Denitrifying capabilities of Tetrasphaera and their contribution towards nitrous oxide production in enhanced biological phosphorus removal processes
dc.contributor.author
dc.date.accessioned
2019-03-29T07:25:24Z
dc.date.available
2019-03-29T07:25:24Z
dc.date.issued
2018-06-15
dc.identifier.issn
0043-1354
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dc.description.abstract
Denitrifying enhanced biological phosphorus removal (EBPR) systems can be an efficient means of removing phosphate (P) and nitrate (NO3−) with low carbon source and oxygen requirements. Tetrasphaera is one of the most abundant polyphosphate accumulating organisms present in EBPR systems, but their capacity to achieve denitrifying EBPR has not previously been determined. An enriched Tetrasphaera culture, comprising over 80% of the bacterial biovolume was obtained in this work. Despite the denitrification capacity of Tetrasphaera, this culture achieved only low levels of anoxic P-uptake. Batch tests with different combinations of NO3−, nitrite (NO2−) and nitrous oxide (N2O) revealed lower N2O accumulation by Tetrasphaera as compared to Accumulibacter and Competibacter when multiple electron acceptors were added. Electron competition was observed during the addition of multiple nitrogen electron acceptors species, where P uptake appeared to be slightly favoured over glycogen production in these situations. This study increases our understanding of the role of Tetrasphaera-related organisms in denitrifying EBPR systems
dc.description.sponsorship
The authors thank the Portuguese Fundação para a Ciência e Tecnologia (UID/Multi/04378/2013,
AMB/120581/2010), UCIBIO (FCT/MEC UID/Multi/04378/2013, POCI-01-0145-FEDER-007728), the
European Commission (Water JPI project 196 (WaterWorks2014 ERA-NET Co-funded Call): “Smart
decentralized water management through a dynamic integration of technologies (Watintech)”) and the
Spanish Government through project CTM2015-66892-R for financing. Ricardo Marques acknowledges
the PhD grant (SFRH/BD/74515/2010) provided by the Portuguese Fundação para a Ciência e Tecnologia.
Spanish and Portuguese Governments are acknowledged for Acciones Integradas (PRI-AIBPT-2011-1232)
and Luso-Espanhola action E-61/12. The European Commission is also acknowledged through COST
action ES1202 (Water 2020). A. Ribera-Guardia acknowledge the FPIPhD grant (BES-2012-052753)
provided by the Spanish Government
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.relation
MINECO/PE 2016-2019/CTM2015-66892-R
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Versió postprint del document publicat a: https://doi.org/10.1016/j.watres.2018.03.010
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© Water Research, 2018, vol. 137, p. 262-272
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Articles publicats (ICRA)
dc.rights
Reconeixement-NoComercial-SenseObraDerivada 4.0 Internacional
dc.rights.uri
dc.subject
dc.title
Denitrifying capabilities of Tetrasphaera and their contribution towards nitrous oxide production in enhanced biological phosphorus removal processes
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/openAccess
dc.date.embargoEndDate
info:eu-repo/date/embargoEnd/2020-06-15
dc.type.version
info:eu-repo/semantics/acceptedVersion
dc.identifier.doi
dc.contributor.funder
dc.type.peerreviewed
peer-reviewed
dc.identifier.eissn
1879-2448