RT info:eu-repo/semantics/article
T1 A feasibility study on the bioconversion of CO2 and H2 to biomethane by gas sparging through polymeric membranes
A1 Díaz Villalobos, Israel
A1 Pérez, Carlos
A1 Alfaro, Natalia
A1 Fernández-Polanco Fernández de Moreda, Fernando
K1 biomethane
K1 biogas upgrading
K1 hydrogenotrophic archaea
K1 MBR
K1 methanation
K1 3303 Ingeniería y Tecnología Químicas
K1 3322.05 Fuentes no Convencionales de Energía
K1 3308 Ingeniería y Tecnología del Medio Ambiente
AB In this study, the potential of a pilot hollow-fiber membrane bioreactor for the conversion of H2 and CO2 to CH4 was evaluated. The system transformed 95% of H2 and CO2 fed at a maximum loading rate of 40.2(m_(H_2)^3)⁄(m_R^3 d) and produced 0.22 m3 of CH4 per m3 of H2 fed at thermophilic conditions. H2 mass transfer to the liquid phase was identified as the limiting step for the conversion, and kLa values of 430h-1 were reached in the bioreactor by sparging gas through the membrane module. A simulation showed that the bioreactor could upgrade biogas at a rate of 25m^3⁄(m_R^3 d), increasing the CH4 concentration from 60 to 95%v. This proof-of-concept study verified that gas sparging through a membrane module can efficiently transfer H2 from gas to liquid phase and that the conversion of H2 and CO2 to biomethane is feasible on a pilot scale at noteworthy load rates.
PB Elsevier
SN 0960-8524
YR 2015
FD 2015
LK https://uvadoc.uva.es/handle/10324/63707
UL https://uvadoc.uva.es/handle/10324/63707
LA spa
NO Bioresource Technology, Junio 2015, vol 185, p. 246-253
NO Producción Científica
DS UVaDOC
RD 24-nov-2024