RT journal article
T1 Application of Anaerobic Co-digestion of Brewery by-Products for Biomethane and Bioenergy Production in a Biorefinery Concept
A1 Sganzerla, William Gustavo
A1 Tena Villares, Miriam
A1 Sillero Moreno, Leonor María
A1 Magrini, Flaviane Eva
A1 Sophiatti, Igor Vinicius Machado
A1 Gaio, Juliano
A1 Paesi, Suelen
A1 Forster-Carneiro, Tânia
A1 Solera del Río, María del Rosario
A1 Pérez García, Montserrat
A1 gaio
A2 Tecnologías del Medio Ambiente
K1 Biogas
K1 Brewer’s spent grains
K1 Circular bioeconomy
K1 Kinetics
K1 Lignocellulosic biomass
K1 Microbial community
K1 Wastewater
AB This study investigated the anaerobic co-digestion (AcoD) of brewery by-products for biomethane and bioenergy recovery, focusing on operational performance evaluation, kinetic analysis, microbial metataxonomic, and metabolic function prediction. The biochemical methane potential was conducted under mesophilic (35 °C) and methanogenic conditions (pH 7.5) by mixing brewery wastewater and sludge from the brewery wastewater treatment plant (1:1, v/v), following the addition (2.5 – 12.5 %, w/v) of brewer’s spent grains (BSG). The results demonstrate that the highest methane yield (88.02 mL CH4/g TVS) was obtained with 12.5 % BSG, which was 20.66-fold higher than the control reactor operated with wastewater and sludge (4.26 mL CH4/g TVS). The bioenergy recovery from biomethane could generate electricity (0.348 kWh/kg TVS) and heat (1556 MJ/kg TVS), avoiding greenhouse gas emissions (0.114 kg CO2-eq/kg TVS). The microbial community dynamics revealed a predominance of Halobacterota, Chloroflexi, and Euryarchaeota phylum. The genera Methanosaeta and Methanobacterium, and the Anaerolineaceae family predominated in the AcoD process. The metabolic function prediction showed the presence of genes (K01895, K00193, K00625, and K00925) associated with the direct activation of acetate in the acetoclastic pathway and methane production. Finally, the data obtained provide a perspective on using brewery by-products for bioenergy production in a biorefinery concept, reducing the environmental impacts and contributing to the circular bioeconomy transition of the beer industry.
PB Springer
SN 1939-1234
YR 2023
FD 2023-05-11
LK http://hdl.handle.net/10498/28994
UL http://hdl.handle.net/10498/28994
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 21-sep-2026