File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Characterization of soluble microbial products (SMP) under stressful conditions

TitleCharacterization of soluble microbial products (SMP) under stressful conditions
Authors
Issue Date2010
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/watres
Citation
Water Research, 2010, v. 44 n. 18, p. 5499-5509 How to Cite?
AbstractSoluble microbial products (SMP) in the wastewater treatment process not only cause fouling to the membrane, but also generate disinfection by-products (DBP) in the effluent, thus get increasing attention. In this study, SMP produced by activated sludge and isolates under different stressful conditions, i.e. starvation, salinity, heavy metals, low pH and high temperature, were characterized to investigate the effects of these conditions on the amount of SMP and their compositions. The analysis results using size exclusion chromatography (SEC), high pressure liquid chromatography (HPLC) and fluorescence excitation emission matrix (FEEM) showed that activated sludge and isolates suffered with the same stressful condition contained almost the same concentration and composition of SMP, indicating that the stressful condition instead of the microbial species played the crucial role in the production of SMP. Among of stressful conditions tested, high temperature had stimulated the production of polysaccharides and polycarboxylate-type humic acid with high hydrophilicity, which is in positive proportion to the foulants formation potential, thus should be avoided in membrane bioreactors. Low pH had promoted the generation of hydrophobic humic acid-like or protein-like organics, which had been proved as the main disinfection byproduct (DBP) precursor, thus should be avoided in the biological treatment. Starvation had less effect on SMP production as the seeding microbes had no substrates.
Persistent Identifierhttp://hdl.handle.net/10722/139030
ISSN
2015 Impact Factor: 5.991
2015 SCImago Journal Rankings: 2.772
ISI Accession Number ID
Funding AgencyGrant Number
Hong Kong General Research Fund7195/06E
National Natural Science Foundation of China50778110
Funding Information:

Dr. T. Zhang wishes to thank Hong Kong General Research Fund (7195/06E) for supporting Dr. ZP Wang with the research assistantship. This research was also partially supported by the National Natural Science Foundation of China (No. 50778110).

 

DC FieldValueLanguage
dc.contributor.authorWang, ZPen_US
dc.contributor.authorZhang, Ten_US
dc.date.accessioned2011-09-23T05:44:26Z-
dc.date.available2011-09-23T05:44:26Z-
dc.date.issued2010en_US
dc.identifier.citationWater Research, 2010, v. 44 n. 18, p. 5499-5509en_US
dc.identifier.issn0043-1354-
dc.identifier.urihttp://hdl.handle.net/10722/139030-
dc.description.abstractSoluble microbial products (SMP) in the wastewater treatment process not only cause fouling to the membrane, but also generate disinfection by-products (DBP) in the effluent, thus get increasing attention. In this study, SMP produced by activated sludge and isolates under different stressful conditions, i.e. starvation, salinity, heavy metals, low pH and high temperature, were characterized to investigate the effects of these conditions on the amount of SMP and their compositions. The analysis results using size exclusion chromatography (SEC), high pressure liquid chromatography (HPLC) and fluorescence excitation emission matrix (FEEM) showed that activated sludge and isolates suffered with the same stressful condition contained almost the same concentration and composition of SMP, indicating that the stressful condition instead of the microbial species played the crucial role in the production of SMP. Among of stressful conditions tested, high temperature had stimulated the production of polysaccharides and polycarboxylate-type humic acid with high hydrophilicity, which is in positive proportion to the foulants formation potential, thus should be avoided in membrane bioreactors. Low pH had promoted the generation of hydrophobic humic acid-like or protein-like organics, which had been proved as the main disinfection byproduct (DBP) precursor, thus should be avoided in the biological treatment. Starvation had less effect on SMP production as the seeding microbes had no substrates.-
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/watres-
dc.relation.ispartofWater Researchen_US
dc.subject.meshAlcaligenes - chemistry-
dc.subject.meshBacteria - chemistry-
dc.subject.meshBiomass-
dc.subject.meshChromatography, Gel-
dc.subject.meshStress, Physiological-
dc.titleCharacterization of soluble microbial products (SMP) under stressful conditionsen_US
dc.typeArticleen_US
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0043-1354&volume=44&issue=18&spage=5499&epage=5509&date=2010&atitle=Characterization+of+soluble+microbial+products+(SMP)+under+stressful+conditions-
dc.identifier.emailWang, ZP: wangzply@sjtu.edu.cnen_US
dc.identifier.emailZhang, T: zhangt@hku.hk-
dc.identifier.authorityZhang, T=rp00211en_US
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.watres.2010.06.067-
dc.identifier.pmid20655085-
dc.identifier.scopuseid_2-s2.0-77957326007en_US
dc.identifier.hkuros192695en_US
dc.identifier.volume44en_US
dc.identifier.issue18-
dc.identifier.spage5499en_US
dc.identifier.epage5509en_US
dc.identifier.isiWOS:000289497600038-
dc.identifier.citeulike7477527-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats