RT info:eu-repo/semantics/article
T1 Seasonal variation of biogas upgrading coupled with digestate treatment in an outdoors pilot scale algal-bacterial photobioreactor
A1 Marín, David
A1 Posadas Olmos, Esther
A1 Cano, Patricia
A1 Pérez Martínez, Víctor
A1 Blanco, Saúl
A1 Lebrero Fernández, Raquel
A1 Muñoz Torre, Raúl
K1 Fotobiorreactor de algas y bacterias
K1 Biogás
K1 Algal-bacterial photobioreactor
AB The yearly variations of the quality of the upgraded biogas and the efficiency of digestate treatment were evaluated in an outdoors pilot scale high rate algal pond (HRAP) interconnected to an external absorption column (AC) via a conical settler. CO2 concentrations in the upgraded biogas ranged from 0.7% in August to 11.9% in December, while a complete H2S removal was achieved regardless of the operational month. CH4 concentrations ranged from 85.2% in December to 97.9% in June, with a limited O2 and N2 stripping in the upgraded biogas mediated by the low recycling liquid/biogas ratio in the AC. Biomass productivity ranged from 0.0 g m−2 d−1 in winter to 22.5 g m−2 d−1 in summer. Finally, microalgae diversity was severely reduced throughout the year likely due to the increasing salinity in the cultivation broth of the HRAP induced by process operation in the absence of effluent.
PB Elsevier
SN 0960-8524
YR 2018
FD 2018
LK http://uvadoc.uva.es/handle/10324/30050
UL http://uvadoc.uva.es/handle/10324/30050
LA eng
NO Bioresource Technology, Volume 263, 2018, Pages 58-66
NO Producción Científica
DS UVaDOC
RD 19-abr-2024