Fouling of a microfiltration membrane by humic-like substances : a mathematical approach to modelling permeate flux and membrane retention

Membrane retention of the humic-like substances present in a soluble microbial products (SMP) suspension was studied by using a dead-end filtration system. The SMP suspension was extracted from the sludge of an enhanced biological phosphorus removal-membrane bioreactor. Our results showed that both...

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Bibliographische Detailangaben
Veröffentlicht in:Water science and technology : a journal of the International Association on Water Pollution Research. - 1986. - 73(2016), 12 vom: 01., Seite 3033-40
1. Verfasser: Poorasgari, Eskandar (VerfasserIn)
Weitere Verfasser: Farsi, Ali, Christensen, Morten Lykkegaard
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2016
Zugriff auf das übergeordnete Werk:Water science and technology : a journal of the International Association on Water Pollution Research
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Humic Substances Sewage Water Pollutants, Chemical
Beschreibung
Zusammenfassung:Membrane retention of the humic-like substances present in a soluble microbial products (SMP) suspension was studied by using a dead-end filtration system. The SMP suspension was extracted from the sludge of an enhanced biological phosphorus removal-membrane bioreactor. Our results showed that both adsorption and steric retention of the humic-like substances governed their transport through the membrane during the filtration. The adsorption, which followed pseudo-first order kinetics, did not cause substantial decline of permeate flux. The steric retention, on the other hand, formed a gel layer, which in turn led to a major decrease in the flux. The reduction of permeate flux was well predicted by cake filtration theory. Based on the adsorption and the steric retention, a new model was developed for predicting the overall membrane retention of the humic-like substances. The general trend of the modelled overall retention was in partial agreement with the experimental results
Beschreibung:Date Completed 30.08.2016
Date Revised 02.12.2018
published: Print
Citation Status MEDLINE
ISSN:0273-1223
DOI:10.2166/wst.2016.176