2024-03-29T07:32:44Zhttp://buleria.unileon.es/oai/requestoai:buleria.unileon.es:10612/69932020-12-10T08:56:32Zcom_10612_17col_10612_18
Instituto de Medio Ambiente, Recursos Naturales y Biodiversidad de la Universidad de Léon
Leite Serejo, Mayara
Posadas, Esther
Árpád Boncz, Marc
Blanco Lanza, Saúl
Garía Encina, Pedro
Muñoz, Raúl
Ecologia
2015-02-23
2017-11-28T14:51:01Z
2017-11-28T14:51:01Z
2017-11-28
Environmental Science & Technology, 2015, Mar 3;49(5)
http://hdl.handle.net/10612/6993
P. 3228-3236
The influence of biogas flow rate (0, 0.3, 0.6, and 1.2 m3 m−2 h−1) on the elemental and macromolecular composition of the algal-bacterial biomass produced from biogas upgrading in a 180 L photobioreactor interconnected to a 2.5 L external bubbled absorption column was investigated using diluted anaerobically digested vinasse as cultivation medium. The influence of the external liquid recirculation/biogas ratio (0.5 < L/G < 67) on the removal of CO2 and H2S, and on the concentrations of O2 and N2 in the upgraded biogas, was also evaluated. A L/G ratio of 10 was considered
optimum to support CO2 and H2S removals of 80% and 100%, respectively, at all biogas flow rates tested. Biomass productivity increased at increasing biogas flow rate, with a maximum of 12 ± 1gm−2 d−1 at 1.2 m3 m−2 h−1, while the C, N, and P biomass content remained constant at 49 ± 2%, 9 ± 0%, and 1 ± 0%, respectively, over the 175 days of experimentation. The high carbohydrate contents (60−76%), inversely correlated to biogas flow rates, would allow the production of ≈100 L of ethanol per 1000 m3 of biogas upgraded under a biorefinery process approach
SI
eng
American Chemical Society
Biología
Ecología. Medio ambiente
Biogás
Biomasa
Bacterias
Algas
Influence of Biogas Flow Rate on Biomass Composition During the Optimization of Biogas Upgrading in Microalgal-Bacterial Processes
info:eu-repo/semantics/article
info:eu-repo/semantics/openAccess