Preparation, characterization and performance of poly(aylene ether sulfone)/modified silica nanocomposite reverse osmosis membrane for seawater desalination

Sang Gon Kim, Jeong Hwan Chun, Byung Hee Chun, Sung Hyun Kim

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)

Abstract

In this paper, composite reverse osmosis (RO) membranes made from sulfonated poly(arylene ether sulfone) containing amino groups (aPES) and hyper-branched aromatic polyamide-grafted silica (HBP-g-silica) were prepared, with the aim of enhancing chlorination resistance and improving membrane performance. The performance of the RO membranes containing aPES and HBP-g-silica was evaluated; the salt rejection and water flux were 96% and 34L/m2/h, respectively. After the chlorination test, the salt rejection decreased by only 14% and the water flux increased by 4L/m2/h. The aPES/HBP-g-silica significantly modified the three-dimensional polyamide (PA) network structures and contributed to the high performance because of the chain stiffness of the copolymer with a high degree of cross-linking in the RO membranes. Therefore, the aPES and HBP-g-silica, which helped improve water permeability, also protected the active layer structure from degradation and enhanced the chlorine resistance of the RO membrane.

Original languageEnglish
Pages (from-to)76-83
Number of pages8
JournalDesalination
Volume325
DOIs
Publication statusPublished - 2013 Sep 16

Keywords

  • Chlorine resistance
  • Desalination
  • Nanoparticle
  • Reverse osmosis
  • Sulfonated poly(arylene ether sulfone)

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)
  • Water Science and Technology
  • Mechanical Engineering

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