RT info:eu-repo/semantics/article
T1 Feasibility study of biogas upgrading coupled with nutrient removal from anaerobic effluents using microalgae-based processes
A1 Posadas Olmos, Esther
A1 Szpak, D.
A1 Lombó, F.
A1 Domínguez, A.
A1 Díaz Villalobos, Israel
A1 Blanco, Saúl
A1 García Encina, Pedro Antonio
A1 Muñoz Torre, Raúl
K1 Biogás
K1 Aguas residuales
AB 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.
PB Springer
YR 2016
FD 2016
LK http://uvadoc.uva.es/handle/10324/26907
UL http://uvadoc.uva.es/handle/10324/26907
LA eng
NO Journal of Applied Phycology, 2016, Volume 28, Issue 4, pag. 2147–2157
NO Producción Científica
DS UVaDOC
RD 27-dic-2024