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Ultra-strong polymeric hollow fiber membranes for saline dewatering and desalination

Author

Listed:
  • Can Zeng Liang

    (National University of Singapore)

  • Mohammad Askari

    (National University of Singapore)

  • Looh Tchuin (Simon) Choong

    (Gradiant International Holdings Pte. Ltd., 1 Cleantech Loop #03-04/05/06)

  • Tai-Shung Chung

    (National Taiwan University of Science and Technology)

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/(m2 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.

Suggested Citation

  • Can Zeng Liang & Mohammad Askari & Looh Tchuin (Simon) Choong & Tai-Shung Chung, 2021. "Ultra-strong polymeric hollow fiber membranes for saline dewatering and desalination," Nature Communications, Nature, vol. 12(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-22684-1
    DOI: 10.1038/s41467-021-22684-1
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