File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Influences of extracellular polymeric substances (EPS) on flocculation, settling, and dewatering of activated sludge

TitleInfluences of extracellular polymeric substances (EPS) on flocculation, settling, and dewatering of activated sludge
Authors
KeywordsActivated Sludge
Dewatering
Digestion
Eps
Flocculation
Hydrophobicity
Review
Settling
Srt
Surface Charge
Zeta Potential
Issue Date2003
PublisherTaylor & Francis Inc. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/10643389.asp
Citation
Critical Reviews In Environmental Science And Technology, 2003, v. 33 n. 3, p. 237-273 How to Cite?
AbstractResults in over 200 publications related to constituents, quantities, and characteristics of extracellular polymeric substances (EPS) in activated sludge and their influences on sludge flocculation, settling, and dewatering are compiled and analyzed. Constituents and quantities of EPS are strongly dependent on the extraction process. Most results show that EPS in activated sludge comprise substantially more proteins than carbohydrates. EPS and sludge flocs carry negative zeta potentials and negative charge. Sludge hydrophobicity increases with protent content of the EPS, and an increased hydrophobicity generally leads to a better flocculation. Most data show that sludge settles less well, as measured by sludge volume index, with increased amount of EPS. Sludge settling and dewatering characteristics are affected by the zeta potential, surface charge, and hydrophobicity, as well as the presence of multivalent mineral cations. Process conditions of activated sludge such as sludge retention time, dissolved oxygen, and nutrient levels affect the EPS properties and, thus, the sludge flocculation and settling characteristics. The effects of EPS quantities, ratio of protein and carbohydrate in EPS, sludge digestion, mineral cations, chelating reagent, nutrient level, and pretreatment on sludge dewaterability are discussed.
Persistent Identifierhttp://hdl.handle.net/10722/150248
ISSN
2015 Impact Factor: 4.0
2015 SCImago Journal Rankings: 1.722
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLiu, Yen_US
dc.contributor.authorFang, HHPen_US
dc.date.accessioned2012-06-26T06:02:45Z-
dc.date.available2012-06-26T06:02:45Z-
dc.date.issued2003en_US
dc.identifier.citationCritical Reviews In Environmental Science And Technology, 2003, v. 33 n. 3, p. 237-273en_US
dc.identifier.issn1064-3389en_US
dc.identifier.urihttp://hdl.handle.net/10722/150248-
dc.description.abstractResults in over 200 publications related to constituents, quantities, and characteristics of extracellular polymeric substances (EPS) in activated sludge and their influences on sludge flocculation, settling, and dewatering are compiled and analyzed. Constituents and quantities of EPS are strongly dependent on the extraction process. Most results show that EPS in activated sludge comprise substantially more proteins than carbohydrates. EPS and sludge flocs carry negative zeta potentials and negative charge. Sludge hydrophobicity increases with protent content of the EPS, and an increased hydrophobicity generally leads to a better flocculation. Most data show that sludge settles less well, as measured by sludge volume index, with increased amount of EPS. Sludge settling and dewatering characteristics are affected by the zeta potential, surface charge, and hydrophobicity, as well as the presence of multivalent mineral cations. Process conditions of activated sludge such as sludge retention time, dissolved oxygen, and nutrient levels affect the EPS properties and, thus, the sludge flocculation and settling characteristics. The effects of EPS quantities, ratio of protein and carbohydrate in EPS, sludge digestion, mineral cations, chelating reagent, nutrient level, and pretreatment on sludge dewaterability are discussed.en_US
dc.languageengen_US
dc.publisherTaylor & Francis Inc. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/10643389.aspen_US
dc.relation.ispartofCritical Reviews in Environmental Science and Technologyen_US
dc.subjectActivated Sludgeen_US
dc.subjectDewateringen_US
dc.subjectDigestionen_US
dc.subjectEpsen_US
dc.subjectFlocculationen_US
dc.subjectHydrophobicityen_US
dc.subjectReviewen_US
dc.subjectSettlingen_US
dc.subjectSrten_US
dc.subjectSurface Chargeen_US
dc.subjectZeta Potentialen_US
dc.titleInfluences of extracellular polymeric substances (EPS) on flocculation, settling, and dewatering of activated sludgeen_US
dc.typeArticleen_US
dc.identifier.emailFang, HHP:hrechef@hkucc.hku.hken_US
dc.identifier.authorityFang, HHP=rp00115en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1080/10643380390814479en_US
dc.identifier.scopuseid_2-s2.0-0043074899en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0043074899&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume33en_US
dc.identifier.issue3en_US
dc.identifier.spage237en_US
dc.identifier.epage273en_US
dc.identifier.isiWOS:000184755700001-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridLiu, Y=36013132500en_US
dc.identifier.scopusauthoridFang, HHP=7402542625en_US

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats