聚丙烯酸钠污染阴离子交换膜的清洗方法

孙艺欣; 曹刚; 戴景富; 张春宇; 沈志强; 宋玉栋; 何绪文; 周岳溪

doi:10.12153/j.issn.1674-991X.2019.04.040

聚丙烯酸钠污染阴离子交换膜的清洗方法

doi: 10.12153/j.issn.1674-991X.2019.04.040

孙艺欣^1,2,
曹刚^1,2,
戴景富⁴,
张春宇^1,4,
沈志强^2,3,
宋玉栋^2,3,
何绪文¹,
周岳溪^2,3

^1. 中国矿业大学(北京)化学与环境工程学院,北京 100083
^2. 中国环境科学研究院水污染控制技术研究中心,北京 100012
^3. 环境基准与风险评估国家重点实验室,中国环境科学研究院,北京 100012
^4. 中国石油天然气股份有限公司吉林石化分公司,吉林吉林 132022

详细信息

作者简介:
孙艺欣(1994—),女,硕士,主要研究方向为水污染控制技术, sunyixinpurple@163.com

中图分类号: X505
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- 文章访问数: 389
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- 被引次数: 0
出版历程
- 收稿日期: 2019-02-25
- 刊出日期: 2019-11-20

A cleaning method for anion exchange membrane fouled by sodium polyacrylate

^1. School of Chemical and Environmental Engineering, China University of Mining and Technology(Beijing), Beijing 100083, China
^2. Research Center of Water Pollution Control Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
^3. State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
^4. Jilin Petrochemical Company, Ltd., PetroChina, Jilin 132022, China;

摘要

摘要: 聚丙烯酸钠对阴离子交换膜的污染是影响双极膜电渗析回收丙烯酸丁酯废水中有机酸的关键因素之一。针对该问题研究开发了聚丙烯酸钠污染后离子交换膜的清洗方法,并采用膜电阻、迁移数、表面X射线光电子谱(XPS)分析等对膜清洗效果进行了表征。NaOH、NaCl和HCl溶液3种清洗液对离子交换膜的机械清洗及超声强化清洗效果表明,HCl溶液对聚丙烯酸钠污染阴离子交换膜的清洗效果最好,超声波可促进NaOH、NaCl和HCl溶液的清洗效果。采用2.0 mol/L的HCl溶液对受污染阴离子交换膜进行超声清洗,其膜电阻和迁移数可基本恢复到未污染膜的水平。
- 聚丙烯酸钠 /
- 离子交换膜污染 /
- 膜清洗 /
- 超声强化清洗
Abstract: Anion exchange membrane fouling caused by sodium polyacrylate (PAS) is one of the critical factors that affect organic acid recovery from butyl acrylate wastewater through bipolar membrane electrodialysis. To address this problem, a cleaning method for PAS-fouled anion exchange membrane was developed. The cleaning efficiency of PAS-fouled membrane was evaluated by analysis of membrane resistance, transference number and X-ray photo-electronic spectroscopy (XPS). The cleaning performances with three different cleaning solutions (sodium hydroxide, sodium chloride, and hydrochloric acid) and ultrasonic enhanced cleaning indicated that hydrochloric acid had the best cleaning performance, and the ultrasound could enhance the cleaning effect of all the three solutions. The membrane resistance and transference number of the fouled anion exchange membrane could almost be restored to the same level as uncontaminated membrane when using ultrasound-enhanced cleaning process with 2.0 mol/L hydrochloric acid as cleaning solution.
- sodium polyacrylate /
- ion exchange membrane fouling /
- membrane cleaning /
- ultrasound-enhanced cleaning

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