Effect of hydraulic retention time and substrate availability in denitrifying bioelectrochemical systems
dc.contributor.author
dc.date.accessioned
2017-07-19T07:41:45Z
dc.date.available
2017-07-19T07:41:45Z
dc.date.issued
2017-06-29
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2053-1400
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dc.description.abstract
Denitrifying bioelectrochemical systems (BES) allow safe nitrate treatment in waters with low organic carbon content without chemical requirements and at a competitive cost. However, this technology should move towards scaling-up by improving removal rate capabilities. In this study, a novel tubular design was used to evaluate whether the hydraulic retention time and the influent nitrate concentration influence the nitrate removal rate of denitrifying BES. A nitrate consumption rate of up to 849 g N mNCC−3 d−1 was reached without accumulation of nitrites at a HRT of 28 minutes. Nitrate removal activity was evaluated under different nitrate influent concentrations and under different HRTs. Results suggested preeminence of HRT on modulating the denitrifying activity. Therefore, this study presents an innovative design for nitrate removal using denitrifying BES and it demonstrates that operation at low HRTs increases the nitrate removal rate. It suggests that an appropriate approximation of scaling-up denitrifying BES would be the implementation of compact reactors connected in series operated at low HRTs
dc.description.sponsorship
This research was financially supported by the Spanish Government (CTQ2014-53718-R and CTM2015-71982-REDT) and the University of Girona (MPCUdG2016/137)
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application/pdf
dc.language.iso
eng
dc.publisher
Royal Society of Chemistry (RSC)
dc.relation
info:eu-repo/grantAgreement/MINECO//CTQ2014-53718-R/ES/TECNOLOGIAS INNOVADORAS PARA LA MEJORA DE BIOGAS: DESDE LA INVESTIGACION BASICA A LA EVALUACION DE TECNOLOGIAS/
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Reproducció digital del document publicat a: http://dx.doi.org/10.1039/C7EW00145B
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Environmental Science: Water Research & Technology, 2017, vol. 3, p. 922-929
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Articles publicats (D-EQATA)
dc.rights
Attribution 3.0 Spain
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dc.subject
dc.title
Effect of hydraulic retention time and substrate availability in denitrifying bioelectrochemical systems
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/openAccess
dc.embargo.terms
Cap
dc.type.version
info:eu-repo/semantics/publishedVersion
dc.identifier.doi
dc.contributor.funder
dc.relation.ProjectAcronym
dc.identifier.eissn
2053-1419