聚丙烯
海水淡化
膜
化学工程
过滤(数学)
超滤(肾)
材料科学
微滤
化学
高分子化学
高分子科学
复合材料
色谱法
工程类
生物化学
统计
数学
作者
Ningning Gao,Qian Zhang,Yingqi Fan,Zhuo Chen,Yue Zhang,Junjun Gao,Jinjie Shi,Huiguo Wang,Kongyin Zhao,Ligang Lin
出处
期刊:Desalination
[Elsevier]
日期:2024-12-01
卷期号:591: 117984-117984
标识
DOI:10.1016/j.desal.2024.117984
摘要
Calcium alginate hydrogel filtration membranes show excellent fouling resistance, but the poor mechanical properties and instability limit the use of the membranes. In this paper, sodium alginate was co-crosslinked with Ba2+ and Ca2+ to prepare barium alginate/calcium alginate composite hydrogel membrane loaded on polypropylene non-woven (Ba/CaAlg-PP). The morphology, structure, and swelling rate of the composite filtration membrane were characterized. The fracture strength of the Ba/CaAlg membrane reached a maximum value of 2.47 MPa. The rejection rates of Ba/CaAlg-PP membrane for Methyl blue and NaCl were close to 100 % and <8.0 %, respectively. Meanwhile, the flux of the Ba/CaAlg-PP membrane in dye/NaCl mixture was 43.2 L·m−2·h−1 and the selectivity coefficient of dye/NaCl reached 154.6. Ba/CaAlg-PP membranes exhibited excellent permeability, rejection and long-term stability in protein desalination. The results of simultaneous fluorescence spectroscopy and molecular dynamics simulations showed that the Ba2+ in the Ba/CaAlg-PP membrane did not disrupt the helical structure of BSA. The Ba/CaAlg-PP membrane has a wide range of applications prospect in proteins and dyes desalination.
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