Biomass Characteristics and Their Effect on Membrane Bioreactor Fouling

Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry
Petros K Gkotsis, Anastasios I Zouboulis

Abstract

Biomass characteristics are regarded as particularly influential for fouling in Membrane Bio-Reactors (MBRs). They primarily include the Mixed Liquor Suspended Solids (MLSS), the colloids and the Extracellular Polymeric Substances (EPS). Among them, the soluble part of EPS, which is also known as Soluble Microbial Products (SMP), is the most significant foulant, i.e., it is principally responsible for membrane fouling and affects all fundamental fouling indices, such as the Trans-Membrane Pressure (TMP) and the membrane resistance and permeability. Recent research in the field of MBRs, tends to consider the carbohydrate fraction of SMP (SMPc) the most important characteristic for fouling, mainly due to the hydrophilic and gelling properties, which are exhibited by polysaccharides and allow them to be easily attached on the membrane surface. Other wastewater and biomass characteristics, which affect indirectly membrane fouling, include temperature, viscosity, dissolved oxygen (DO), foaming, hydrophobicity and surface charge. The main methods employed for the characterization and assessment of biomass quality, in terms of filterability and fouling potential, can be divided into direct (such as FDT, SFI, TTF100, MFI, DFCM) or indi...Continue Reading

References

Feb 16, 2006·Environmental Microbiology·Kai ZhangDaniel B Oerther
Jun 9, 2012·Water Science and Technology : a Journal of the International Association on Water Pollution Research·C Thiemig
Oct 9, 2016·Bioresource Technology·Lijuan DengYun Wu
Feb 27, 2017·Water Research·Fangang MengSo-Ryong Chae

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Citations

Jul 10, 2020·Water Environment Research : a Research Publication of the Water Environment Federation·Susan Hove HansenMads Koustrup Jørgensen
Jan 18, 2021·Journal of Hazardous Materials·Thitiwut MaliwanJenyuk Lohwacharin
May 11, 2021·The Science of the Total Environment·Mary Vermi Aizza CorpuzVincenzo Naddeo

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Methods Mentioned

BETA
Scanning Electron Microscopy
Size
Nuclear Magnetic Resonance
membrane filtration

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