Fabrication of dialyzer membrane-based forward osmosis modules via vacuum-assisted interfacial polymerization for the preparation of dialysate
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作者
Zhao, Shuwei; Dou, Pengjia; Sun, Nan; Shon, Ho Kyong; He, Tao
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刊物名称
JOURNAL OF MEMBRANE SCIENCE
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年、卷、文献号
2022, 659, 0376-7388
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关键词
Zhao, Shuwei; Dou, Pengjia; Sun, Nan; Shon, Ho Kyong; He, Tao
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摘要
Direct preparation of dialysate from tap water based on osmotic dilution is beneficial for home hemodialysis which requires a defect-free forward osmosis (FO) membrane module. This report introduced a new vacuum -assisted interfacial polymerization (VAIP) process for optimal distribution of the aqueous phase and a well -controlled IP using dialyzer membranes. We demonstrated statistically that the vacuum-assisted process is beneficial for the preparation of integral FO modules with multiple fine fibers due to the good distribution of the aqueous phase. The as-prepared FO module displayed a low structural parameter (262 mu m), an acceptable water flux (17.6 L m(-2) h(-1)), and a low specific reverse salt flux (0.16 g/L) using deionized (DI) water as the feed and 1 M NaCl as the draw in AL-FS mode. Direct dialysate preparation from tap water using the FO module was presented and modeled with a good fit. The work showcases a new FO module based on dialyzer and its potential applications in the medical field.
