2024-03-28T09:07:05Zhttps://uvadoc.uva.es/oai/requestoai:uvadoc.uva.es:10324/541632023-12-04T13:18:35Zcom_10324_1173com_10324_931com_10324_894col_10324_1371
Production of volatile fatty acids (VFAs) from five commercial bioplastics via acidogenic fermentation
García Depraect, Octavio
Lebrero Fernández, Raquel
Rodriguez Vega, Sara
Börner, Rosa Aragão
Börner, Tim
Muñoz Torre, Raúl
Biodegradation
Biodegradación
Biorefinery
Biorrefinería
Polyhydroxyalkanoates
Polihidroxialcanoatos
Producción Científica
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.
Junta de Castilla y Leon - Fondo Europeo de Desarrollo Regional (grants CLU 2017-09, CL-EI-2021-07 and UIC 315)
2022-07-22T08:55:25Z
2022-07-22T08:55:25Z
2022
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Bioresource Technology, 2022, In Press, 127655
0960-8524
https://uvadoc.uva.es/handle/10324/54163
10.1016/j.biortech.2022.127655
eng
https://www.sciencedirect.com/science/article/pii/S0960852422009841?via%3Dihub
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
© 2022 The Authors
application/pdf
Elsevier
https://uvadoc.uva.es/bitstream/10324/54163/4/Production-volatile-fatty-acids.pdf.jpg
Hispana
TEXT
http://creativecommons.org/licenses/by-nc-nd/4.0/
UVaDOC. Repositorio Documental de la Universidad de Valladolid
https://uvadoc.uva.es/handle/10324/54163