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oai:uvadoc.uva.es:10324/269072025-03-26T19:10:03Zcom_10324_1173com_10324_931com_10324_894com_10324_31059com_10324_954col_10324_1371col_10324_31061

Posadas Olmos, Esther Szpak, D. Lombó, F. Domínguez, A. Díaz Villalobos, Israel Blanco, Saúl García Encina, Pedro Antonio Muñoz Torre, Raúl 2017-11-06T13:37:08Z 2017-11-06T13:37:08Z 2016 Journal of Applied Phycology, 2016, Volume 28, Issue 4, pag. 2147–2157 http://uvadoc.uva.es/handle/10324/26907 10.1007/s10811-015-0758-3 The present research was conducted to simultaneously optimize biogas upgrading and carbon and nutrient removal from centrates in a 180-L high-rate algal pond interconnected to an external CO2 absorption unit. Different biogas and centrate supply strategies were assessed to increase biomass lipid content. Results showed 99 % CO2 removal efficiencies from simulated biogas at liquid recirculation rates in the absorption column of 9.9 m3 m−2 h−1, concomitant with nitrogen and phosphorus removal efficiencies of 100 and 82 %, respectively, using a 1:70 diluted centrate at a hydraulic retention time of 7 days. The lipid content of the harvested algal–bacterial biomass remained low (2.9–11.2 %) regardless of the operational conditions, with no particular trend over time. The good settling characteristics of the algal–bacterial flocs resulted in harvesting efficiencies over 95 %, which represents a cost-effective alternative for algal biomass reutilization compared to conventional physical–chemical techniques. Finally, high microalgae biodiversity was found regardless of the operational conditions. eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ Attribution-NonCommercial-NoDerivatives 4.0 International Feasibility study of biogas upgrading coupled with nutrient removal from anaerobic effluents using microalgae-based processes info:eu-repo/semantics/article