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Thermophilic anaerobic conversion of raw microalgae: Microbial community diversity in high solids retention systems

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Thermophilic anaerobic conversion of raw microalgae: Microbial community diversity in high solids retention systems

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dc.contributor.author Zamorano-López, Núria es_ES
dc.contributor.author Greses-Huerta, Silvia es_ES
dc.contributor.author Aguado García, Daniel es_ES
dc.contributor.author SECO TORRECILLAS, AURORA es_ES
dc.contributor.author Borrás Falomir, Luis es_ES
dc.date.accessioned 2020-04-28T06:02:11Z
dc.date.available 2020-04-28T06:02:11Z
dc.date.issued 2019-09 es_ES
dc.identifier.uri http://hdl.handle.net/10251/141646
dc.description.abstract [EN] The potential of microbial communities for efficient anaerobic conversion of raw microalgae was evaluated in this work. A long-term operated thermophilic digester was fed with three different Organic Loading Rates (OLR) (0.2, 0.3 and 0.4¿g·L¿1·d¿1) reaching 32¿41% biodegradability values. The microbial community analysis revealed a remarkable presence of microorganisms that exhibit high hydrolytic capabilities such as Thermotogae (~44.5%), Firmicutes (~17.6%) and Dictyoglomi, Aminicenantes, Atribacteria and Planctomycetes (below ~5.5%) phyla. The suggested metabolic role of these phyla highlights the importance of protein hydrolysis and fermentation when only degrading microalgae. The ecological analysis of the reactor suggests the implication of the novel group EM3 in fermentation and beta-oxidation pathways during microalgae conversion into methane. Scenedesmus spp. substrate and free ammonia concentration strongly shaped thermophilic reactor microbial structure. Partial Least Square Discriminant Analysis (PLS-DA) remarked the resilient role of minor groups related to Thermogutta, Armatimonadetes and Ruminococcaceae against a potential inhibitor like free ammonia. Towards low-cost biogas production from microalgae, this study reveals valuable information about thermophilic microorganisms that can strongly disrupt microalgae and remain in high solids retention anaerobic digesters. es_ES
dc.description.sponsorship This research work has been supported by the Spanish Ministry of Economy and Competitiveness (MINECO, Project CTM2011-28595-C02-02) jointly with the European Regional Development Fund (ERDF), which are gratefully acknowledged. The authors are thankful to Fernando Fdz-Polanco research team (University of Valladolid, Spain) for providing the thermophilic sludge from their pilot plant to inoculate the bioreactor and Llúcia Martínez and Giusseppe D'Aria from FISABIO sequencing service (Valencia, Spain) for their technical support during the Illumina sequencing design. es_ES
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation MINECO/CTM2011-28595-C02-02 es_ES
dc.relation.ispartof Algal Research es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject 16S rRNA gene es_ES
dc.subject Anaerobic digestion es_ES
dc.subject Bioreactor es_ES
dc.subject Microalgae es_ES
dc.subject Microbial community es_ES
dc.subject Renewable energy es_ES
dc.subject.classification TECNOLOGIA DEL MEDIO AMBIENTE es_ES
dc.title Thermophilic anaerobic conversion of raw microalgae: Microbial community diversity in high solids retention systems es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.algal.2019.101533 es_ES
dc.rights.accessRights Embargado es_ES
dc.date.embargoEndDate 2021-05-11 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 Zamorano-López, N.; Greses-Huerta, S.; Aguado García, D.; Seco Torrecillas, A.; Borrás Falomir, L. (2019). Thermophilic anaerobic conversion of raw microalgae: Microbial community diversity in high solids retention systems. Algal Research. 41:1-9. https://doi.org/10.1016/j.algal.2019.101533 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1016/j.algal.2019.101533 es_ES
dc.description.upvformatpinicio 1 es_ES
dc.description.upvformatpfin 9 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 41 es_ES
dc.identifier.eissn 2211-9264 es_ES
dc.relation.pasarela S\403693 es_ES
dc.contributor.funder European Regional Development Fund es_ES
dc.contributor.funder Ministerio de Economía y Competitividad es_ES


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