Effect of surfactants on the reduction of industrial saline wastewater by electrodialysis

被引：0
|
作者：
Zhao J. [1 ]
Tan M. [1 ]
机构：
[1] College of Environmental and Safety Engineering, Qingdao University of Science and Technology, Shandong, Qingdao
来源：
Huagong Jinzhan/Chemical Industry and Engineering Progress | 2023年 / 42卷
关键词：
electrodialysis; industrial saline wastewater; reduction; surfactants;
D O I：
10.16085/j.issn.1000-6613.2023-0574
中图分类号：
学科分类号：
摘要：
The studies on the effects of surfactants on electrodialysis systems are limited. The effect of surfactant type on the reduction of industrial saline wastewater by electrodialysis was examined. Anionic and cationic surfactants, typified by sodium dodecylbenzene sulfonate (SDBS) and dodecyl dimethyl benzyl ammonium chloride (DDBAC), caused an inhibitory effect on the electrodialysis system by forming a contamination layer on the membrane surface. Membrane resistance increased from 4.72Ω •cm2 to 30.46Ω•cm2 and 15.23Ω•cm2. In addition, compared to the pure sodium chloride system, desalination rate decreased 4.54% and 4.75%, and flux of NaCl decreased to 0.19mol/(m2·h) and 0.2mol/(m2·h), respectively. Moreover, transfer rate of SDBS and DDBAC were as high as 58.55% and 90.45%. Octyl phenol (OP-10) and thiobetaine (SB-12), typical non-ionic and amphoteric surfactants, had no significant effect on the electrodialysis system, and the membrane resistance, desalination rate and ion flux remained at the same level compared to the pure NaCl system. The experimental results revealed the influence mechanism of surfactant on electrodialysis performance, and laid the foundation on the wide application of electrodialysis in the field of reduction of industrial saline wastewater. © 2023 Chemical Industry Press. All rights reserved.
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页码：529 / 535
页数：6
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