Thin film composite reverse osmosis membranes prepared via layered interfacial polymerization

Wansuk Choi, Sungkwon Jeon, Soon Jin Kwon, Hosik Park, You In Park, Seung Eun Nam, Pyung Soo Lee, Jong Suk Lee, Jongmoon Choi, Seungkwan Hong, Edwin P. Chan, Jung-hyun Lee

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

Reverse osmosis (RO) process using a thin-film composite (TFC) membrane is a current leading technology for water desalination. The polyamide permselective layer of the TFC membrane enables salt retention and water permeation, with the ultimate goal of minimizing the permselective layer thickness for maximum energy efficiency. Yet this drive towards reducing the permselective layer thickness is greatly handicapped by the interfacial polymerization (IP) approach used to fabricate TFC membranes. We present layered interfacial polymerization (LIP) as a new paradigm for fabricating TFC membranes with unprecedented nanoscale control in the permselective layer thickness and smoothness, coupled with the advantage of industrial scale manufacturability. Membranes fabricated using LIP demonstrated high NaCl rejection necessary for water desalination, with water permeance ≈86% and permselectivity ≈450% greater than that of the membranes prepared using conventional IP and comparable water permeance and permselectivity ≈17% higher than that of commercial RO membranes. In addition, the unique smooth morphology of the LIP-assembled membrane surface enabled to mitigate the membrane fouling compared to the characteristic rough surface of the conventional IP-assembled membrane.

Original languageEnglish
Pages (from-to)121-128
Number of pages8
JournalJournal of Membrane Science
Volume527
DOIs
Publication statusPublished - 2017 Apr 1

Keywords

  • Interfacial polymerization
  • Molecular layer-by-layer
  • Polyamide thin film composite membrane
  • Reverse osmosis
  • Water desalination

ASJC Scopus subject areas

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation

Fingerprint Dive into the research topics of 'Thin film composite reverse osmosis membranes prepared via layered interfacial polymerization'. Together they form a unique fingerprint.

  • Cite this

    Choi, W., Jeon, S., Kwon, S. J., Park, H., Park, Y. I., Nam, S. E., Lee, P. S., Lee, J. S., Choi, J., Hong, S., Chan, E. P., & Lee, J. (2017). Thin film composite reverse osmosis membranes prepared via layered interfacial polymerization. Journal of Membrane Science, 527, 121-128. https://doi.org/10.1016/j.memsci.2016.12.066