Removal of persistent organic pollutants from micro-polluted drinking water by triolein embedded absorbent
文献类型：期刊论文
| 作者 | Liu, Huijuan ; Ru, Jia ; Qu, Jiuhui ; Dai, Ruihua ; Wang, Zijian ; Hu, Chun |
| 刊名 | BIORESOURCE TECHNOLOGY
 |
| 出版日期 | 2009-06 |
| 卷号 | 100期号:12页码:2995-3002 |
| 关键词 | Persistent organic pollutants Absorbent Triolein Water treatment |
| 中文摘要 | A new biomimetic absorbent, cellulose acetate (CA) embedded with triolein (CA-triolein), was prepared and applied for the removal of persistent organic pollutants (POPs) from micro-polluted aqueous solution. The comparison of CA-triolein, CA and granular activated carbon (GAC) for dieldrin removal was investigated. Results showed that CA-triolein absorbent gave a lowest residual concentration after 24 h although GAC had high removal rate in the first 4 h adsorption. Then the removal efficiency of mixed POPs (e.g. aldrin, dieldrin, endrin and heptachlor epoxide), absorption isotherm, absorbent regeneration and initial column experiments of CA-triolein were studied in detail. The linear absorption isotherm and the independent absorption in binary isotherm indicated that the selected POPs are mainly absorbed onto CA-triolein absorbent by a partition mechanism. The absorption constant, K, was closely related to the hydrophobic property of the compound. Thermodynamic calculations showed that the absorption was spontaneous, with a high affinity and the absorption was an endothermic reaction. Rinsing with hexane the CA-triolein absorbent can be regenerated after absorption of POPs. No significant decrease in the dieldrin removal efficiency was observed even when the absorption-regeneration process was repeated for five times. The results of initial column experiments showed that the CA-triolein absorbent did not reach the breakthrough point at a breakthrough empty-bed volume (BV) of 3200 when the influent concentration was 1-1.5 mu g/L and the empty-bed contact time (EBCT) was 20 min. (C) 2009 Elsevier Ltd. All rights reserved. |
| WOS记录号 | WOS:000265335400016 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/21731]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Liu, Huijuan,Ru, Jia,Qu, Jiuhui,et al. Removal of persistent organic pollutants from micro-polluted drinking water by triolein embedded absorbent[J]. BIORESOURCE TECHNOLOGY,2009,100(12):2995-3002. |
| APA | Liu, Huijuan,Ru, Jia,Qu, Jiuhui,Dai, Ruihua,Wang, Zijian,&Hu, Chun.(2009).Removal of persistent organic pollutants from micro-polluted drinking water by triolein embedded absorbent.BIORESOURCE TECHNOLOGY,100(12),2995-3002. |
| MLA | Liu, Huijuan,et al."Removal of persistent organic pollutants from micro-polluted drinking water by triolein embedded absorbent".BIORESOURCE TECHNOLOGY 100.12(2009):2995-3002. |
入库方式： OAI收割
来源：生态环境研究中心
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