TY - JOUR
T1 - Hydrolysis characteristics of sugarcane bagasse pretreated by dilute acid solution in a microwave irradiation environment
AU - Chen, Wei-Hsin
AU - Ye, Song Ching
AU - Sheen, Herng Kuang
PY - 2012/1/1
Y1 - 2012/1/1
N2 - Pretreatment of lignocellulosic biomass is of the utmost importance for the development of bioethanol because of the abundance and low cost of lignocelluloses. To figure out the hydrolysis characteristics of sugarcane bagasse in a microwave irradiation environment, the biomass is pretreated by a dilute sulfuric acid solution at 180 °C for 30. min, with the concentration ranging from 0 to 0.02. M. A variety of analyses, including fiber analysis, TGA, XRD, FTIR and HPLC, are employed to aid in understanding the physical and chemical characteristics of residual solid particles and solutions. A higher concentration is conducive to destroying bagasse; however, the buffering capacity possessed by the biomass is also observed in the pretreatment. The experimental results indicate that around 40-44. wt% of bagasse is degraded from the pretreatment in which around 80-98% of hemicellulose is hydrolyzed. In contrast, crystalline cellulose and lignin are hardly affected by the pretreatment. The maximum yields of xylose and glucose as well as the minimum furfural selectivity occur at the acid concentration of 0.005. M. Consequently, the aforementioned concentration is recommended for bagasse pretreatment and bioethanol production.
AB - Pretreatment of lignocellulosic biomass is of the utmost importance for the development of bioethanol because of the abundance and low cost of lignocelluloses. To figure out the hydrolysis characteristics of sugarcane bagasse in a microwave irradiation environment, the biomass is pretreated by a dilute sulfuric acid solution at 180 °C for 30. min, with the concentration ranging from 0 to 0.02. M. A variety of analyses, including fiber analysis, TGA, XRD, FTIR and HPLC, are employed to aid in understanding the physical and chemical characteristics of residual solid particles and solutions. A higher concentration is conducive to destroying bagasse; however, the buffering capacity possessed by the biomass is also observed in the pretreatment. The experimental results indicate that around 40-44. wt% of bagasse is degraded from the pretreatment in which around 80-98% of hemicellulose is hydrolyzed. In contrast, crystalline cellulose and lignin are hardly affected by the pretreatment. The maximum yields of xylose and glucose as well as the minimum furfural selectivity occur at the acid concentration of 0.005. M. Consequently, the aforementioned concentration is recommended for bagasse pretreatment and bioethanol production.
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U2 - 10.1016/j.apenergy.2011.12.014
DO - 10.1016/j.apenergy.2011.12.014
M3 - Article
AN - SCOPUS:84857998102
SN - 0306-2619
VL - 93
SP - 237
EP - 244
JO - Applied Energy
JF - Applied Energy
ER -