Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/10211
Registo completo
Campo DC | Valor | Idioma |
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dc.contributor.author | Cortez, Susana | - |
dc.contributor.author | Teixeira, P. | - |
dc.contributor.author | Oliveira, Rosário | - |
dc.contributor.author | Mota, M. | - |
dc.date.accessioned | 2010-01-27T11:50:25Z | - |
dc.date.available | 2010-01-27T11:50:25Z | - |
dc.date.issued | 2009-12 | - |
dc.identifier.citation | "Environmental Technology". ISSN 0959-3330. 30:13 (Dec. 2009) 1381-1389. | por |
dc.identifier.issn | 0959-3330 | por |
dc.identifier.uri | https://hdl.handle.net/1822/10211 | - |
dc.description.abstract | The presence of nitrate in water and wastewater is a serious environmental problem. Anoxic rotating biological contactors (RBC) are a promising novel technology for nitrate removal. In this study the effect of two carbon/nitrogen (C/N) molar ratios (1.5 and 3.0) on denitrification, using acetate as a carbon source, were investigated in an anoxic bench-scale RBC, treating synthetic wastewater. The effect of different hydraulic retention times (HRTs) and different nitrogen and carbon influent concentrations on the reactor performance, at constant C/N, were also analysed. The average removal efficiency in terms of nitrogen-nitrate was about 90.4% at C/N = 1.5, lowering to 73.7% at C/ N = 3.0. Considering carbon-acetate removal, overall efficiencies of 82.0% and 63.6% were attained at C/N ratios of 1.5 and 3.0, respectively. The increase in nitrogen-nitrate (from 50 to 100 mg N-NO3−L−1) and carbon-acetate influent concentrations and the decrease in HRT, keeping C/N constant, had a slight negative effect in terms of substrate removal. It was found that, for the tested conditions, the use of C/N = 1.5 is advantageous to denitrification. The anoxic RBC was significantly effective at reducing nitrate concentrations within a relatively short HRT. These reactors may be a feasible option for the treatment of nitrate-rich wastewaters. | por |
dc.description.sponsorship | Fundação para a Ciência e a Tecnologia (FCT) | por |
dc.language.iso | eng | por |
dc.publisher | Taylor and Francis | por |
dc.rights | openAccess | por |
dc.subject | Anoxic rotating biological contactor | por |
dc.subject | Biofilm | por |
dc.subject | Carbon to nitrogen ratio | por |
dc.subject | Denitrification | por |
dc.title | Effect of operating parameters on denitrification in an anoxic rotating biological contactor | por |
dc.type | article | por |
dc.peerreviewed | yes | por |
sdum.number | 13 | por |
sdum.pagination | 1381-389 | por |
sdum.publicationstatus | published | por |
sdum.volume | 30 | por |
oaire.citationStartPage | 1381 | por |
oaire.citationEndPage | 1389 | por |
oaire.citationIssue | 13 | por |
oaire.citationVolume | 30 | por |
dc.identifier.doi | 10.1080/09593330903156490 | por |
dc.identifier.pmid | 20088202 | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Environmental Technology | por |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Cortez_ET.pdf | 443,33 kB | Adobe PDF | Ver/Abrir |