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Article: The roles of calcium in sludge granulation during UASB reactor start-up

TitleThe roles of calcium in sludge granulation during UASB reactor start-up
Authors
Issue Date2001
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/watres
Citation
Water Research, 2001, v. 35 n. 4, p. 1052-1060 How to Cite?
AbstractSix upflow anaerobic sludge blanket (UASB) reactors were concurrently operated for 146 d to examine the effects of calcium on the sludge granulation process during start-up. Introduction of Ca2+ at concentrations from 150 to 300 mg/l enhanced the biomass accumulation and granulation process. The calcium concentration in the granules was nearly proportional to the calcium concentration in the feed, and calcium carbonate was the main calcium precipitate in the granules. The specific activity of granules decreased with increasing influent calcium concentration. The optimum calcium concentration for the granulation was from 150 to 300 mg/l. The addition of low-concentration calcium to the UASB reactors appeared to enhance the three steps of sludge granulation: adsorption, adhesion and multiplication, but it did not lead to a different proliferation of predominant microorganisms in the granules. © 2001 Elsevier Science Ltd. | Six upflow anaerobic sludge blanket (UASB) reactors were concurrently operated for 146 d to examine the effects of calcium on the sludge granulation process during start-up. Introduction of Ca2+ at concentrations from 150 to 300 mg/l enhanced the biomass accumulation and granulation process. The calcium concentration in the granules was nearly proportional to the calcium concentration in the feed, and calcium carbonate was the main calcium precipitate in the granules. The specific activity of granules decreased with increasing influent calcium concentration. The optimum calcium concentration for the granulation was from 150 to 300 mg/l. The addition of low-concentration calcium to the UASB reactors appeared to enhance the three steps of sludge granulation: adsorption, adhesion and multiplication, but it did not lead to a different proliferation of predominant microorganisms in the granules.
Persistent Identifierhttp://hdl.handle.net/10722/70659
ISSN
2015 Impact Factor: 5.991
2015 SCImago Journal Rankings: 2.772
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYu, HQen_HK
dc.contributor.authorTay, JHen_HK
dc.contributor.authorFang, HHPen_HK
dc.date.accessioned2010-09-06T06:24:57Z-
dc.date.available2010-09-06T06:24:57Z-
dc.date.issued2001en_HK
dc.identifier.citationWater Research, 2001, v. 35 n. 4, p. 1052-1060en_HK
dc.identifier.issn0043-1354en_HK
dc.identifier.urihttp://hdl.handle.net/10722/70659-
dc.description.abstractSix upflow anaerobic sludge blanket (UASB) reactors were concurrently operated for 146 d to examine the effects of calcium on the sludge granulation process during start-up. Introduction of Ca2+ at concentrations from 150 to 300 mg/l enhanced the biomass accumulation and granulation process. The calcium concentration in the granules was nearly proportional to the calcium concentration in the feed, and calcium carbonate was the main calcium precipitate in the granules. The specific activity of granules decreased with increasing influent calcium concentration. The optimum calcium concentration for the granulation was from 150 to 300 mg/l. The addition of low-concentration calcium to the UASB reactors appeared to enhance the three steps of sludge granulation: adsorption, adhesion and multiplication, but it did not lead to a different proliferation of predominant microorganisms in the granules. © 2001 Elsevier Science Ltd. | Six upflow anaerobic sludge blanket (UASB) reactors were concurrently operated for 146 d to examine the effects of calcium on the sludge granulation process during start-up. Introduction of Ca2+ at concentrations from 150 to 300 mg/l enhanced the biomass accumulation and granulation process. The calcium concentration in the granules was nearly proportional to the calcium concentration in the feed, and calcium carbonate was the main calcium precipitate in the granules. The specific activity of granules decreased with increasing influent calcium concentration. The optimum calcium concentration for the granulation was from 150 to 300 mg/l. The addition of low-concentration calcium to the UASB reactors appeared to enhance the three steps of sludge granulation: adsorption, adhesion and multiplication, but it did not lead to a different proliferation of predominant microorganisms in the granules.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/watresen_HK
dc.relation.ispartofWater Researchen_HK
dc.subject.meshAnaerobiosisen_HK
dc.subject.meshBiodegradation, Environmental - drug effectsen_HK
dc.subject.meshBiomassen_HK
dc.subject.meshBioreactorsen_HK
dc.subject.meshCalcium - pharmacologyen_HK
dc.subject.meshMicroscopy, Electron, Scanningen_HK
dc.subject.meshParticle Sizeen_HK
dc.subject.meshSewage - analysis - microbiologyen_HK
dc.subject.meshWaste Disposal, Fluid - instrumentation - methodsen_HK
dc.titleThe roles of calcium in sludge granulation during UASB reactor start-upen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0043-1354&volume=35 &issue=4&spage=1052 &epage= 1060&date=2001&atitle=The+roles+of+calcium+in+sludge+granulation+during+UASB+reactor+start-upen_HK
dc.identifier.emailFang, HHP:hrechef@hkucc.hku.hken_HK
dc.identifier.authorityFang, HHP=rp00115en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S0043-1354(00)00345-6en_HK
dc.identifier.pmid11235871-
dc.identifier.scopuseid_2-s2.0-0035284483en_HK
dc.identifier.hkuros60293en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0035284483&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume35en_HK
dc.identifier.issue4en_HK
dc.identifier.spage1052en_HK
dc.identifier.epage1060en_HK
dc.identifier.isiWOS:000167033400023-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridYu, HQ=13008678100en_HK
dc.identifier.scopusauthoridTay, JH=7102544287en_HK
dc.identifier.scopusauthoridFang, HHP=7402542625en_HK

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