渗透
膜
海水淡化
材料科学
薄膜复合膜
反渗透
纤维
化学工程
纺纱
渗透
复合材料
化学
生物化学
工程类
作者
Can Zeng Liang,Mohammad Askari,Looh Tchuin Choong,Tai‐Shung Chung
标识
DOI:10.1038/s41467-021-22684-1
摘要
Abstract Osmotically assisted reverse osmosis (OARO) has become an emerging membrane technology to tackle the limitations of a reverse osmosis (RO) process for water desalination. A strong membrane that can withstand a high hydraulic pressure is crucial for the OARO process. Here, we develop ultra-strong polymeric thin film composite (TFC) hollow fiber membranes with exceptionally high hydraulic burst pressures of up to 110 bar, while maintaining high pure water permeance of around 3 litre/(m 2 h bar) and a NaCl rejection of about 98%. The ultra-strong TFC hollow fiber membranes are achieved mainly by tuning the concentration of the host polymer in spinning dopes and engineering the fiber dimension and morphology. The optimal TFC membranes display promising water permeance under the OR and OARO operation modes. This work may shed new light on the fabrication of ultra-strong TFC hollow fiber membranes for water treatments and desalination.
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