Surface-dissociated nanoparticle draw solutions in forward osmosis and the regeneration in an integrated electric field and nanofiltration System

Ming Ming Ling, Tai-Shung Chung*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

Draw solutions of surface-dissociated nanoparticles in forward osmosis (FO) processes and their regeneration through an integrated electric field-nanofiltration system for water reclamation were explored for the first time. Nanoparticles of 20 nm in diameter were functionalized with different surface chemistries to systematically investigate the effects on the FO performance. Experimental results showed that the draw solutions of surface-dissociated nanoparticle prepared with alkalis exhibited higher osmotic driving forces. Compared to salt base draw solutes, the advantage of surface-dissociated nanoparticle draw solutes exhibits no reverse flux across the FO membrane. The diluted draw solution of surface-dissociated nanoparticles can be readily recovered via an integrated electric field and nanofiltration system with sustainable regeneration efficiency. Our preliminary results suggest the potential of surface-dissociated nanoparticles as draw solutes in FO for water reuse.

Original languageEnglish (US)
Pages (from-to)15463-15471
Number of pages9
JournalIndustrial and Engineering Chemistry Research
Volume51
Issue number47
DOIs
StatePublished - Nov 28 2012

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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