RT info:eu-repo/semantics/article
T1 Sugarcane bagasse hydrolysis enhancement by microwave-assisted sulfolane pretreatment
A1 Portero Barahona, Patricia
A1 Carvajal Barriga, Enrique Javier
A1 Martín Gil, Jesús
A1 Martín Ramos, Pablo
K1 Enzymatic hydrolysis
K1 Hidrólisis enzimática
K1 Microwave irradiation
K1 Irradiación de microondas
K1 Sulfolane
K1 Sulfolano
AB Sugarcane bagasse is the major by-product of the sugarcane industry and, due to its abundant availability, it has been extensively studied for lignocellulosic bioconversion in the production of bioethanol and other value-added commercial products. In the study presented herein, a combined pretreatment using sulfolane, TiO2 and alkali microwave irradiation (MW-A) was assessed for the dissolution of lignin prior to enzymatic saccharification of holocellulose. Total reducing sugars (TRS) and saccharinic acid yields were investigated. The increase in NaOH concentration up to 5% and in temperature from 120 °C to 140 °C were found to have a positive influence on both yields. While increasing the reaction time from 5 to 60 min only led to an increase in TRS yield <2%, a reaction time of 30 min almost doubled the saccharinic acids production. TRS yields and saccharinic acid production were approximately 5% and 33% higher when the sulfolane-TiO2 reaction medium was used, as compared to MW-A in water, reaching up to 64.8% and 15.24 g/L of saccharinic acids, respectively. The proposed MW-A pretreatment may hold promise for industrial applications, given the good TRS yields obtained, and the associated enzyme and time/energy savings. The use of sulfolane-TiO2 reaction medium is encouraged if saccharinic acids are to be recovered too.
PB MDPI
SN 1996-1073
YR 2019
FD 2019
LK https://uvadoc.uva.es/handle/10324/55989
UL https://uvadoc.uva.es/handle/10324/55989
LA eng
NO Energies, 2019, vol. 12, n. 9, 1703
NO Producción Científica
DS UVaDOC
RD 24-nov-2024