Membrane fouling propensity after adsorption as pretreatment in rainwater a detailed organic characterisation

Membrane fouling propensity after adsorption as pretreatment in rainwater : a detailed organic characterisation

IWA Publishing 2008.

Bibliographische Detailangaben
Veröffentlicht in:Water science and technology : a journal of the International Association on Water Pollution Research. - 1986. - 58(2008), 8 vom: 07., Seite 1535-9
1. Verfasser: Sabina, L (VerfasserIn)
Weitere Verfasser: Kus, B, Shon, H-K, Kandasamy, J
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2008
Zugriff auf das übergeordnete Werk:Water science and technology : a journal of the International Association on Water Pollution Research
Schlagworte:Journal Article Membranes, Artificial Carbon 7440-44-0
Beschreibung
Zusammenfassung:IWA Publishing 2008.
Organic characterisation in rainwater was investigated in terms of dissolved organic carbon (DOC) and molecular weight distribution (MWD) after powdered activated carbon (PAC) adsorption. PAC adsorption was used as pretreatment to membrane filtration to reduce membrane fouling. The MW of organic matter in rainwater used in this study was in the range of 43,000 Da to 30 Da. Each peak of organic matter consisted of biopolymers (polysaccharides and proteins), humic and fulvic acids, building blocks, low MW acids (hydrolysates of humic substances), low MW neutrals and amphiphilics. Rainwater contained the majority of hydrophilic compounds up to 72%. PAC adsorption removed 33% of total DOC. The removal efficiencies of the hydrophobic and hydrophilic fractions after PAC adsorption were 50% and 27%, respectively. PAC adsorption was found to preferentially remove the hydrophobic fraction. The majority of the smaller MW of 1,100 Da, 820 Da, 550 Da, 90 Da and 30 Da was removed after PAC adsorption. The MFI values decreased from 1,436 s/L2 to 147 s/L2 after PAC adsorption. It was concluded that PAC adsorption can be used as a pretreatment to membrane filtration with rainwater
Beschreibung:Date Completed 23.01.2009
Date Revised 12.11.2008
published: Print
Citation Status MEDLINE
ISSN:0273-1223
DOI:10.2166/wst.2008.522