Desalination across a graphene oxide membrane via direct contact membrane distillation

Madhuleena Bhadra, Sagar Roy, Somenath Mitra

Research output: Contribution to journalArticlepeer-review

88 Scopus citations

Abstract

We demonstrate the immobilization of graphene oxide on polytetrafluoroethylene (PTFE) membrane surface for desalination via direct contact membrane distillation. The graphene oxide immobilized membrane significantly enhanced the overall permeate flux with complete salt rejection, and the flux reached as high as 97kg/m2h at 80°C. We attribute this enhancement in flux to multiple factors including selective sorption, nanocapillary effect, reduced temperature polarization as well as the presence of polar functional groups in graphene oxide.

Original languageEnglish (US)
Pages (from-to)37-43
Number of pages7
JournalDesalination
Volume378
DOIs
StatePublished - Jan 15 2016

All Science Journal Classification (ASJC) codes

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

Keywords

  • Desalination
  • Direct contact membrane distillation
  • Flux enhancement
  • Graphene oxide
  • Mass transfer coefficient

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