Electrodialysis-vacuum membrane distillation integrated process to concentrate ionic liquids

LIU Yan; XIA Tiantian; SUN Weishi; WAN Yinhua; SHEN Fei; DENG Huining

doi:10.11949/j.issn.0438-1157.20180217

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Electrodialysis-vacuum membrane distillation integrated process to concentrate ionic liquids

更新时间：2025-12-10

- Electrodialysis-vacuum membrane distillation integrated process to concentrate ionic liquids
- CIESC Journal Issue 9, Pages: 3905-3913(2018)
- 作者机构：
  
  1. 河北工业大学化工学院,天津,300130
  2. 中国科学院过程工程研究所生化工程国家重点实验室,北京,100190
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20180217
  CLC： Q028.8
- Online First：05 September 2018，
  
  Published：05 September 2018
- 稿件说明：
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LIU Yan, XIA Tiantian, SUN Weishi, et al. Electrodialysis-vacuum membrane distillation integrated process to concentrate ionic liquids[J]. CIESC Journal, 2018, (9): 3905-3913.
DOI：

LIU Yan, XIA Tiantian, SUN Weishi, et al. Electrodialysis-vacuum membrane distillation integrated process to concentrate ionic liquids[J]. CIESC Journal, 2018, (9): 3905-3913. DOI： 10.11949/j.issn.0438-1157.20180217.

摘要

为了达到最大限度回收离子液体循环再利用的目的，用电渗析-真空膜蒸馏集成膜法浓缩低浓度质量分数（下同）为1%~5%的离子液体水溶液，实现了有效可操作的膜集成浓缩过程控制。分析了膜集成过程中电渗析施加电压、料液初始浓度和料液体积比等操作参数对优化工艺的影响，获得了此电渗析过程的最高浓缩浓度。当电渗析可浓缩[AMIM]Cl至最大浓度时，即可切换至真空膜蒸馏过程深度浓缩，最终可将[AMIM]Cl水溶液浓缩至48.2%。

Abstract

To achieve the maximum recovery of ionic liquid recycling

the electrodialysis-vacuum membrane distillation integrated process was proposed to concentrate the low concentration mass fraction (the same below) in 1%-5% ionic liquid. It achieved effective and operational membrane integrated concentration control process. The influence of operating parameters in ED process

including voltage

initial concentration

and the volumetric feed ratio was analyzed and a maximum concentration was obtained. The[AMIM]Cl aqueous solution can be condensed to 48.2% after switched to the vacuum membrane distillation process.

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