Application of Pulsed Electric Field in Antifouling Treatment of Sodium Gluconate Mother Liquor by Electrodialysis
1
College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China
2
College of Life Sciences, Qingdao University, Qingdao 266071, China
3
Key Laboratory of Charged Polymeric Membrane Materials of Shandong Province, Shandong Tianwei Membrane Technology Co., Ltd., Weifang 261061, China
4
State Key Laboratory of Bio-Fibers and Eco-Textiles, Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles, Qingdao University, Qingdao 266071, China
*
Authors to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Materials 2020, 13(11), 2501; https://doi.org/10.3390/ma13112501
Received: 16 March 2020
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Revised: 28 April 2020
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Accepted: 7 May 2020
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Published: 30 May 2020
Contamination of ion exchange membranes is one of the major problems in electrodialysis. Among the solutions that have been proposed and tested to alleviate membrane fouling during electrodialysis so far, applying a pulsed electric field (PEF) at a fixed application time (Ton) followed by a pause time (Toff) has been proved to be effective. In this study, the PEF was applied to desalinate sodium gluconate mother liquor by ED. The experimental properties of conventional ED and pulsed ED and their effects on membrane fouling were compared. The results show that compared with conventional ED, pulsed ED can alleviate concentration polarization and enhance the performance of ED. Similarly, in the process of continuous batch treatment of mother liquor under the PEF condition, large organic molecules can be effectively prevented from depositing on the membrane surface. Therefore, an anion exchange membrane (AEM) under the condition of PEF is contaminated mainly by organic molecules with a relatively smaller size. Both the surface and interior of AEM membrane were affected by organic pollutants under conventional electric field (CEF) conditions.
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MDPI and ACS Style
Gao, Q.; Li, Z.; Lei, C.; Fu, R.; Wang, W.; Li, Q.; Liu, Z. Application of Pulsed Electric Field in Antifouling Treatment of Sodium Gluconate Mother Liquor by Electrodialysis. Materials 2020, 13, 2501. https://doi.org/10.3390/ma13112501
AMA Style
Gao Q, Li Z, Lei C, Fu R, Wang W, Li Q, Liu Z. Application of Pulsed Electric Field in Antifouling Treatment of Sodium Gluconate Mother Liquor by Electrodialysis. Materials. 2020; 13(11):2501. https://doi.org/10.3390/ma13112501
Chicago/Turabian StyleGao, Qi, Zichao Li, Chunxiao Lei, Rongqiang Fu, Wei Wang, Qun Li, and Zhaoming Liu. 2020. "Application of Pulsed Electric Field in Antifouling Treatment of Sodium Gluconate Mother Liquor by Electrodialysis" Materials 13, no. 11: 2501. https://doi.org/10.3390/ma13112501
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