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Article: Nitrate removal from saline water using autotrophic denitrification by the bacterium Thiobacillus denitrificans MP-1
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TitleNitrate removal from saline water using autotrophic denitrification by the bacterium Thiobacillus denitrificans MP-1
 
AuthorsZhao, Z1
Qiu, W1
Koenig, A1
Fan, X2
Gu, JD1
 
KeywordsAutotrophic denitrification
Kinetics
Nitrate removal
Thiobacillus denitrificans MP-1
 
Issue Date2004
 
PublisherSelper Ltd. The Journal's web site is located at http://www.environtechnol.co.uk
 
CitationEnvironmental Technology, 2004, v. 25 n. 10, p. 1201-1210 [How to Cite?]
 
AbstractAutotrophic denitrification of synthetic wastewater by Thiobacillus denitrificans MP-1 isolated from mangrove sediment was investigated in both up-flow packed-bed reactors and fermentor. More than 97.5% and 90% of the nitrate in inflow was removed after 8.8 and 161 hours at 250 and 195 mg 1-1 for the packed-bed reactor and fermentor system, respectively. The nitrate was quickly denitrified at very low flow rates (0.11 m h-1) for the packed-bed reactors, but as the flow rate was greater than 0.13 m 1-1, the nitrate removal rate increased as the flow rate increased. In the static fermentor system, the denitrification can be described by a secondary reaction, but at a flow rate between 1.31 to 1.49 m h-1, the reactor performance can be described using the zero-order reaction in the packed-bed reactor. As the speed increases, the zero-order reaction translates into half-order reaction as the penetration efficiency of nitrate decreases. The mass ratios between the nitrate removed and the sulfate produced were determined to be 6.81 and 9.32 in the reactor column and fermentor, respectively. The results of this study suggest that efficient removal of high concentrations of nitrate in water or wastewater can be achieved effectively using autotrophic bacteria immobilized on surfaces of sulphur granules in packed-bed reactor. © Selper Ltd, 2004.
 
ISSN0959-3330
2013 Impact Factor: 1.197
2013 SCImago Journal Rankings: 0.494
 
ISI Accession Number IDWOS:000225382900012
 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorZhao, Z
 
dc.contributor.authorQiu, W
 
dc.contributor.authorKoenig, A
 
dc.contributor.authorFan, X
 
dc.contributor.authorGu, JD
 
dc.date.accessioned2012-06-26T06:06:44Z
 
dc.date.available2012-06-26T06:06:44Z
 
dc.date.issued2004
 
dc.description.abstractAutotrophic denitrification of synthetic wastewater by Thiobacillus denitrificans MP-1 isolated from mangrove sediment was investigated in both up-flow packed-bed reactors and fermentor. More than 97.5% and 90% of the nitrate in inflow was removed after 8.8 and 161 hours at 250 and 195 mg 1-1 for the packed-bed reactor and fermentor system, respectively. The nitrate was quickly denitrified at very low flow rates (0.11 m h-1) for the packed-bed reactors, but as the flow rate was greater than 0.13 m 1-1, the nitrate removal rate increased as the flow rate increased. In the static fermentor system, the denitrification can be described by a secondary reaction, but at a flow rate between 1.31 to 1.49 m h-1, the reactor performance can be described using the zero-order reaction in the packed-bed reactor. As the speed increases, the zero-order reaction translates into half-order reaction as the penetration efficiency of nitrate decreases. The mass ratios between the nitrate removed and the sulfate produced were determined to be 6.81 and 9.32 in the reactor column and fermentor, respectively. The results of this study suggest that efficient removal of high concentrations of nitrate in water or wastewater can be achieved effectively using autotrophic bacteria immobilized on surfaces of sulphur granules in packed-bed reactor. © Selper Ltd, 2004.
 
dc.description.natureLink_to_subscribed_fulltext
 
dc.identifier.citationEnvironmental Technology, 2004, v. 25 n. 10, p. 1201-1210 [How to Cite?]
 
dc.identifier.epage1210
 
dc.identifier.hkuros98024
 
dc.identifier.isiWOS:000225382900012
 
dc.identifier.issn0959-3330
2013 Impact Factor: 1.197
2013 SCImago Journal Rankings: 0.494
 
dc.identifier.issue10
 
dc.identifier.pmid15551834
 
dc.identifier.scopuseid_2-s2.0-9444257489
 
dc.identifier.spage1201
 
dc.identifier.urihttp://hdl.handle.net/10722/150680
 
dc.identifier.volume25
 
dc.languageeng
 
dc.publisherSelper Ltd. The Journal's web site is located at http://www.environtechnol.co.uk
 
dc.publisher.placeUnited Kingdom
 
dc.relation.ispartofEnvironmental Technology
 
dc.relation.referencesReferences in Scopus
 
dc.subject.meshBioreactors
 
dc.subject.meshNitrates - Isolation & Purification
 
dc.subject.meshSodium Chloride
 
dc.subject.meshThiobacillus - Physiology
 
dc.subject.meshWaste Disposal, Fluid - Methods
 
dc.subject.meshWater - Chemistry
 
dc.subject.meshWater Movements
 
dc.subjectAutotrophic denitrification
 
dc.subjectKinetics
 
dc.subjectNitrate removal
 
dc.subjectThiobacillus denitrificans MP-1
 
dc.titleNitrate removal from saline water using autotrophic denitrification by the bacterium Thiobacillus denitrificans MP-1
 
dc.typeArticle
 
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<contributor.author>Gu, JD</contributor.author>
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<description.abstract>Autotrophic denitrification of synthetic wastewater by Thiobacillus denitrificans MP-1 isolated from mangrove sediment was investigated in both up-flow packed-bed reactors and fermentor. More than 97.5% and 90% of the nitrate in inflow was removed after 8.8 and 161 hours at 250 and 195 mg 1-1 for the packed-bed reactor and fermentor system, respectively. The nitrate was quickly denitrified at very low flow rates (0.11 m h-1) for the packed-bed reactors, but as the flow rate was greater than 0.13 m 1-1, the nitrate removal rate increased as the flow rate increased. In the static fermentor system, the denitrification can be described by a secondary reaction, but at a flow rate between 1.31 to 1.49 m h-1, the reactor performance can be described using the zero-order reaction in the packed-bed reactor. As the speed increases, the zero-order reaction translates into half-order reaction as the penetration efficiency of nitrate decreases. The mass ratios between the nitrate removed and the sulfate produced were determined to be 6.81 and 9.32 in the reactor column and fermentor, respectively. The results of this study suggest that efficient removal of high concentrations of nitrate in water or wastewater can be achieved effectively using autotrophic bacteria immobilized on surfaces of sulphur granules in packed-bed reactor. &#169; Selper Ltd, 2004.</description.abstract>
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Author Affiliations
  1. The University of Hong Kong
  2. The Macao Water Supply Co Ltd