Advances in New and Renewable Energy >
Comparison of Different Pretreatment Methods on Sugarcane Bagasse and Fractal-like Kinetics of Enzymatic Hydrolysis
Received date: 2013-08-08
Revised date: 2013-08-21
Online published: 2013-10-31
NaOH (0.45 mol/L aq.), HCl (0.034 mol/L aq.) and LHW (liquid hot water) were used to pretreat bagasse, and the composition change and enzymatic saccharification were compared. NaOH pretreatment brought the highest lignin removal (91.1%) and 23.5% sugar loss; the similar composition variation occurred for HCl and LHW pretreatment, where the xylan dissolution were 85.2% and 79.7%, respectively. The sugar loss and lignin removal was both about 15% and less than 16%, respectively. After enzymatic saccharification, the total obtained sugar (glucose + xylose) concentration were 38.7, 16.1 and 15.6 g/L from NaOH, HCl and LHW pretreated sugarcane bagasse, respectively. The total sugar yield including the whole pretreatment and saccharification was: NaOH > HCl > LHW. As a persuasive tool, the fractal-like theory was used to study cellulase kinetics. Results showed that the irregularity of pretreated bagasse was: HCl > LHW > NaOH, and the absorbability was: NaOH > HCl > LHW.
Key words: sugarcane bagasse; pretreatment; cellulase; fractal-like kinetics; bioenergy
ZHANG Yu , XU Jing-liang , YUAN Zhen-hong , LIU Yun-yun , HE Min-chao . Comparison of Different Pretreatment Methods on Sugarcane Bagasse and Fractal-like Kinetics of Enzymatic Hydrolysis[J]. Advances in New and Renewable Energy, 2013 , 1(2) : 166 -169 . DOI: 10.3969/j.issn.2095-560X.2013.02.007
/
〈 |
|
〉 |