RT info:eu-repo/semantics/article
T1 Optimization of the digestion process of Scenedesmus sp. and Opuntia maxima for biogas production
A1 Ramos Suárez, Juan Luis
A1 Martínez, Alejandro
A1 Carreras, Nely
A2 Ingeniería Agraria y del Medio Natural
K1 Biogas
K1 Microalgae
K1 Co-digestion
K1 Bioenergy
K1 Energy crop
K1 Anaerobic digestion
AB Scenedesmus biomass is not an adequate substrate for anaerobic digestion due to its low biodegradability and low biogas yield. This study aims to evaluate the anaerobic co-digestion of Scenedesmus microalgalbiomass and Opuntia maxima cladodes, the latter added in order to improve the digestion process. Batch assays were conducted to evaluate possible synergistic effects in different mixtures of both substrates. Mixture with highest methane yield was digested in semi-continuous mode at different VS concentrations. Feedstock composed of 75% O. maxima and 25% Scenedesmus (VS basis) showed the highest methane yield increasing 66.4% and 63.9% that of Scenedesmus and O. maxima, respectively. In semi-continuousmode, ideal organic loading rate (OLR) with 6%VS feed concentration was 4 gVS L1 d1, which yielded 292 ± 39 LCH4 kgVS1 (15 days HRT). In the case of 8%VS feed concentration ideal OLR was 5.33 gVS L1d1, which yielded 308 ± 22 LCH4 kgVS1 (15 days HRT). The co-digestion of O. maxima and Scenedesmusbiomass enhanced the anaerobic digestion process and avoided inhibition caused by low C/N ratio of microalgae.
SN 0196-8904
YR 2014
FD 2014
LK http://riull.ull.es/xmlui/handle/915/40920
UL http://riull.ull.es/xmlui/handle/915/40920
LA en
DS Repositorio institucional de la Universidad de La Laguna
RD 30-abr-2025