Performance analysis of pressure-retarded osmosis power using biomimetic aquaporin membrane

Wook Choi, Harim Bae, Hyung Keun Lee, Jonghwi Lee, Jong Hak Kim, Chul Ho Park

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Salinity gradient power is a system which sustainably generates electricity for 24 hrs, if the system is constructed at a certain place where both seawater and river water are consistently pumped. Since power is critically determined by the water flux and the salt rejection, a membrane of water-semipermeable aquaporin protein in cell membranes was studied for pressure-retarded osmosis. NaCl was used as a salt, and NaNO3 was used as a candidate to check the ion selectivity. The water flux of biomimetic aquaporin membranes was negligible at a concentration below 2 M. Also, there is no remarkable dependence of water flux and ion selectivity on concentrations higher than 3 M. Therefore, the biomimetic aquaporin membrane could not be applied into pressure-retarded osmosis; however, if a membrane could overcome the current limitations, the properties shown by natural cells could be accomplished.

Original languageEnglish
Pages (from-to)317-322
Number of pages6
JournalPolymer (Korea)
Volume39
Issue number2
DOIs
Publication statusPublished - 2015 Mar 1

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Polymers and Plastics
  • Materials Chemistry

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