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Effect of long residence time and high temperature over anaerobic biodegradation of Scenedesmus microalgae grown in wastewater

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Effect of long residence time and high temperature over anaerobic biodegradation of Scenedesmus microalgae grown in wastewater

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dc.contributor.author Greses-Huerta, Silvia es_ES
dc.contributor.author Zamorano -López, Núria es_ES
dc.contributor.author Borrás Falomir, Luis es_ES
dc.contributor.author FERRER, J. es_ES
dc.contributor.author Seco Torrecillas, Aurora es_ES
dc.contributor.author Aguado García, Daniel es_ES
dc.date.accessioned 2019-04-13T20:37:10Z
dc.date.available 2019-04-13T20:37:10Z
dc.date.issued 2018 es_ES
dc.identifier.issn 0301-4797 es_ES
dc.identifier.uri http://hdl.handle.net/10251/119378
dc.description.abstract [EN] Anaerobic digestion of indigenous Scenedesmus spp. microalgae was studied in continuous lab-scale anaerobic reactors at different temperatures (35 degrees C and 55 degrees C), and sludge retention time - SRT (50 and 70 days). Mesophilic digestion was performed in a continuous stirred-tank reactor (CSTR) and in an anaerobic membrane bioreactor (AnMBR). Mesophilic CSTR operated at 50 days SRT only achieved 11.9% of anaerobic biodegradability whereas in the AnMBR at 70 days SRT and 50 days HRT reached 39.5%, which is even higher than the biodegradability achieved in the thermophilic CSTR at 50 days SRT (30.4%). Microbial analysis revealed a high abundance of cellulose-degraders in both reactors, AnMBR (mainly composed of 9.4% Bacteroidetes, 10.1% Chloroflexi, 8.0% Firmicutes and 13.2% Thermotogae) and thermophilic CSTR (dominated by 23.8% Chloroflexi and 12.9% Firmicutes). However, higher microbial diversity was found in the AnMBR compared to the thermophilic CSTR which is related to the SRT. since high SRT promoted low growth-rate microorganisms, increasing the hydrolytic potential of the system. These results present the membrane technology as a promising approach to revalue microalgal biomass, suggesting that microalgae biodegradability and consequently the methane production could be improved operating at higher SRT. (C) 2018 Elsevier Ltd. All rights reserved. es_ES
dc.description.sponsorship This research work has been supported by the Spanish Ministry of Economy and Competitiveness (MINECO, Project CTM2011-28595-C02-01/02) jointly with the European Regional Development Fund (ERDF), which are gratefully acknowledged. The authors are thankful to Fernando Fernandez-Polanco for providing the thermophilic sludge to inoculate the reactor. es_ES
dc.description.sponsorship This research work has been financially supported by the Generalitat Valenciana (PROMETEO/2012/029 PROJECT), which is gratefully acknowledged.
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation MINECO/CTM2011-28595-C02-01 es_ES
dc.relation.ispartof Journal of Environmental Management es_ES
dc.rights Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) es_ES
dc.subject Anaerobic digestion es_ES
dc.subject Biodegradability es_ES
dc.subject Membrane technology es_ES
dc.subject Microalgae es_ES
dc.subject Microbial analysis es_ES
dc.subject Scenedesmus spp es_ES
dc.subject.classification TECNOLOGIA DEL MEDIO AMBIENTE es_ES
dc.title Effect of long residence time and high temperature over anaerobic biodegradation of Scenedesmus microalgae grown in wastewater es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.jenvman.2018.04.086 es_ES
dc.rights.accessRights Abierto 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 Greses-Huerta, S.; Zamorano -López, N.; Borrás Falomir, L.; Ferrer, J.; Seco Torrecillas, A.; Aguado García, D. (2018). Effect of long residence time and high temperature over anaerobic biodegradation of Scenedesmus microalgae grown in wastewater. Journal of Environmental Management. 218:425-434. https://doi.org/10.1016/j.jenvman.2018.04.086 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://doi.org/10.1016/j.jenvman.2018.04.086 es_ES
dc.description.upvformatpinicio 425 es_ES
dc.description.upvformatpfin 434 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 218 es_ES
dc.identifier.pmid 29709811
dc.relation.pasarela S\366350 es_ES
dc.contributor.funder Ministerio de Economía y Empresa es_ES


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