Monosodium glutamate as a draw solute for sewage thickening by forward osmosis-nanofiltration

Seungheon Yang, Taekguen Yun, Soon Bum Kwon, Kyungjin Cho, Seongpil Jeong, Seungkwan Hong, Seockheon Lee

Research output: Contribution to journalArticlepeer-review


Monosodium glutamate (MSG) was evaluated as a draw solute (DS) of forward osmosis-nanofiltration (FO-NF) process for sewage thickening. Water flux (Jw) and reverse draw solute flux (Js) through FO membrane with MSG were compared to those with NaCl as the reference DS. In addition, the influence of MSG to anaerobic digestion of concentrated sewage for methane gas production was investigated. The Js/Jw for MSG was 0.0015mol/L at 1M of initial concentration with a CTA(HTI) membrane, which was 6 % of that for NaCl, while the water flux (Jw) for MSG (ca. 10 L/m2h) was comparable to that for NaCl in FO processes. MSG recovered up to 98% by NF process, which changed with applied membrane and MSG concentration. The collected primary effluent from the full-scale wastewater treatment plant was thickened up to nine times in terms of volumetric concentration factor. The physical membrane flushing by a water could effectively recover the flux. The inhibitory effects of MSG on anaerobic methane production could be negligible and the gas production potential increased.

Original languageEnglish
Pages (from-to)165-175
Number of pages11
JournalMembrane Water Treatment
Issue number4
Publication statusPublished - 2021 Jul

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  • anaerobic toxicity assay
  • forward osmosis
  • monosodium glutamate
  • nanofiltration
  • reverse solute flux
  • sewage thickening

ASJC Scopus subject areas

  • General Chemical Engineering
  • Water Science and Technology


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