dc.contributor | Facultad de Ciencias Biologicas y Ambientales | es_ES |
dc.contributor.author | Méndez Rodríguez, Lara | |
dc.contributor.author | García Guzmán, Dimas Alberto | |
dc.contributor.author | Pérez, Enrique | |
dc.contributor.author | Blanco Lanza, Saúl | |
dc.contributor.author | Muñoz Torre, Raúl | |
dc.contributor.other | Ecologia | es_ES |
dc.date | 2022 | |
dc.date.accessioned | 2024-04-08T07:11:17Z | |
dc.date.available | 2024-04-08T07:11:17Z | |
dc.identifier.citation | Méndez, L., García, D., Perez, E., Blanco, S., & Muñoz, R. (2022). Photosynthetic upgrading of biogas from anaerobic digestion of mixed sludge in an outdoors algal-bacterial photobioreactor at pilot scale. Journal of Water Process Engineering, 48, Article e102891. https://doi.org/10.1016/J.JWPE.2022.102891 | es_ES |
dc.identifier.issn | 2214-7144 | |
dc.identifier.other | https://www.sciencedirect.com/science/article/pii/S221471442200335X | es_ES |
dc.identifier.uri | https://hdl.handle.net/10612/19495 | |
dc.description.abstract | [EN] Anaerobic digestion can biotransform the biodegradable fraction of sewage sludge into biogas, while the symbiotic action of algal-bacterial consortia can remove both the CO2 and H2S from biogas and nutrients from digestate. A 100 L anaerobic digester operated at 20 days of retention time coupled with a 180 L high-rate algal pond (HRAP) engineered to upgrade the biogas and treat the liquid fraction of the pilot digester was optimized along four operational stages: (I) operation with a greenhouse during winter; (II) operation without greenhouse; (III) process supplementation with NaHCO3; (IV) process supplementation with Na2CO3. The biogas produced was composed of 63.7 ± 2.9% CH4, 33.7 ± 1.9% CO2, 0.5 ± 0.3% O2 and 1.6 ± 1.1% N2. An average methane productivity of 324.7 ± 75.8 mL CH4 g VSin−1 and total COD removals of 48 ± 20% were recorded in the digester. The CH4 concentration in the biomethane gradually decreased to 87.6 ± 2.0% and 85.1 ± 1.3% at the end of stage I and II, respectively, attributed to the loss of inorganic carbon in the HRAP. The supplementation of NaHCO3 and Na2CO3 mediated an increase in the CH4 content to 90.4 ± 1.5 and 91.2 ± 0.7% in stages III and IV, respectively. Steady state CO2 removals of 90% and 88% in stages I and II, and 95.7 and 97.6% in stages III and IV, respectively, were recorded. A constant biomass productivity of 22 g m−2 d−1, set by daily harvesting 26.5 g dry algal-bacterial biomass from the bottom of the settler, was maintained concomitantly with a complete removal of the N and P supplied via centrate | es_ES |
dc.language | eng | es_ES |
dc.publisher | Elsevier | es_ES |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Ecología. Medio ambiente | es_ES |
dc.subject | Ingenierías | es_ES |
dc.subject.other | Algal-bacterial photobioreactor | es_ES |
dc.subject.other | Anaerobic digestion | es_ES |
dc.subject.other | Biogas upgrading | es_ES |
dc.subject.other | Biomethane | es_ES |
dc.subject.other | Sludge management | es_ES |
dc.title | Photosynthetic upgrading of biogas from anaerobic digestion of mixed sludge in an outdoors algal-bacterial photobioreactor at pilot scale | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.identifier.doi | 10.1016/J.JWPE.2022.102891 | |
dc.description.peerreviewed | SI | es_ES |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es_ES |
dc.journal.title | Journal of Water Process Engineering | es_ES |
dc.volume.number | 48 | es_ES |
dc.page.initial | 102891 | es_ES |
dc.type.hasVersion | info:eu-repo/semantics/publishedVersion | es_ES |
dc.subject.unesco | 2417.07 Algología (Ficología) | es_ES |
dc.subject.unesco | 3308.10 Tecnología de Aguas Residuales | es_ES |
dc.subject.unesco | 3322.05 Fuentes no Convencionales de Energía | es_ES |
dc.description.project | The authors thank FUNDACION DOMINGO MARTINEZ, the Regional Government of Castilla y León and the EU-FEDER program (CLU 2017-09, CL-EI-2021-07 and UIC 315). The Spanish Ministry of Science and Innovation (FJC 2018-038402-I) is also acknowledged for funding the Juan de la Cierva-Formación research contract of Lara Mendez. In addition, the authors want to acknowledge the National Autonomous University of Nicaragua (UNAN-Managua) and FUNDACION CAROLINA for funding the research stay of Dimas Garcia | es_ES |