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Roles of soluble microbial products and extracellular polymeric substances in membrane fouling

  • Kibaek Lee*
  • , Seonki Lee
  • , Jaewoo Lee
  • , Xiaolei Zhang
  • , Sang Hyun Lee
  • *Corresponding author for this work
  • National University of Singapore
  • Nanyang Technological University
  • Shanghai University
  • University of Minnesota Twin Cities

Research output: Contribution to conferenceChapterpeer-review

Abstract

Soluble microbial products (SMPs) and extracellular polymeric substances (EPSs) are produced and secreted out of the cell by microorganisms such as bacteria, fungi, algae, protozoa, metazoa, etc. and regarded as crucial biopolymeric substances that determine the properties of mixed liquor, i.e., activated sludge, including aggregation, flocculation, sedimentation, hydrophilicity, hydrophobicity, adhesion properties, etc., and hence they significantly affect membrane fouling in membrane bioreactor (MBR). In the membrane-fouling studies of MBR, over the 310 papers related to SMPs and EPSs researches have been published from 2005 to the second quarter of 2019 at Web of Science. However, not all papers have the same conclusions, and there is still somewhat ambiguity about the relationships and roles of biopolymeric substances (e.g., SMPs and EPSs) and membrane fouling in MBR. Therefore, in this chapter, we aim to provide the summaries, discussions, and suggest further research for perspectives regarding SMPs, EPSs, and membrane fouling in MBR.

Original languageEnglish
Title of host publicationCurrent Developments in Biotechnology and Bioengineering
Subtitle of host publicationAdvanced Membrane Separation Processes for Sustainable Water and Wastewater Management - Aerobic Membrane Bioreactor Processes and Technologies
PublisherElsevier
Pages45-79
Number of pages35
ISBN (Print)9780128198094
DOIs
StatePublished - 2020.01.30

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 6 - Clean Water and Sanitation
    SDG 6 Clean Water and Sanitation

Keywords

  • Biofouling
  • EPSs
  • Extracellular polymeric substances
  • MBR
  • Membrane bioreactor
  • Membrane fouling
  • SMPs
  • Soluble microbial products

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