Highly permeable and mechanically durable forward osmosis membranes prepared using polyethylene lithium ion battery separators

Soon Jin Kwon, Sang Hee Park, Min Sang Park, Jong Suk Lee, Jung-hyun Lee

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

A porous polyethylene (PE) membrane commercialized as a lithium ion battery separator was utilized as a support for the fabrication of a highly permeable and mechanically durable thin film composite (TFC) forward osmosis (FO) membrane. The highly open and interconnected pore structure of the PE support combined with its thin thickness (~8 µm) is beneficial for mitigating internal concentration polarization, thus enhancing FO water flux. The proper plasma treatment on the PE support and the use of a surfactant enabled the stable formation of a polyamide permselective layer on top of the support via a commercial interfacial polymerization process. The prepared PE-supported TFC (PE-TFC) membrane exhibited a remarkably high FO performance (~3.5 times higher water flux and ~35% lower specific salt flux than the commercial HTI-CTA membrane in FO mode) due to its significantly low structural parameter (~161 µm) and high permselectivity. The PE-TFC membrane also had superior mechanical properties compare to the much thicker commercial FO membrane due to the exceptionally high mechanical integrity of the PE support, ensuring the mechanically stable membrane operation. The proposed strategy offers a new material platform for FO membranes with strong commercial potential and excellent performance and durability.

Original languageEnglish
Pages (from-to)213-220
Number of pages8
JournalJournal of Membrane Science
Volume544
DOIs
Publication statusPublished - 2017 Jan 1

Fingerprint

Osmosis
Osmosis membranes
osmosis
Polyethylene
separators
Separators
Lithium
Polyethylenes
polyethylenes
lithium
Ions
membranes
Membranes
ions
Composite membranes
Fluxes
Thin films
composite materials
thin films
Water

Keywords

  • Forward osmosis
  • Interfacial polymerization
  • Lithium ion battery separator
  • Polyethylene
  • Thin film composite membranes

ASJC Scopus subject areas

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

Cite this

Highly permeable and mechanically durable forward osmosis membranes prepared using polyethylene lithium ion battery separators. / Kwon, Soon Jin; Park, Sang Hee; Park, Min Sang; Lee, Jong Suk; Lee, Jung-hyun.

In: Journal of Membrane Science, Vol. 544, 01.01.2017, p. 213-220.

Research output: Contribution to journalArticle

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