The role of extracellular exopolymers in the removal of phosphorus from activated slugde

dc.contributor.authorCloete, T.E. (Thomas Eugene), 1958-
dc.contributor.authorOosthuizen, Daniël Jacobus
dc.contributor.emaileugene.cloete@up.ac.zaen
dc.date.accessioned2007-10-08T06:49:44Z
dc.date.available2007-10-08T06:49:44Z
dc.date.issued2001-10
dc.description.abstractBiological phosphorus removal in activated sludge systems is thought to be a result of the action of polyphosphate accumulating organisms (PAO). However, not all phosphorus removed can be accounted for by PAO. A method for the qualitative in situ characterization of PAO cell clusters and closely associated extracellular exopolymers (EPS) is described. X-ray microanalysis was performed on samples of two activated sludge plants situated in Pretoria, South Africa. Analysis was done by means of scanning electron microscopy combined with energy dispersive spectrometry (EDS). Cell clusters with associated EPS, on average, contained between 57% and 59% phosphorus, while EPS alone contained, on average, between 27% and 30% phosphorus. Results suggest that phosphorus removal in activated sludge might be due not only to PAO, but also by EPS acting as a phosphorus reservoir.en
dc.format.extent122884 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.citationCloete, TE & Oosthuizen, DJ 2001, 'The role of extracellular exopolymers in the removal of phosphorus from activated slugde', Water Research, vol. 35, no. 15, pp. 3595-3598. [http://www.sciencedirect.com/science/journal/00431354]en
dc.identifier.issn0043-1354
dc.identifier.other10.1016/S0043-1354(01)00093-8
dc.identifier.urihttp://hdl.handle.net/2263/3691
dc.language.isoenen
dc.publisherElsevieren
dc.rightsElsevieren
dc.subjectEDSen
dc.subjectWastewateren
dc.subjectSEM (Structural equation modeling)en
dc.subjectExtracellular exopolymers
dc.subjectActivated sludge process (Sewage purification)
dc.subjectEnergy dispersive x-ray spectroscopy
dc.subject.lcshSewage -- Purification -- Activated sludge process -- South Africa
dc.subject.lcshMicrobiological chemistry
dc.subject.lcshPhosphorus
dc.subject.lcshSludge bulking
dc.subject.lcshPolyphosphates
dc.subject.lcshSewage -- Purification -- Biological treatment -- South Africa
dc.subject.lcshX-ray microanalysis
dc.subject.lcshScanning electron microscopy
dc.subject.lcshSewage disposal plants -- South Africa -- Pretoria
dc.titleThe role of extracellular exopolymers in the removal of phosphorus from activated slugdeen
dc.typePostprint Articleen

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