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Título
Influence of the diffuser type and liquid-to-biogas ratio on biogas upgrading performance in an outdoor pilot scale high rate algal pond
Autor
Año del Documento
2020
Editorial
Elsevier
Descripción
Producción Científica
Documento Fuente
Fuel, 2020, vol. 275, p. 117999
Zusammenfassung
Four different types of biogas diffusers (metallic of 2 µm, porous stone, and two ceramic membranes of 0.2 and 0.4 µm) were evaluated to improve the quality of biomethane in an outdoor pilot scale photobioreactor interconnected to an external biogas absorption unit. Each type of diffuser was tested independently using three different liquid to biogas (L/G) ratios (0.5, 1 and 2). No significant difference was recorded in the CH4 concentrations of biomethane (i.e. > 93.0%) working with the different types of diffusers at L/G ratios > 1. Only the metallic biogas diffuser supported CH4 concentrations higher than 94.0% at a L/G ratio of 0.5. The increase in L/G ratio induced the stripping of the dissolved N2 and O2 into the biogas, which compensated the decrease in CO2 concentration mediated by the higher pH value of the scrubbing solution. The ANOVA of the results here obtained confirmed that both the type of biogas diffuser and the L/G ratio significantly determined the quality of the upgraded biogas.
Materias Unesco
23 Química
33 Ciencias Tecnológicas
Palabras Clave
Algal-bacterial photobioreactor
Fotobiorreactor de algas y bacterias
Biogas upgrading
Mejora de biogás
ISSN
0016-2361
Revisión por pares
SI
Patrocinador
Junta de Castilla y León y EU-FEDER (CLU 2017-09 y UIC 071)
Version del Editor
Propietario de los Derechos
© 2020 Elsevier
Idioma
eng
Tipo de versión
info:eu-repo/semantics/acceptedVersion
Derechos
openAccess
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