File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Conference Paper: Surface charge and extracellular polymer of sludge in the anaerobic degradation process

TitleSurface charge and extracellular polymer of sludge in the anaerobic degradation process
Authors
KeywordsAnaerobic
Carbohydrate
Extracellular Polymer
Protein
Sludge Granulation
Surface Charge
Issue Date1996
PublisherIWA Publishing. The Journal's web site is located at http://www.iwapublishing.com/template.cfm?name=iwapwst
Citation
The 18th Biennial Conference of the International Association on Water Quality, Singapore, 23-28 June 1996. In Water Science And Technology, 1996, v. 34 n. 5-6, pt 3, p. 309-316 How to Cite?
AbstractChanges of surface charge and extracellular polymer (ECP) content were investigated in batch experiments for three anaerobic sludges, each of which had been enriched at 35°C and pH 6.9-7.3 for more than 40 batches using propionate, butyrate and glucose, individually, as the sole substrate. Results showed that both ECP and the negative surface charge were dependent on the growth phase of microorganisms. They increased at the beginning of all batches when the microorganisms were in the prolific-growth phase, having high substrate concentration and food-to-microorganisms ratio. Both later gradually returned to their initial levels when the microorganisms were in the declined-growth phase, as the substrate became depleted. The negative surface charge increased linearly with the total-ECP content in all series with slopes of 0.0187, 0.0212 and 0.0157 meq/mg-total-ECP for sludge degrading propionate, butyrate and glucose, respectively. The change of surface charge for the first two sludges was mainly due to the increase of proteinaceous fraction of ECP; but, for glucose-degrading sludge, that could be due to the increases of both proteinaceous and carbohydrate fractions of ECP. The negative-charged nature of anaerobic sludge implies that cations should be able to promote granulation of anaerobic sludge. | Changes of surface charge and extracellular polymer (ECP) content were investigated in batch experiments for three anaerobic sludges, each of which had been enriched at 35 °C and pH 6.9-7.3 for more than 40 batches using propionate, butyrate and glucose, individually, as the sole substrate. Results showed that both ECP and the negative surface charge were dependent on the growth phase of microorganisms. They increased at the beginning of all batches when the microorganisms were in the prolific-growth phase, having high substrate concentration and food-to-microorganisms ratio. Both later gradually returned to their initial levels when the microorganisms were in the declined-growth phase, as the substrate became depleted. The negative surface charge increased linearly with the total-ECP content in all series with slopes of 0.0187, 0.0212 and 0.0157 meq/mg-total-ECP for sludge degrading propionate, butyrate and glucose, respectively. The change of surface charge for the first two sludges was mainly due to the increase of proteinaceous fraction of ECP; but, for glucose-degrading sludge, that could be due to the increases of both proteinaceous and carbohydrate fractions of ECP. The negative-charged nature of anaerobic sludge implies that cations should be able to promote granulation of anaerobic sludge.
Persistent Identifierhttp://hdl.handle.net/10722/152104
ISSN
2015 Impact Factor: 1.064
2015 SCImago Journal Rankings: 0.469

 

DC FieldValueLanguage
dc.contributor.authorJia, XSen_US
dc.contributor.authorFang, HHPen_US
dc.contributor.authorFurumai, Hen_US
dc.date.accessioned2012-06-26T06:35:12Z-
dc.date.available2012-06-26T06:35:12Z-
dc.date.issued1996en_US
dc.identifier.citationThe 18th Biennial Conference of the International Association on Water Quality, Singapore, 23-28 June 1996. In Water Science And Technology, 1996, v. 34 n. 5-6, pt 3, p. 309-316en_US
dc.identifier.issn0273-1223en_US
dc.identifier.urihttp://hdl.handle.net/10722/152104-
dc.description.abstractChanges of surface charge and extracellular polymer (ECP) content were investigated in batch experiments for three anaerobic sludges, each of which had been enriched at 35°C and pH 6.9-7.3 for more than 40 batches using propionate, butyrate and glucose, individually, as the sole substrate. Results showed that both ECP and the negative surface charge were dependent on the growth phase of microorganisms. They increased at the beginning of all batches when the microorganisms were in the prolific-growth phase, having high substrate concentration and food-to-microorganisms ratio. Both later gradually returned to their initial levels when the microorganisms were in the declined-growth phase, as the substrate became depleted. The negative surface charge increased linearly with the total-ECP content in all series with slopes of 0.0187, 0.0212 and 0.0157 meq/mg-total-ECP for sludge degrading propionate, butyrate and glucose, respectively. The change of surface charge for the first two sludges was mainly due to the increase of proteinaceous fraction of ECP; but, for glucose-degrading sludge, that could be due to the increases of both proteinaceous and carbohydrate fractions of ECP. The negative-charged nature of anaerobic sludge implies that cations should be able to promote granulation of anaerobic sludge. | Changes of surface charge and extracellular polymer (ECP) content were investigated in batch experiments for three anaerobic sludges, each of which had been enriched at 35 °C and pH 6.9-7.3 for more than 40 batches using propionate, butyrate and glucose, individually, as the sole substrate. Results showed that both ECP and the negative surface charge were dependent on the growth phase of microorganisms. They increased at the beginning of all batches when the microorganisms were in the prolific-growth phase, having high substrate concentration and food-to-microorganisms ratio. Both later gradually returned to their initial levels when the microorganisms were in the declined-growth phase, as the substrate became depleted. The negative surface charge increased linearly with the total-ECP content in all series with slopes of 0.0187, 0.0212 and 0.0157 meq/mg-total-ECP for sludge degrading propionate, butyrate and glucose, respectively. The change of surface charge for the first two sludges was mainly due to the increase of proteinaceous fraction of ECP; but, for glucose-degrading sludge, that could be due to the increases of both proteinaceous and carbohydrate fractions of ECP. The negative-charged nature of anaerobic sludge implies that cations should be able to promote granulation of anaerobic sludge.en_US
dc.languageengen_US
dc.publisherIWA Publishing. The Journal's web site is located at http://www.iwapublishing.com/template.cfm?name=iwapwsten_US
dc.relation.ispartofWater Science and Technologyen_US
dc.subjectAnaerobicen_US
dc.subjectCarbohydrateen_US
dc.subjectExtracellular Polymeren_US
dc.subjectProteinen_US
dc.subjectSludge Granulationen_US
dc.subjectSurface Chargeen_US
dc.titleSurface charge and extracellular polymer of sludge in the anaerobic degradation processen_US
dc.typeConference_Paperen_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.doi10.1016/0273-1223(96)00660-9en_US
dc.identifier.scopuseid_2-s2.0-0029910857en_US
dc.identifier.volume34en_US
dc.identifier.issue5-6, pt 3en_US
dc.identifier.spage309en_US
dc.identifier.epage316en_US
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridJia, XS=7201933791en_US
dc.identifier.scopusauthoridFang, HHP=7402542625en_US
dc.identifier.scopusauthoridFurumai, H=7003360137en_US
dc.customcontrol.immutablesml 151113 - merged-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats