Stabilization of nickel and chromium in sewage sludge during aerobic composting
文献类型：SCI/SSCI论文
| 作者 | Gao D. |
| 发表日期 | 2007 |
| 关键词 | composting heavy metal sewage sludge speciation stabilization municipal solid-waste heavy-metals sequential extraction clay amendment trace-metals speciation soils removal zn cd |
| 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. (c) 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 | SCI |
| 语种 | 英语 |
| ISSN号 | 0304-3894 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/22269]  |
| 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 | Gao D.. 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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