电渗析法可以有效去除1,3-丙二醇发酵液中存在的有机酸盐,保证下游处理过程的顺序进行.为了选取适于该脱盐过程的离子膜种类,采用4种离子交换膜分别进行了发酵液电渗析实验,通过对脱盐效果的综合评价着重探讨了离子交换膜性能的影响.实验研究表明,对于有机酸盐电渗析脱除过程,阴膜的选取至关重要;当阴、阳膜导电能力较强时,脱盐效果良好.此外,进行了中性溶质在不同离子膜中的模拟扩散实验.在综合比较脱盐效果和中性溶质扩散损失的基础上,获得了针对1,3-丙二醇发酵液电渗析脱盐的较优阴、阳离子膜种类.
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