RT info:eu-repo/semantics/article
T1 Production of volatile fatty acids (VFAs) from five commercial bioplastics via acidogenic fermentation
A1 García Depraect, Octavio
A1 Lebrero Fernández, Raquel
A1 Rodriguez Vega, Sara
A1 Börner, Rosa Aragão
A1 Börner, Tim
A1 Muñoz Torre, Raúl
K1 Biodegradation
K1 Biodegradación
K1 Biorefinery
K1 Biorrefinería
K1 Polyhydroxyalkanoates
K1 Polihidroxialcanoatos
AB The feasibility of producing volatile fatty acids (VFAs) from five commercial bioplastics via acidogenic fermentation by a non-pretreated anaerobic sludge was investigated. Mesophilic, anaerobic, acidogenic batch assays at 1, 10 and 20 g/L feed concentrations revealed the feasibility of producing VFAs from polyhydroxyalkanoates (PHA), i.e., PHB and PHBV, but not from PBS, PCL and PLA under the test conditions and time. However, only high PHA substrate concentrations (10–20 g/L) resulted in organic overloading and decreasing the pH of the culture broth down to 4–5, which in turn induced the accumulation of VFAs via kinetic imbalance between acidogenesis and methanogenesis. Gaseous carbon (C-CO2 and C-CH4) accounted for 8–35% of the total initial carbon, while C-VFAs represented 10–18%, mainly as acetate and butyrate. This study represents the first systematically assessed proof-of-concept to produce VFAs from PHA, which is key for the design of bioplastic-to-bioplastic recycling (bio)technologies.
PB Elsevier
SN 0960-8524
YR 2022
FD 2022
LK https://uvadoc.uva.es/handle/10324/54163
UL https://uvadoc.uva.es/handle/10324/54163
LA eng
NO Bioresource Technology, 2022, In Press, 127655
NO Producción Científica
DS UVaDOC
RD 15-jun-2024