RT info:eu-repo/semantics/article
T1 Influence of liquid-to-biogas ratio and alkalinity on the biogas upgrading performance in a demo scale algal-bacterial photobioreactor
A1 Marín de Jesús, David Fernando
A1 Ortíz, Antonio
A1 Díez Montero, Rubén
A1 Uggetti, Enrica
A1 García, Joan
A1 Lebrero Fernández, Raquel
A1 Muñoz Torre, Raúl
K1 Algal-bacterial photobioreactor
K1 Fotobiorreactor de algas y bacterias
K1 Alkalinity
K1 Alcalinidad
K1 Biogas upgrading
K1 Mejora de biogás
K1 23 Química
K1 33 Ciencias Tecnológicas
AB The influence of the liquid-to-biogas ratio (L/G) and alkalinity on methane quality was evaluated in a 11.7 m3 outdoors horizontal semi-closed tubular photobioreactor interconnected to a 45-L absorption column (AC). CO2 concentrations in the upgraded methane ranged from <0.1 to 9.6% at L/G of 2.0 and 0.5, respectively, with maximum CH4 concentrations of 89.7% at a L/G of 1.0. Moreover, an enhanced CO2 removal (mediating a decrease in CO2 concentration from 9.6 to 1.2%) and therefore higher CH4 contents (increasing from 88.0 to 93.2%) were observed when increasing the alkalinity of the AC cultivation broth from 42 ± 1 mg L−1 to 996 ± 42 mg L−1. H2S was completely removed regardless of the L/G or the alkalinity in AC. The continuous operation of the photobioreactor with optimized operating parameters resulted in contents of CO2 (<0.1%–1.4%), H2S (<0.7 mg m−3) and CH4 (94.1%–98.8%) complying with international regulations for methane injection into natural gas grids.
PB Elsevier
SN 0960-8524
YR 2019
FD 2019
LK https://uvadoc.uva.es/handle/10324/46875
UL https://uvadoc.uva.es/handle/10324/46875
LA eng
NO Bioresource Technology, 2019, vol. 280, p. 112-117
NO Producción Científica
DS UVaDOC
RD 18-abr-2024