Remediation of chromite ore processing residue by pyrolysis process with sewage sludge

被引：21
|
作者：
Zhang, Dalei [1 ]
Kong, Hainan [1 ]
Wu, Deyi [1 ]
He, Shengbing [1 ]
Hu, Zhanbo [1 ,2 ]
Hu, Xiaofang [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Sch Environm Sci & Engn, Shanghai 200240, Peoples R China
[2] Guangxi Univ, Sch Environm Studies, Nanning 530004, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2009年 / 100卷 / 11期
关键词：
Pyrolysis; COPR; Sewage sludge; Reduction; DEHYDROGENATION; CATALYSTS; DISPOSAL;
D O I：
10.1016/j.biortech.2009.01.003
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
The present work developed a novel technique to treat chromite ore processing residue (COPR). The process involved mixing the COPR with sewage sludge followed by pyrolysis. The gaseous organic fraction generated during pyrolysis of sludge was beneficial to Cr(VI) reduction. Process variables, such as the amount of sludge added to COPR (sludge-to-COPR (S/C) ratio), heating temperature, reaction time and particle size, were systematically varied, and their influences on the Cr(VI) reduction in COPR were investigated. Cr(VI) content had decreased greatly. from 3384 mg kg(-1) for untreated COPR to less than 30 mg kg(-1) for COPR treated at 600 degrees C. (c) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2874 / 2877
页数：4
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