Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/1401

TitleA new method for extraction of exopolymers from activated sludges
Author(s)Azeredo, Joana
Oliveira, Rosário
Lazarova, V.
KeywordsActivated sludge
Biopolymer extraction
Exopolymers
Glutaraldehyde
Ion exchange
Polysaccharides
Proteins
Sonication
Vapor
Issue date1998
PublisherElsevier Science
JournalWater Science and Technology
Citation"Water science and technology". ISSN 0273-1223. 37:4/5 (1998) 367-370.
Series/Report no.1998;05
Abstract(s)The exopolymeric matrix that surrounds the biomass greatly contributes to the efficiency of activated sludge systems. To study the composition of this matrix a preliminary extraction method is required. In this work three extraction methods (vapor, sonication and combined treatment by sonication and Dowex resin) were used and compared with a new method which uses glutaraldehyde. The extraction effectiveness was estimated by measuring the total protein, the total organic carbon in the extracted solutions and by determining the monosaccharide constituents of the extracted polysaccharides. The proposed new method proved to be the most suitable because it extracted a great quantity of organic matter without disrupting the cells.
TypeArticle
URIhttp://hdl.handle.net/1822/1401
DOI10.1016/S0273-1223(98)00132-2
ISSN0273-1223
Peer-Reviewedyes
AccessOpen access
Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series

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