RT info:eu-repo/semantics/article
T1 Waste-to-fuel technologies for the bioconversion of carrot discards into biobutanol
A1 López Linares, Juan Carlos
A1 Coca Sanz, Mónica
A1 Plaza Lazaro, Pedro Enrique
A1 Lucas Yagüe, Susana
A1 García Cubero, María Teresa
K1 Hydrothermal pretreatment
K1 Pretratamiento hidrotérmico
K1 Enzymatic hydrolysis
K1 Hidrólisis enzimática
K1 Biofuels
K1 Biocarburantes
K1 Biobutanol
AB Carrot discard was evaluated as a raw material for acetone-butanol-ethanol (ABE) fermentation. Different strategies based on hydrothermal pretreatment and/or enzymatic hydrolysis were compared for biobutanol production from carrot discard pulp. In addition, the use of different types of enzymes and diverse enzyme mixtures were evaluated. In this way, total sugar recoveries of up to 76%, and butanol and ABE concentrations of 7.4 and 11.5 g/L, respectively (74 g butanol and 115 g ABE/kg carrot pulp), were achieved when the carrot discard pulp was enzymatically hydrolyzed, without pretreatment, using a mixture of enzymes of Cellic CTec2 and Viscozyme L at a dosage of 0.1 and 0.2 g/g, respectively. When a hydrothermal pretreatment was applied, a total sugar recovery of 88%, 6.9 g/L butanol and 10.1 g/L ABE (69 g butanol and 101 g ABE/kg carrot pulp) were attained using the same mixture of enzymes. In this way, no hydrothermal pretreatment would be necessary to produce ABE from carrot discard, which is very interesting for the profitability of the process. Furthermore, the carrot discard juice yielded 6.4 and 9 g/L butanol and ABE, respectively, showing that all the carrot discards could be used for ABE production.
PB Elsevier
SN 0960-1481
YR 2022
FD 2022
LK https://uvadoc.uva.es/handle/10324/57407
UL https://uvadoc.uva.es/handle/10324/57407
LA eng
NO Renewable Energy, 2023, Volume 202, Pages 362-369
NO Producción Científica
DS UVaDOC
RD 11-jul-2024