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Production of microalgal external organic matter in a Chlorella-dominated culture: influence of temperature and stress factors

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Production of microalgal external organic matter in a Chlorella-dominated culture: influence of temperature and stress factors

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dc.contributor.author Gonzalez-Camejo, Josue es_ES
dc.contributor.author Paches Giner, Maria Aguas Vivas es_ES
dc.contributor.author Marín, A. es_ES
dc.contributor.author Jiménez Benítez, Antonio Luis es_ES
dc.contributor.author Seco, A. es_ES
dc.contributor.author Barat, Ramón es_ES
dc.date.accessioned 2020-12-17T04:33:51Z
dc.date.available 2020-12-17T04:33:51Z
dc.date.issued 2020-07-01 es_ES
dc.identifier.issn 2053-1400 es_ES
dc.identifier.uri http://hdl.handle.net/10251/157306
dc.description.abstract [EN] Although microalgae are recognised to release external organic matter (EOM), little is known about this phenomenon in microalgae cultivation systems, especially on a large scale. A study on the effect of microalgae-stressing factors such as temperature, nutrient limitation and ammonium oxidising bacteria (AOB) competition in EOM production by microalgae was carried out. The results showed non-statistically significant differences in EOM production at constant temperatures of 25, 30 and 35 degrees C. However, when the temperature was raised from 25 to 35 degrees C for 4 h a day, polysaccharide production increased significantly, indicating microalgae stress. Nutrient limitation also seemed to increase EOM production. No significant differences were found in EOM production under lab conditions when the microalgae competed with AOB for ammonium uptake. However, when the EOM concentration was monitored during continuous outdoor operation of a membrane photobioreactor (MPBR) plant, nitrifying bacteria activity was likely to be responsible for the increase in EOM concentration in the culture. Other factors such as high temperatures, ammonium-depletion and low light intensities could also have induced cell deterioration and thus have influenced EOM production in the outdoor MPBR plant. Membrane fouling seemed to depend on the biomass concentration of the culture. However, under the operating conditions tested, the behaviour of fouling rate with respect to the EOM concentration was different depending on the initial membrane state. es_ES
dc.description.sponsorship This research work has been 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. This was also supported by the Spanish Ministry of Education, Culture and Sport via a pre-doctoral FPU fellowship to author J. Gonzalez-Camejo (FPU14/05082) es_ES
dc.language Inglés es_ES
dc.publisher The Royal Society of Chemistry 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 info:eu-repo/grantAgreement/MECD//FPU14%2F05082/ES/FPU14%2F05082/ 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 Environmental Science: Water Research & Technology es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Microalgae es_ES
dc.subject Extracellular organic matter es_ES
dc.subject Protein es_ES
dc.subject Polysaccharide es_ES
dc.subject Stress factor es_ES
dc.subject.classification TECNOLOGIA DEL MEDIO AMBIENTE es_ES
dc.subject.classification INGENIERIA HIDRAULICA es_ES
dc.title Production of microalgal external organic matter in a Chlorella-dominated culture: influence of temperature and stress factors es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1039/d0ew00176g es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto Universitario de Ingeniería del Agua y del Medio Ambiente - Institut Universitari d'Enginyeria de l'Aigua i Medi Ambient 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.; Paches Giner, MAV.; Marín, A.; Jiménez Benítez, AL.; Seco, A.; Barat, R. (2020). Production of microalgal external organic matter in a Chlorella-dominated culture: influence of temperature and stress factors. Environmental Science: Water Research & Technology. (7):1-14. https://doi.org/10.1039/d0ew00176g es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1039/d0ew00176g es_ES
dc.description.upvformatpinicio 1 es_ES
dc.description.upvformatpfin 14 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.issue 7 es_ES
dc.relation.pasarela S\412334 es_ES
dc.contributor.funder European Regional Development Fund 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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