| 蒙脱石/DOM复合体对菲的吸附 |
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| 引用本文： | 李涛,吴平霄,陈秋强.蒙脱石/DOM复合体对菲的吸附[J].环境科学学报,2010,30(2):383-389. |
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| 作者姓名： | 李涛 吴平霄 陈秋强 |
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| 作者单位： | 华南理工大学环境科学与工程学院,工业聚集区污染控制与生态修复教育部重点实验室,广州,510006 |
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| 基金项目： | 国家自然科学基金项目（No. 40973075, 40573064）；教育部新世纪优秀人才支持计划（No.NCET-06-0747）；广东省科技计划项目（No.2006B36601004,2008B030302036）；广东省自然科学基金项目（No.06025666） |
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| 摘 要： | 以垃圾渗滤液为水溶性有机质(DOM)提取原料,通过与吸附载体蒙脱石的有机-无机复合制得蒙脱石/DOM复合体,研究其对菲的吸附作用以及温度、pH值、固液比等不同因素对吸附过程的影响.结果表明,相比蒙脱石原土,蒙脱石/DOM复合体对菲的吸附能力得到显著提高;随着温度升高吸附量呈下降趋势;介质pH值对吸附影响不大;随着固液比的增大,平均吸附量逐渐减小,吸附率逐渐增大.动力学研究表明,菲在蒙脱石/DOM复合体上的吸附等温线与Henry线性方程和Freundlich经验方程的线性拟合较好.另外,对菲在蒙脱石/DOM复合体上的解吸实验表明,菲在蒙脱石/DOM复合体上的吸附有较好的稳定性.
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| 关 键 词： | 吸附 水溶性有机物 蒙脱石 复合体 菲 |
| 收稿时间： | 4/19/2009 2:46:55 PM |
| 修稿时间： | 7/23/2009 6:10:29 PM |
Sorption of phenanthrene on a montmorillonite /DOM (dissolved organic matter) complex |
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| LI Tao,WU Pingxiao and CHEN Qiuqiang.Sorption of phenanthrene on a montmorillonite /DOM (dissolved organic matter) complex[J].Acta Scientiae Circumstantiae,2010,30(2):383-389. |
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| Authors: | LI Tao WU Pingxiao and CHEN Qiuqiang |
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| Institution: | College of Environmental Science and Engineering, South China University of Technology, The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006,College of Environmental Science and Engineering, South China University of Technology, The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006 and College of Environmental Science and Engineering, South China University of Technology, The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006 |
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| Abstract: | An organic-mineral complex of montmorillonite and dissolved organic matter (DOM) was synthesized using trash infiltration fluid as the raw material to extract DOM. The sorption behavior of phenanthrene on the montmorillonite/DOM complex was investigated by varying parameters including temperature, pH, and solid-liquid ratio. The results indicated that the sorption capacity of the montmorillonite/DOM complex for phenanthrene increased dramatically compared with that of pristine montmorillonite; the sorption quantity decreased with increasing temperature, but was barely influenced by pH; the equilibrium sorption capacities decreased, while the sorption efficiencies increased with increasing solid/liquid ratio. In addition, the kinetic data of phenanthrene sorption by the montmorillonite/DOM complex were fit well by the Henry equation and the Freundlich equation. Moreover, desorption experiments of phenanthrene on the montmorillonite/ DOM complex demonstrated that phenanthrene has good sorption stability on the complex. |
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| Keywords: | sorption DOM montmorillonite complex phenanthrene |
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