribution changes of heavy metals. The content of residual fraction for Cr, Ni, Pb is up to the top at 700 degrees C and for Cd,Cu,Zn is at 500 degrees C. The carbon residues are unhazardous and safe.

引用

页码：187 / 191

页数：5

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