Advantage of solvothermal procedure for polychlorinated biphenyls removal from e-waste contaminated site
文献类型：期刊论文
| 作者 | Zhang, Cong-Cong ; Zhu, Neng-min ; Zhang, Fu-Shen |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2011-12-15 |
| 卷号 | 178期号:*页码:93—99 |
| 中文摘要 | Polychlorinated biphenyls (PCBs) are environmentally persistent, toxic, bioaccumulative and recalcitrant. In this study, aged PCBs from e-waste contaminated site were respectively subjected to Soxhlet and solvothermal treatments. The results indicated that solvothermal method was much more predominant for PCBs removal than traditional Soxhlet method. Sequential Soxhlet-solvothermal experiment demonstrated that Soxhlet unextractable (bound) PCBs were efficiently removed by solvothermal procedure due to enhanced solvating effects of organic solvents. The key point was that bound PCBs in the aged soil were partitioned in different components of soil organic matter, e.g., the solvothermal removal amounts of Sigma(I-V)PCBs (sum of PCB8, PCB18, PCB28, PCB44. PCB66) from fulvic acid (FA), humic acid (HA), bound humic acid (bound HA), bound lipids and mineral fraction were 0.4, 40.8, 28.4, 19.8, and 10.6%, respectively. It was found that isopropanol was the most effective solvent for PCBs removal. The optimum performing temperature, time and liquid to solid ratio for PCB8, PCB18, PCB28, PCB44, and PCB66 were 170 degrees C, 8 h and 10:1, respectively. As for higher molecular weight PCB congeners, these conditions were 150 degrees C, 10 h and 15:1. Soil organic matter content was unchanged after solvothermal treatment indicating that soil fertility remained after the removal process. This work provides a more clean process for effective treatment of soils contaminated by persistent organic pollutants (POPs) in comparison to traditional methods. (C) 2011 Elsevier B.V. All rights reserved. |
| WOS记录号 | WOS:000299025500012 |
| 公开日期 | 2012-10-15 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/6958]  |
| 专题 | 生态环境研究中心_环境纳米材料实验室 |
| 推荐引用方式 GB/T 7714 | Zhang, Cong-Cong,Zhu, Neng-min,Zhang, Fu-Shen. Advantage of solvothermal procedure for polychlorinated biphenyls removal from e-waste contaminated site[J]. CHEMICAL ENGINEERING JOURNAL,2011,178(*):93—99. |
| APA | Zhang, Cong-Cong,Zhu, Neng-min,&Zhang, Fu-Shen.(2011).Advantage of solvothermal procedure for polychlorinated biphenyls removal from e-waste contaminated site.CHEMICAL ENGINEERING JOURNAL,178(*),93—99. |
| MLA | Zhang, Cong-Cong,et al."Advantage of solvothermal procedure for polychlorinated biphenyls removal from e-waste contaminated site".CHEMICAL ENGINEERING JOURNAL 178.*(2011):93—99. |
入库方式： OAI收割
来源：生态环境研究中心
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