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Nitrite inhibition of microalgae induced by the competition between microalgae and nitrifying bacteria

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Nitrite inhibition of microalgae induced by the competition between microalgae and nitrifying bacteria

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dc.contributor.author Gonzalez-Camejo, Josue es_ES
dc.contributor.author Montero, P. es_ES
dc.contributor.author Aparicio, S. es_ES
dc.contributor.author Ruano, M. V. es_ES
dc.contributor.author Borras, L. es_ES
dc.contributor.author Seco, A. es_ES
dc.contributor.author Barat, Ramón es_ES
dc.date.accessioned 2021-02-18T04:32:15Z
dc.date.available 2021-02-18T04:32:15Z
dc.date.issued 2020-04-01 es_ES
dc.identifier.issn 0043-1354 es_ES
dc.identifier.uri http://hdl.handle.net/10251/161700
dc.description.abstract [EN] Outdoor microalgae cultivation systems treating anaerobic membrane bioreactor (AnMBR) effluents usually present ammonium oxidising bacteria (AOB) competition with microalgae for ammonium uptake, which can cause nitrite accumulation. In literature, nitrite effects over microalgae have shown controversial results. The present study evaluates the nitrite inhibition role in a microalgae-nitrifying bacteria culture. For this purpose, pilot- and lab-scale assays were carried out. During the continuous outdoor operation of the membrane photobioreactor (MPBR) plant, biomass retention time (BRT) of 2 d favoured AOB activity, which caused nitrite accumulation. This nitrite was confirmed to inhibit microalgae performance. Specifically, continuous 5-d lab-scale assays showed a reduction in the nitrogen recovery efficiency by 32, 42 and 80% when nitrite concentration in the culture accounted for 5, 10 and 20 mg N.L-1, respectively. On the contrary, short 30-min exposure to nitrite showed no significant differences in the photosynthetic activity of microalgae under nitrite concentrations of 0, 5, 10 and 20 mg N.L-1. On the other hand, when the MPBR plant was operated at 2.5-d BRT, the nitrite concentration was reduced to negligible values due to increasing activity of microalgae and nitrite oxidising bacteria (NOB). This allowed obtaining maximum MPBR performance; i.e. nitrogen recovery rate (NRR) and biomass productivity of 19.7 +/- 3.3 mg N.L-1.d(-1) and 139 +/- 35 mg VSS.L-1.d(-1), respectively; while nitrification rate (NOxR) reached the lowest value (13.5 +/- 3.4 mg N.L-1.d(-1)). Long BRT of 4.5 d favoured NOB growth, avoiding nitrite inhibition. However, it implied a decrease in microalgae growth and the accumulation of nitrate in the MPBR effluent. Hence, it seems that optimum BRT has to be within the range 2-4.5 d in order to favour microalgae growth with respect to AOB and NOB. (C) 2020 Elsevier Ltd. All rights reserved. es_ES
dc.description.sponsorship This research work was supported by the Spanish Ministry of Economy and Competitiveness (MINECO, Projects CTM2014-54980-C2-1-R and CTM2014-54980-C2-2-R) jointly with the European Regional Development Fund (ERDF), both of which are gratefully acknowledged. It was also supported by the Spanish Ministry of Education, Culture and Sport via a pre-doctoral FPU fellowship to authors J. Gonzalez-Camejo (FPU14/05082) and S. Aparicio (FPU/15/02595) es_ES
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation info:eu-repo/grantAgreement/MINECO//CTM2014-54980-C2-1-R/ES/OBTENCION DE BIONUTRIENTES Y ENERGIA DEL AGUA RESIDUAL URBANA MEDIANTE CULTIVO DE MICROALGAS, TRATAMIENTOS ANAEROBIOS, CRISTALIZACION DE FOSFORO, ABSORCION DE NH3 Y COMPOSTAJE/ es_ES
dc.relation MECD/FPU/15/02595 es_ES
dc.relation info:eu-repo/grantAgreement/MECD//FPU14%2F05082/ES/FPU14%2F05082/ es_ES
dc.relation MINISTERIO DE ECONOMIA Y EMPRESA/CTM2011-28595-C02-01 es_ES
dc.relation info:eu-repo/grantAgreement/MINECO//CTM2014-54980-C2-2-R/ES/DESARROLLO DE UN SISTEMA DE CONTROL Y DE SOPORTE A LA DECISION PARA LA OBTENCION DE BIONUTRIENTES Y ENERGIA EN PROCESOS DE TRATAMIENTO DE AGUAS RESIDUALES URBANAS/ es_ES
dc.relation.ispartof Water Research es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Ammonium oxidising bacteria es_ES
dc.subject Microalgae es_ES
dc.subject Nitrite es_ES
dc.subject Outdoor es_ES
dc.subject Wastewater es_ES
dc.subject.classification INGENIERIA HIDRAULICA es_ES
dc.subject.classification TECNOLOGIA DEL MEDIO AMBIENTE es_ES
dc.title Nitrite inhibition of microalgae induced by the competition between microalgae and nitrifying bacteria es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.watres.2020.115499 es_ES
dc.rights.accessRights Embargado es_ES
dc.date.embargoEndDate 2022-04-01 es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Hidráulica y Medio Ambiente - Departament d'Enginyeria Hidràulica i Medi Ambient es_ES
dc.description.bibliographicCitation Gonzalez-Camejo, J.; Montero, P.; Aparicio, S.; Ruano, MV.; Borras, L.; Seco, A.; Barat, R. (2020). Nitrite inhibition of microalgae induced by the competition between microalgae and nitrifying bacteria. Water Research. 172:1-10. https://doi.org/10.1016/j.watres.2020.115499 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1016/j.watres.2020.115499 es_ES
dc.description.upvformatpinicio 1 es_ES
dc.description.upvformatpfin 10 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 172 es_ES
dc.identifier.pmid 31978839 es_ES
dc.relation.pasarela S\400642 es_ES
dc.contributor.funder Ministerio de Economía y Empresa es_ES
dc.contributor.funder Ministerio de Economía y Competitividad es_ES
dc.contributor.funder Ministerio de Educación, Cultura y Deporte es_ES


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