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Wastewater treatment using Scenedesmus almeriensis: Effect of operational conditions on the composition of the microalgae-bacteria consortia
dc.contributor.author | Sánchez-Zurano, Ana | |
dc.contributor.author | Lafarga, Tomás | |
dc.contributor.author | Morales-Amaral, María del Mar | |
dc.contributor.author | Gómez-Serrano, Cintia | |
dc.contributor.author | Fernández-Sevilla, José María | |
dc.contributor.author | Acién Fernández, Francisco Gabriel | |
dc.contributor.author | Molina-Grima, Emilio | |
dc.date.accessioned | 2022-02-24T09:37:38Z | |
dc.date.available | 2022-02-24T09:37:38Z | |
dc.date.issued | 2021-05-21 | |
dc.identifier.issn | 3885–3897 | |
dc.identifier.uri | http://hdl.handle.net/10835/13315 | |
dc.description.abstract | Primary urban wastewater was treated in outdoor raceways using a microalgae-bacteria consortia dominated by Scenedesmus almeriensis. The current study aimed at assessing the effect of operational conditions, namely culture depth and dilution rate, on: (i) biomass productivity; (ii) the nutrient removal capacity, and (iii) the composition of the microalgae-bacteria consortium and the presence of unwanted microorganisms. Optimum dilution rates to process large quantities of wastewater during summer and achieve high biomass productivities were 0.3-0.5 day-1. Under the optimum operational conditions, nitrogen and phosphorus removal rates were higher than 90% while removal of chemical oxygen demand was 70%. Operating at different culture depths had a striking effect on the composition of the microalgae-bacteria consortium. The relative abundance of nitrifiers increased with culture depth and was minimised at 0.05 m: larger culture depths led to enhanced nitrifying activity and therefore to nitrate production and accumulation in the system. Results demonstrate the potential of microalgae-based wastewater treatment processes and the importance of selecting suitable operational conditions to maximise both, biomass production and nutrient removal by minimising the occurrence of nitrifying bacteria. | es_ES |
dc.language.iso | en | es_ES |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.title | Wastewater treatment using Scenedesmus almeriensis: Effect of operational conditions on the composition of the microalgae-bacteria consortia | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es_ES |
dc.relation.projectID | http://eu-repo/grantAgreement/ES/MINECO/2016SABANA/ES/Sustainable%20Algae%20Biorefinery%20for%20Agriculture%20aNd%20Aquaculture/SABANA/ | es_ES |