| 有机蒙脱石填充PDMS膜分离水相有机物的渗透汽化研究 |
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| 引用本文： | 余江,李昊,刘会洲.有机蒙脱石填充PDMS膜分离水相有机物的渗透汽化研究[J].环境化学,2005,24(4):397-400. |
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| 作者姓名： | 余江 李昊 刘会洲 |
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| 作者单位： | 中国科学院过程工程研究所分离科学与工程实验室,北京,100080 |
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| 基金项目： | 国家自然科学基金(No．50244021,No．50474045)
教育部留学回国人员启动基金资助项目． |
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| 摘 要： | 以乙醇、乙酸的水溶液为渗透汽化分离对象，将CTAB柱撑蒙脱石作为填充剂，制备了填充型PDMS(聚二甲基硅氧烷)膜，研究填充膜对乙醇／水及乙酸／水体系的渗透汽化分离，结果表明，蒙脱石的吸附特性及其层间柱撑通道可以明显改善PDMS膜的选择性和通量，填充膜分离乙醇或乙酸的分离效果明显不同，对可能存在的渗透汽化分离机理进行了探讨。
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| 关 键 词： | 膜分离 有机蒙脱石 有机物 渗透汽化分离 聚二甲基硅氧烷 水相 柱撑蒙脱石 PDMS膜 CTAB 吸附特性 分离效果 分离机理 乙醇 水溶液 乙酸 填充剂 填充型 水体系 填充膜 通量 |
STUDIES ON RECOVERY OF ORGANIC COMPOUNDS OVER WATER BY ORGANOMONTMORILLONITE FILLED PDMS MEMBRANE |
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| YU Jiang,LI Hao,LIU Hui-zhou.STUDIES ON RECOVERY OF ORGANIC COMPOUNDS OVER WATER BY ORGANOMONTMORILLONITE FILLED PDMS MEMBRANE[J].Environmental Chemistry,2005,24(4):397-400. |
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| Authors: | YU Jiang LI Hao LIU Hui-zhou |
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| Institution: | YU Jiang LI Hao LIU Hui-zhou Laboratory of Separation Science & Engineering,Institute of Process Engineering,Chinese Academy of Sciences,Beijing,100080 |
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| Abstract: | In this study, a modified PDMS membrane was prepared by using cetyltrimethylammonium bromide ( CTAB) pillared montmorillonite as a filling material. The primary experimental results indicated that the hybrid membrane gave much better pervaporation performances on the permeate selectivity and flux on the separation of acetic acid and alcohol from their water-rich mixture, respectively. Although the hybrid membrane showed the similar PV characteristics on separation of alcohol over water as the plain PDMS membrane, a big different pervaporation phenomena on separation of acetic acid over water using the hybrid PDMS membrane was observed. A possible pervaporation mechanism on the acetic acid separation was suggested according to the experimental data and the membrane structure. |
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| Keywords: | PDMS organo-montmorillonite pervaporation ethanol acetic acid |
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