Influential Mechanism of Natural Organic Matters with Calcium Ion on the Anion Exchange Membrane Fouling Behavior via xDLVO Theory

Zhun Ma; Lu Zhang; Ying Liu; Xiaosheng Ji; Yuting Xu; Qun Wang; Yongchao Sun; Xiaomeng Wang; Jian Wang; Jianliang Xue; Xueli Gao

doi:10.3390/membranes11120968

Membranes (Dec 2021)

Influential Mechanism of Natural Organic Matters with Calcium Ion on the Anion Exchange Membrane Fouling Behavior via xDLVO Theory

Zhun Ma,
Lu Zhang,
Ying Liu,
Xiaosheng Ji,
Yuting Xu,
Qun Wang,
Yongchao Sun,
Xiaomeng Wang,
Jian Wang,
Jianliang Xue,
Xueli Gao

Affiliations

Zhun Ma: College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Lu Zhang: College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Ying Liu: College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Xiaosheng Ji: Sanya Institute of Oceanology, Chinese Academy of Sciences, Sanya 572000, China
Yuting Xu: College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Qun Wang: College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Yongchao Sun: College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Xiaomeng Wang: College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Jian Wang: The Institute of Seawater Desalination and Multipurpose Utilization, Ministry of Natural Resources (MNR), Tianjin 300192, China
Jianliang Xue: College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Xueli Gao: Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China

DOI: https://doi.org/10.3390/membranes11120968
Journal volume & issue: Vol. 11, no. 12
p. 968

Abstract

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The fouling mechanism of the anion exchange membrane (AEM) induced by natural organic matter (NOM) in the absence and presence of calcium ions was systematically investigated via the extended Derjaguin–Landau–Verwey–Overbeek (xDLVO) approach. Sodium alginate (SA), humic acid (HA), and bovine serum albumin (BSA) were utilized as model NOM fractions. The results indicated that the presence of calcium ions tremendously aggravated the NOM fouling on the anion exchange membrane because of Ca-NOM complex formation. Furthermore, analysis of the interaction energy between the membrane surface and foulants via xDLVO revealed that short-range acid–base (AB) interaction energy played a significant role in the compositions of interaction energy during the electrodialysis (ED) process. The influence of NOM fractions in the presence of calcium ions on membrane fouling followed the order: SA > BSA > HA. This study demonstrated that the interaction energy was a dominating indicator for evaluating the tendency of anion exchange membranes fouling by natural organic matter.

Published in Membranes

ISSN: 2077-0375 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Chemical technology: Chemical engineering
Website: https://www.mdpi.com/journal/membranes

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