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Título
Upscaling volatile fatty acids production: Demonstrating the reliability of anaerobic fermentation of food wastes from the lab towards industrial implementation
Autor
Año del Documento
2025
Editorial
Elsevier
Descripción
Producción Científica
Documento Fuente
Science of The Total Environment, 2025, vol. 985, p. 179735
Zusammenfassung
In recent years, the anaerobic fermentation (AF) of food waste (FW) has gained significant attention as a sustainable solution for waste valorization. However, the challenge of scaling up biotechnological processes for industrial applications remains a key barrier to commercialization. This investigation addressed this challenge by scaling up an auto-AF process from laboratory scale (4 L) to pilot (50 L) and demonstration scale in an industrial environment (250 L), using a lipid-rich FW (46.6 %, w/w) as the feedstock and endogenous microbiota as the inoculum. The applied operating conditions promoted the hydrolysis (>35 % volatile solids (VS) removal) and acidogenesis (>58 % of soluble chemical oxygen demand (sCOD) acidified) steps. As the reactor size for technology testing was increased, efficient mixing was crucial to ensure a proper homogenization of the fermentation broth. Lactic acid bacteria (LAB) prevailed in the endogenous microbiota, contributing to the enhanced hydrolysis and acidification efficiencies determined at all the scales. The minimal performance variations determined at different reactors' scales, along with the stability of the metabolite profiles, demonstrated the robustness and reliability of AF, opening the door to continue further industrialization.
Materias Unesco
3308 Ingeniería y Tecnología del Medio Ambiente
Palabras Clave
Anaerobic fermentation
Food waste
Volatile fatty acids
Upscale
Pilot plant
Demonstration plant
Microbial populations
ISSN
0048-9697
Revisión por pares
SI
Patrocinador
This work was supported by OLEOFERM (EraCoBiotech; PCI2021-121936) funded by MCIN/AEI/10.13039/501100011033 and “European Union NextGenerationEU/PRTR” and by the project OILI with the reference CNS2022-135848.
Version del Editor
Propietario de los Derechos
© 2025 The Author(s)
Idioma
eng
Tipo de versión
info:eu-repo/semantics/publishedVersion
Derechos
openAccess
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