Electrical Resistance and Transport Numbers of Ion-Exchange Membranes Used in Electrodialytic Soil Remediation
Electrical Resistance and Transport Numbers of Ion-Exchange Membranes Used in Electrodialytic Soil Remediation
复制标题
电渗析土壤修复用离子交换膜的电阻和传输数
DOI：
10.1081/ss-100100767
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发表时间：
1999
影响因子：
2.8
通讯作者：
A. Villumsen
中科院分区：
文献类型：
--
作者：
H. Hansen;L. Ottosen;A. Villumsen
电渗析土壤修复是近年来发展起来的一种利用离子交换膜净化重金属污染土壤的方法。在这种方法中，离子交换膜的一侧与被污染的土壤直接接触。了解这种与土壤的接触是否会对膜造成损害，这一点非常重要。本文介绍了四种离子交换膜(Ionics，Inc.CR67 HMR412阳离子交换膜和Ionics，Inc.AR204 SXZR阴离子交换膜)在四种不同的电渗析土壤修复实验中的迁移数和电阻测量结果。实验表明，在电渗析土壤修复中使用后，离子交换膜具有与新膜相同的传输数。六种膜的电阻与新膜没有差别，而两种膜的电阻略有增加。
Electrodialytic soil remediation is a recently developed method to decontaminate heavy metal polluted soil using ion-exchange membranes. In this method one side of the ion-exchange membrane is in direct contact with the polluted soil. It is of great importance to know if this contact with the soil causes damage to the membrane. This work presents the result from transport number and electrical resistance measurements done on four sets of ion-exchange membranes (Ionics, Inc. CR67 HMR412 cation-exchange membranes and Ionics, Inc. AR204 SXZR anion-exchange membranes), which have been used in four different electrodialytic soil remediation experiments. The experiments showed that after the use in electrodialytic soil remediation, the ion-exchange membranes had transport numbers in the same magnitude as new membranes. The electrical resistance for six membranes did not differ from that of new membranes, whereas two membranes showed a slightly increased resistance.