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Article: Autotrophic denitrification of high-salinity wastewater using elemental sulfur: Batch tests

TitleAutotrophic denitrification of high-salinity wastewater using elemental sulfur: Batch tests
Authors
KeywordsAutotrophic Denitrification
Coal Power Plant
Elemental Sulfur
Flue Gas Desulfurization Wash Water
High-Salinity Wastewater
Inhibition
Nitrate Removal
Toxic Effect
Issue Date2004
PublisherWater Environment Federation. The Journal's web site is located at http://www.weronline.org
Citation
Water Environment Research, 2004, v. 76 n. 1, p. 37-46 How to Cite?
AbstractThe feasibility of autotrophic denitrification of a high-salinity wastewater using sulfur-oxidizing autotrophic denitrificants was studied. These autotrophic bacteria oxidize elemental sulfur to sulfate while reducing nitrate to elemental nitrogen gas, thereby eliminating the need for the addition of organic carbon compounds. A series of bench-scale batch tests was performed with synthetic and actual flue gas desulfurization (FGD) wastewater to examine the effects of various environmental and operational factors such as temperature, pH, high salinity, and potentially toxic substances on the rate of autotrophic denitrification using elemental sulfur. Specific denitrification rates of 6 to 8 mg nitrate-nitrogen (NO 3 --N)/g volatile suspended solids (VSS)·h were obtained. The highest denitrification rates were found between pH 7.0 and 8.0 and a temperature of 30°C. The denitrification rate started to decrease above an osmotic pressure of 19 atm (approximately 70% of seawater), independent of the type of salt ions, and amounted to approximately 70% activity at the concentration of seawater. Polyphosphate or pyrophosphate could be used as the source of phosphorus instead of orthophosphate because the latter caused immediate calcium phosphate precipitation in the FGD wastewater. Inhibiting factors attributed to inorganic or organic compounds originating from coal combustion were discussed.
Persistent Identifierhttp://hdl.handle.net/10722/150325
ISSN
2015 Impact Factor: 0.659
2015 SCImago Journal Rankings: 0.334
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorKoenig, Aen_US
dc.contributor.authorLiu, Len_US
dc.date.accessioned2012-06-26T06:03:21Z-
dc.date.available2012-06-26T06:03:21Z-
dc.date.issued2004en_US
dc.identifier.citationWater Environment Research, 2004, v. 76 n. 1, p. 37-46en_US
dc.identifier.issn1061-4303en_US
dc.identifier.urihttp://hdl.handle.net/10722/150325-
dc.description.abstractThe feasibility of autotrophic denitrification of a high-salinity wastewater using sulfur-oxidizing autotrophic denitrificants was studied. These autotrophic bacteria oxidize elemental sulfur to sulfate while reducing nitrate to elemental nitrogen gas, thereby eliminating the need for the addition of organic carbon compounds. A series of bench-scale batch tests was performed with synthetic and actual flue gas desulfurization (FGD) wastewater to examine the effects of various environmental and operational factors such as temperature, pH, high salinity, and potentially toxic substances on the rate of autotrophic denitrification using elemental sulfur. Specific denitrification rates of 6 to 8 mg nitrate-nitrogen (NO 3 --N)/g volatile suspended solids (VSS)·h were obtained. The highest denitrification rates were found between pH 7.0 and 8.0 and a temperature of 30°C. The denitrification rate started to decrease above an osmotic pressure of 19 atm (approximately 70% of seawater), independent of the type of salt ions, and amounted to approximately 70% activity at the concentration of seawater. Polyphosphate or pyrophosphate could be used as the source of phosphorus instead of orthophosphate because the latter caused immediate calcium phosphate precipitation in the FGD wastewater. Inhibiting factors attributed to inorganic or organic compounds originating from coal combustion were discussed.en_US
dc.languageengen_US
dc.publisherWater Environment Federation. The Journal's web site is located at http://www.weronline.orgen_US
dc.relation.ispartofWater Environment Researchen_US
dc.subjectAutotrophic Denitrificationen_US
dc.subjectCoal Power Planten_US
dc.subjectElemental Sulfuren_US
dc.subjectFlue Gas Desulfurization Wash Wateren_US
dc.subjectHigh-Salinity Wastewateren_US
dc.subjectInhibitionen_US
dc.subjectNitrate Removalen_US
dc.subjectToxic Effecten_US
dc.titleAutotrophic denitrification of high-salinity wastewater using elemental sulfur: Batch testsen_US
dc.typeArticleen_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.doi10.2175/106143004X141564en_US
dc.identifier.scopuseid_2-s2.0-2542628964en_US
dc.identifier.hkuros92778-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-2542628964&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume76en_US
dc.identifier.issue1en_US
dc.identifier.spage37en_US
dc.identifier.epage46en_US
dc.identifier.isiWOS:000220013400006-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridKoenig, A=7103178143en_US
dc.identifier.scopusauthoridLiu, L=23980547100en_US

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