2024-03-29T08:08:57Zhttps://uvadoc.uva.es/oai/requestoai:uvadoc.uva.es:10324/470642022-12-01T22:15:26Zcom_10324_35294com_10324_952com_10324_894col_10324_35295
López Linares, Juan Carlos
García Cubero, María Teresa
Coca Sanz, Mónica
Lucas Yagüe, Susana
2021
Producción Científica
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).
application/pdf
https://uvadoc.uva.es/handle/10324/47064
eng
Elsevier
23 Química
33 Ciencias Tecnológicas
Efficient biobutanol production by acetone-butanol-ethanol fermentation from spent coffee grounds with microwave assisted dilute sulfuric acid pretreatment
info:eu-repo/semantics/article
TEXT
UVaDOC. Repositorio Documental de la Universidad de Valladolid
Hispana