RT info:eu-repo/semantics/article
T1 Efficient biobutanol production by acetone-butanol-ethanol fermentation from spent coffee grounds with microwave assisted dilute sulfuric acid pretreatment
A1 López Linares, Juan Carlos
A1 García Cubero, María Teresa
A1 Coca Sanz, Mónica
A1 Lucas Yagüe, Susana
K1 Biobutanol
K1 Spent coffee grounds
K1 Posos de café gastados
K1 23 Química
K1 33 Ciencias Tecnológicas
AB The integral valorization of potential sugars (cellulosic and hemicellulosic) from spentcoffee grounds (SCG), a lignocellulosic residue, is proposed in this work. With this aim,the microwave assisted dilute sulfuric acid pretreatment has been optimized, leading toa hemicellulosic sugar recovery in the pretreatment liquid (HSR  L  ) and an enzymatichydrolysis yield of 79 and 98%, respectively, at 160.47 ºC and 1.5% H  2  SO  4  .Moreover, the complete digestibility of cellulose (enzymatic hydrolysis yield = 100%)was also discovered for non-pretreated SCG, which is very interesting. Secondly, theproduction of biobutanol, an advanced biofuel, is also proposed from pretreated SCGenzymatic hydrolysate and pretreatment liquid achieved under optimal conditions.These were fermented by  Clostridium beijerinckii  , yielding 95 kg butanol/t SCG (drymatter) and 151 kg acetone-butanol-ethanol/t SCG (dry matter).
PB Elsevier
SN 0960-8524
YR 2021
FD 2021
LK https://uvadoc.uva.es/handle/10324/47064
UL https://uvadoc.uva.es/handle/10324/47064
LA eng
NO Bioresource Technology, 2021, vol. 320, p. 124348
NO Producción Científica
DS UVaDOC
RD 19-abr-2024