膜科学与技术

磺化杂萘联苯聚醚酮膜电渗析脱盐和浓缩

作者：邓聪，张守海，刘乾，王昭琪，陈宇宁，蹇锡高

单位：大连理工大学化工学院高分子材料系，辽宁省高性能树脂工程技术研究中心，辽宁省高分子科学与工程重点实验室，大连 116024

关键词：电渗析；磺化杂萘联苯聚醚酮; 离子交换膜；脱盐；浓缩

出版年,卷(期):页码： 2020,40(4):99-106

摘要：

以磺化杂萘联苯聚芳醚酮离子交换膜为电渗析阳膜，考察初始溶液体积比、流速和操作电流等条件对低浓度溶液脱盐和高浓度溶液浓缩的效果。结果表明，浓淡室初始溶液体积比从1:1增大到3:1，对于低浓度溶液的脱盐效果以及能耗无明显影响；而高浓度溶液浓缩实验中，浓淡室初始溶液体积比从1:1调节为1:3，最终浓缩率可以从94%提高到201%。流速从20 mL/min提高到60 mL/min，对低浓度溶液的脱盐过程造成不利影响，105 min时的脱盐率从76%降低到71%；而高浓度溶液的最终浓缩率却从191%增加到223%。随着操作电流增加，低浓度溶液脱盐率增大和高浓度溶液浓缩效率提高，但会导致操作电压和能耗增大。

Sulfonated poly(phthalazinone ether ketone) membrane was used as cation exchange membrane for electrodialysis. The effects of volume ratio, flow rate and operation current on desalination of low concentration solution and concentration of high concentration solution were investigated. The results showed there were no significant influence on desalination of low concentration solution and energy consumption, when the volume ratio of the concentrate cell to the dilute cell increased from 1:1 to 3:1. However, the final concentration rate for high concentration solution increased from 94% to 201%, when the volume ratio of the concentrate cell to the dilute cell changed from 1:1 to 1:3. As the flow rate increased from 20 to 60 mL/min, the desalination rate of low concentration solution decreased from 76% to 71% at 105 min, while the final concentration of high concentrated solution increased from 191% to 223%. The desalination rate of low concentration solution and concentration rate of high concentration solution increased with an increase in operating current (0.1-0.18 A), but energy consumption would be increased.

第一作者：邓聪（1994-），男，广东云浮人，硕士研究生，从事电渗析用离子交换膜的研究. 通讯作者，E-mail：zhangshh@dlut.edu.cn，jian4616@dlut.edu.cn

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