| 离子交换膜间水的电离及其应用 |
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| 引用本文： | 王方.离子交换膜间水的电离及其应用[J].化工进展,2003,22(6):630-633. |
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| 作者姓名： | 王方 |
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| 作者单位： | 清华大学热能工程系,北京,100084 |
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| 摘 要： | 电渗析器中淡水室内阴阳离子交换膜间的纯水，可以在直流电场的作用下发生电离，产生H^ 和OH^-离子。通过分析纯水的电离，讨论了普通电渗析(ED)和填充床电渗析(EDI)中水的电离现象及其相关机理。EDI过程中水电离产生的H^ 和OH^-离子可以自再生离子交换树脂。简单介绍离子交换膜间水电离的应用，即已得到产业化的EDI技术和正在推广中的离子交换树脂的电再生技术。
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| 关 键 词： | 离子交换膜 水 电离 填充床 电渗析 离子交换树脂 电再生 |
| 文章编号： | 1000-6613(2003)06-0630-04 |
| 修稿时间： | 2003年2月25日 |
Water Dissociation between Cation and Anion-exchange Membranes and its Application |
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| Wang Fang.Water Dissociation between Cation and Anion-exchange Membranes and its Application[J].Chemical Industry and Engineering Progress,2003,22(6):630-633. |
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| Authors: | Wang Fang |
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| Abstract: | Pure water between cation and anion-exchange membranes in depleting compartment of electrodialyzer (ED) may dissociate into H + and OH - ions effecting under DC electric field. This paper discusses the water dissociation and its relating mechanism in the ED and EDI processes. The H + and OH - ions produced by water dissociation may self regenerate ion exchange resins. Applications are brief introduced:one is the developed EDI technology,and the other is the spreading electro-regeneration technology of ion-exchange resins.The latter technology is invented by the author. |
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| Keywords: | water dissociation ion-exchange membrane electrodeionization(EDI) electro-regeneration technology of ion-exchange resins |
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