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Stabilization of nickel and chromium in sewage sludge during aerobic composting

文献类型：EI期刊论文

作者Zheng Guo-Di; Chen Tong-Bin; Gao Ding
发表日期2007
关键词Composting Concentration (process) Extraction Sewage sludge
英文摘要The speciation of heavy metals can play a major role in the toxicity of those metals in sewage sludge following land application. Tessier sequential extraction was used to investigate the changes in Ni and Cr speciation in sewage sludge treated by forced-aeration composting. Ni and Cr concentrations increased 30.4% and 36.0%, respectively, during the composting process, with H2O and CO2 volatilization being a major contributor to the change. It was found that the exchangeable, carbonate-bound, Fe-Mn oxide-bound, and organic matter-bound Ni and Cr were transformed to residual fractions. For Cr, the carbonate-bound, Fe-Mn oxide-bound, and organic matter-bound fractions were major contributors, while organic matter-bound Ni was a major contributor to the residual fraction. Composting appeared to reduce Ni and Cr availability by stabilizing the two metals and making them more stable and less mobile. © 2006 Elsevier B.V. All rights reserved.
出处Journal of Hazardous Materials
卷142期:1-2页:216-221
收录类别EI
语种英语
源URL[http://ir.igsnrr.ac.cn/handle/311030/24353]  
专题地理科学与资源研究所_历年回溯文献
推荐引用方式
GB/T 7714		 Zheng Guo-Di,Chen Tong-Bin,Gao Ding. Stabilization of nickel and chromium in sewage sludge during aerobic composting. 2007.

入库方式： OAI收割

来源：地理科学与资源研究所

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