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Article: Effects of Fe2+ on sludge granulation in upflow anaerobic sludge blanket reactors

TitleEffects of Fe2+ on sludge granulation in upflow anaerobic sludge blanket reactors
Authors
KeywordsGranulation
Iron (Fe2+)
Start-Up
Upflow Anaerobic Sludge Blanket (UASB) Reactor
Issue Date2000
PublisherIWA Publishing. The Journal's web site is located at http://www.iwapublishing.com/template.cfm?name=iwapwst
Citation
Water Science and Technology, 2000, v. 41 n. 12, p. 199-205 How to Cite?
AbstractExperiments were performed in parallel using six identical UASB (upflow anaerobic sludge blanket) reactors to examine the effects of iron (Fe2+) on sludge granulation during start-up. Introduction of Fe2+ at concentrations of 300 and 450 mg/L enhanced the granulation process in UASB reactors, while dosage of Fe2+ (150 mg/L) had little effect on the sludge granulation. The Fe2+concentration in granules was nearly proportional to the influent Fe2+concentration. The specific activity of granules decreased with increasing Fe2+concentration in the feed. For high Fe2+ dosages, a large amount of minerals was deposited within the granules, and FeS and the compounds formed by iron and exopolysaccharide polymers were the main precipitates. This, along with the significant decrease in the water content in granules and the possible toxicity of high-level Fe2+accumulated inside granules, reduced bacterial specific activity. | Experiments were performed in parallel using six identical UASB (upflow anaerobic sludge blanket) reactors to examine the effects of iron (Fe2+) on sludge granulation during start-up. Introduction of Fe2+ at concentrations of 300 and 450 mg/L enhanced the granulation process in UASB reactors, while dosage of Fe2+ (150 mg/L) had little effect on the sludge granulation. The Fe2+ concentration in granules was nearly proportional to the influent Fe2+ concentration. The specific activity of granules decreased with increasing Fe2+ concentration in the feed. For high Fe2+ dosages, a large amount of minerals was deposited within the granules, and FeS and the compounds formed by iron and exopolysaccharide polymers were the main precipitates. This, along with the significant decrease in the water content in granules and the possible toxicity of high-level Fe2+ accumulated inside granules, reduced bacterial specific activity.
Persistent Identifierhttp://hdl.handle.net/10722/150148
ISSN
2015 Impact Factor: 1.064
2015 SCImago Journal Rankings: 0.469
References

 

DC FieldValueLanguage
dc.contributor.authorYu, HQen_US
dc.contributor.authorFang, HHPen_US
dc.contributor.authorTay, JHen_US
dc.date.accessioned2012-06-26T06:01:50Z-
dc.date.available2012-06-26T06:01:50Z-
dc.date.issued2000en_US
dc.identifier.citationWater Science and Technology, 2000, v. 41 n. 12, p. 199-205en_US
dc.identifier.issn0273-1223en_US
dc.identifier.urihttp://hdl.handle.net/10722/150148-
dc.description.abstractExperiments were performed in parallel using six identical UASB (upflow anaerobic sludge blanket) reactors to examine the effects of iron (Fe2+) on sludge granulation during start-up. Introduction of Fe2+ at concentrations of 300 and 450 mg/L enhanced the granulation process in UASB reactors, while dosage of Fe2+ (150 mg/L) had little effect on the sludge granulation. The Fe2+concentration in granules was nearly proportional to the influent Fe2+concentration. The specific activity of granules decreased with increasing Fe2+concentration in the feed. For high Fe2+ dosages, a large amount of minerals was deposited within the granules, and FeS and the compounds formed by iron and exopolysaccharide polymers were the main precipitates. This, along with the significant decrease in the water content in granules and the possible toxicity of high-level Fe2+accumulated inside granules, reduced bacterial specific activity. | Experiments were performed in parallel using six identical UASB (upflow anaerobic sludge blanket) reactors to examine the effects of iron (Fe2+) on sludge granulation during start-up. Introduction of Fe2+ at concentrations of 300 and 450 mg/L enhanced the granulation process in UASB reactors, while dosage of Fe2+ (150 mg/L) had little effect on the sludge granulation. The Fe2+ concentration in granules was nearly proportional to the influent Fe2+ concentration. The specific activity of granules decreased with increasing Fe2+ concentration in the feed. For high Fe2+ dosages, a large amount of minerals was deposited within the granules, and FeS and the compounds formed by iron and exopolysaccharide polymers were the main precipitates. This, along with the significant decrease in the water content in granules and the possible toxicity of high-level Fe2+ accumulated inside granules, reduced bacterial specific activity.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.subjectGranulationen_US
dc.subjectIron (Fe2+)en_US
dc.subjectStart-Upen_US
dc.subjectUpflow Anaerobic Sludge Blanket (UASB) Reactoren_US
dc.titleEffects of Fe2+ on sludge granulation in upflow anaerobic sludge blanket reactorsen_US
dc.typeArticleen_US
dc.identifier.emailYu, H: hqyu@hkucc.hku.hken_US
dc.identifier.emailFang, HHP: hrechef@hkucc.hku.hk-
dc.identifier.authorityFang, HHP=rp00115en_US
dc.description.naturelink_to_OA_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0033870077en_US
dc.identifier.hkuros51628-
dc.identifier.hkuros60216-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0033870077&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume41en_US
dc.identifier.issue12en_US
dc.identifier.spage199en_US
dc.identifier.epage205en_US
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridYu, HQ=13008678100en_US
dc.identifier.scopusauthoridFang, HH=7402542625en_US
dc.identifier.scopusauthoridTay, JH=7102544287en_US

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