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- PMID: 15137413
- WOS: WOS:000221464200015
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Article: Removal of high NO3-concentrations in saline water through autotrophic denitrification by the bacterium Thiobacillus denitrificans strain MP
Title | Removal of high NO3-concentrations in saline water through autotrophic denitrification by the bacterium Thiobacillus denitrificans strain MP |
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Authors | |
Keywords | Autotrophic denitrification Dissolved oxygen Inhibition Retention time Stoichiometry Thiobacillus denitrifications MP |
Issue Date | 2004 |
Publisher | I W A Publishing. The Journal's web site is located at http://www.iwapublishing.com/template.cfm?name=iwapwst |
Citation | Water Science And Technology, 2004, v. 49 n. 5-6, p. 105-112 How to Cite? |
Abstract | Autotrophic denitrification by Thiobacillus denitrificans MP isolated from mangrove was investigated in both a sulphur-limestone column reactor and a fermenter. More than 97.5% of the nitrate (NO3 -) in the 250 mg NO3 --N/L strong influent was removed after 14.3 hours in the column reactor. Influent NO3 - was completely depleted in the lower part of the column as the hydraulic retention time increased and a slight pH drop was also observed along the reactor column due to the exhaustion of the buffering ability of the limestone. Trace amounts of oxygen present in the lower part of the reactor column resulted in the accumulation of nitrite and subsequent inhibition of further denitrification. The species composition of the bacterial community in the higher parts of the reactor column was morphologically more diverse than in the lower part. Denitrification by T. denitrificans MP reached an optimal level when the dissolved oxygen was maintained between 1.5-2% of saturation level in the automated fermenter. The stoichiometric ratios of ΔSO4 2- produced/ΔNO3 --N removed were 6.81 and 9.32 in the reactor column and fermenter, respectively. This study suggests that efficient removal of high NO3 - concentrations in water or wastewater can be achieved using autotrophic bacteria immobilized on surfaces of sulphur granules in the column system. © IWA Publishing 2004. |
Persistent Identifier | http://hdl.handle.net/10722/150317 |
ISSN | 2023 Impact Factor: 2.5 2023 SCImago Journal Rankings: 0.554 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Gu, JD | en_US |
dc.contributor.author | Qiu, W | en_US |
dc.contributor.author | Koenig, A | en_US |
dc.contributor.author | Fan, Y | en_US |
dc.date.accessioned | 2012-06-26T06:03:16Z | - |
dc.date.available | 2012-06-26T06:03:16Z | - |
dc.date.issued | 2004 | en_US |
dc.identifier.citation | Water Science And Technology, 2004, v. 49 n. 5-6, p. 105-112 | en_US |
dc.identifier.issn | 0273-1223 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/150317 | - |
dc.description.abstract | Autotrophic denitrification by Thiobacillus denitrificans MP isolated from mangrove was investigated in both a sulphur-limestone column reactor and a fermenter. More than 97.5% of the nitrate (NO3 -) in the 250 mg NO3 --N/L strong influent was removed after 14.3 hours in the column reactor. Influent NO3 - was completely depleted in the lower part of the column as the hydraulic retention time increased and a slight pH drop was also observed along the reactor column due to the exhaustion of the buffering ability of the limestone. Trace amounts of oxygen present in the lower part of the reactor column resulted in the accumulation of nitrite and subsequent inhibition of further denitrification. The species composition of the bacterial community in the higher parts of the reactor column was morphologically more diverse than in the lower part. Denitrification by T. denitrificans MP reached an optimal level when the dissolved oxygen was maintained between 1.5-2% of saturation level in the automated fermenter. The stoichiometric ratios of ΔSO4 2- produced/ΔNO3 --N removed were 6.81 and 9.32 in the reactor column and fermenter, respectively. This study suggests that efficient removal of high NO3 - concentrations in water or wastewater can be achieved using autotrophic bacteria immobilized on surfaces of sulphur granules in the column system. © IWA Publishing 2004. | en_US |
dc.language | eng | en_US |
dc.publisher | I W A Publishing. The Journal's web site is located at http://www.iwapublishing.com/template.cfm?name=iwapwst | en_US |
dc.relation.ispartof | Water Science and Technology | en_US |
dc.subject | Autotrophic denitrification | - |
dc.subject | Dissolved oxygen | - |
dc.subject | Inhibition | - |
dc.subject | Retention time | - |
dc.subject | Stoichiometry | - |
dc.subject | Thiobacillus denitrifications MP | - |
dc.subject.mesh | Calcium Carbonate | en_US |
dc.subject.mesh | Fermentation | en_US |
dc.subject.mesh | Nitrates - Metabolism | en_US |
dc.subject.mesh | Nitrogen - Isolation & Purification - Metabolism | en_US |
dc.subject.mesh | Oxygen | en_US |
dc.subject.mesh | Sulfur | en_US |
dc.subject.mesh | Thiobacillus - Physiology | en_US |
dc.subject.mesh | Waste Disposal, Fluid - Methods | en_US |
dc.subject.mesh | Water Movements | en_US |
dc.subject.mesh | Water Purification - Methods | en_US |
dc.title | Removal of high NO3-concentrations in saline water through autotrophic denitrification by the bacterium Thiobacillus denitrificans strain MP | en_US |
dc.type | Article | en_US |
dc.identifier.email | Gu, JD:jdgu@hkucc.hku.hk | en_US |
dc.identifier.email | Koenig, A:kalbert@hkucc.hku.hk | en_US |
dc.identifier.authority | Gu, JD=rp00701 | en_US |
dc.identifier.authority | Koenig, A=rp00125 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.pmid | 15137413 | - |
dc.identifier.scopus | eid_2-s2.0-2442547215 | en_US |
dc.identifier.hkuros | 88322 | - |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-2442547215&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 49 | en_US |
dc.identifier.issue | 5-6 | en_US |
dc.identifier.spage | 105 | en_US |
dc.identifier.epage | 112 | en_US |
dc.identifier.isi | WOS:000221464200015 | - |
dc.publisher.place | United Kingdom | en_US |
dc.identifier.scopusauthorid | Gu, JD=7403129601 | en_US |
dc.identifier.scopusauthorid | Qiu, W=7202211475 | en_US |
dc.identifier.scopusauthorid | Koenig, A=7103178143 | en_US |
dc.identifier.scopusauthorid | Fan, Y=20734044200 | en_US |
dc.identifier.issnl | 0273-1223 | - |