Monovalent cations and their influence on activated sludge floc chemistry, structure, and physical characteristics

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dc.contributor.authorKara, F.
dc.contributor.authorGurakan, G. C.
dc.contributor.authorSanin, F. D.
dc.date.accessioned2020-03-26T17:27:17Z
dc.date.available2020-03-26T17:27:17Z
dc.date.issued2008
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractMultivalent cations have been known to be important components of activated sludge floc structure due to their bridging ability of the negatively charged sites on the biopolymer network. Recently in batch systems it was found that excess concentration of monovalent cations led to the deterioration in settleability, dewaterability of sludges and effluent quality of the system. In this study, effect of influent monovalent cations (potassium and sodium) on activated sludge floc structure was investigated in semi-continuous reactors. Results revealed that the increase in concentration of both ions correlated to the general increase in total EPS concentration. The zeta potential values were affected by the cation type and dose in such a way that sludge from sodium reactors had always higher zeta potential values (higher negative charge) than the sludges from potassium reactors. Flocs from sodium reactors were more fragile and weak and the capillary suction time values of these sludges were higher compared to those from potassium reactors. The findings of this research conclude that the floc structure is significantly weakened with the increase of monovalent cations. Even though EPS is produced, it is unable to bind the floc components together. With this, the physical properties of sludge deteriorate for both cations.en_US
dc.identifier.doi10.1002/bit.21755en_US
dc.identifier.endpage239en_US
dc.identifier.issn0006-3592en_US
dc.identifier.issn1097-0290en_US
dc.identifier.issue2en_US
dc.identifier.pmid18080340en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage231en_US
dc.identifier.urihttps://dx.doi.org/10.1002/bit.21755
dc.identifier.urihttps://hdl.handle.net/20.500.12395/22521
dc.identifier.volume100en_US
dc.identifier.wosWOS:000255503200004en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherWILEY-BLACKWELLen_US
dc.relation.ispartofBIOTECHNOLOGY AND BIOENGINEERINGen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectactivated sludgeen_US
dc.subjectcapillary suction timeen_US
dc.subjectEPSen_US
dc.subjectfloc strengthen_US
dc.subjecthydrophobicityen_US
dc.subjectpotassiumen_US
dc.subjectsodiumen_US
dc.titleMonovalent cations and their influence on activated sludge floc chemistry, structure, and physical characteristicsen_US
dc.typeArticleen_US

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