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Conference Paper: Autotrophic denitrification of landfill leachate using elemental sulphur

TitleAutotrophic denitrification of landfill leachate using elemental sulphur
Authors
KeywordsAutotrophic Denitrification
Biofilm
Elemental Sulphur
Landfill
Leachate Treatment
Nitrate Removal
Thiobacillus Denitrificans
Issue Date1996
PublisherIWA Publishing. The Journal's web site is located at http://www.iwapublishing.com/template.cfm?name=iwapwst
Citation
Proceedings of the 18th Biennial Conference of the International Association on Water Quality (IAWQ), Singapore, 23-28 June 1996. In Water Science and Technology, 1996, v. 34 n. 5-6, pt. 3, p. 469-476 How to Cite?
AbstractOne of the most economical means of nitrogen removal from leachate is biological treatment by nitrification, followed by heterotrophic denitrification. An alternative biological denitrification process is autotrophic denitrification using Thiobacillus denitrificans. This autotrophic bacteria oxidizes elemental sulphur to sulphate while reducing nitrate to elemental nitrogen gas, thereby eliminating the need for addition of organic carbon compounds. For this study, pilot-scale elemental sulphur packed bed columns with fixed-film denitrification have been selected as the most suitable treatment process. The effect of hydraulic retention time as well as the effect of concentration and loading rate of nitrate on nitrate removal efficiency as a function of sulphur particle size were determined. The results indicate that (i) autotrophic denitrification can effectively remove nitrate from synthetic and actual nitrified leachate at concentrations much higher than hitherto reported; (ii) the minimum hydraulic retention time necessary for complete denitrification depends on sulphur particle size; (iii) the maximum area loading rate, in g NO3 --N/m2·d, appears to be the process limiting factor and is practically independent of sulphur particle size; and (iv) the observed stoichiometric relationships compare well with those previously reported.
Persistent Identifierhttp://hdl.handle.net/10722/152103
ISSN
2015 Impact Factor: 1.064
2015 SCImago Journal Rankings: 0.469

 

DC FieldValueLanguage
dc.contributor.authorKoenig, Aen_US
dc.contributor.authorLiu, LHen_US
dc.date.accessioned2012-06-26T06:35:12Z-
dc.date.available2012-06-26T06:35:12Z-
dc.date.issued1996en_US
dc.identifier.citationProceedings of the 18th Biennial Conference of the International Association on Water Quality (IAWQ), Singapore, 23-28 June 1996. In Water Science and Technology, 1996, v. 34 n. 5-6, pt. 3, p. 469-476en_US
dc.identifier.issn0273-1223en_US
dc.identifier.urihttp://hdl.handle.net/10722/152103-
dc.description.abstractOne of the most economical means of nitrogen removal from leachate is biological treatment by nitrification, followed by heterotrophic denitrification. An alternative biological denitrification process is autotrophic denitrification using Thiobacillus denitrificans. This autotrophic bacteria oxidizes elemental sulphur to sulphate while reducing nitrate to elemental nitrogen gas, thereby eliminating the need for addition of organic carbon compounds. For this study, pilot-scale elemental sulphur packed bed columns with fixed-film denitrification have been selected as the most suitable treatment process. The effect of hydraulic retention time as well as the effect of concentration and loading rate of nitrate on nitrate removal efficiency as a function of sulphur particle size were determined. The results indicate that (i) autotrophic denitrification can effectively remove nitrate from synthetic and actual nitrified leachate at concentrations much higher than hitherto reported; (ii) the minimum hydraulic retention time necessary for complete denitrification depends on sulphur particle size; (iii) the maximum area loading rate, in g NO3 --N/m2·d, appears to be the process limiting factor and is practically independent of sulphur particle size; and (iv) the observed stoichiometric relationships compare well with those previously reported.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.subjectAutotrophic Denitrificationen_US
dc.subjectBiofilmen_US
dc.subjectElemental Sulphuren_US
dc.subjectLandfillen_US
dc.subjectLeachate Treatmenten_US
dc.subjectNitrate Removalen_US
dc.subjectThiobacillus Denitrificansen_US
dc.titleAutotrophic denitrification of landfill leachate using elemental sulphuren_US
dc.typeConference_Paperen_US
dc.identifier.emailKoenig, A: kalbert@hkucc.hku.hken_US
dc.identifier.authorityKoenig, A=rp00125en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/0273-1223(96)00680-4en_US
dc.identifier.scopuseid_2-s2.0-0029858951en_US
dc.identifier.hkuros20296-
dc.identifier.volume34en_US
dc.identifier.issue5-6, pt. 3en_US
dc.identifier.spage469en_US
dc.identifier.epage476en_US
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridKoenig, A=7103178143en_US
dc.identifier.scopusauthoridLiu, LH=23980547100en_US
dc.customcontrol.immutablesml 151116 - merged-

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