Comparison of Different Pretreatment Methods on Sugarcane Bagasse and Fractal-like Kinetics of Enzymatic Hydrolysis

ZHANG Yu; XU Jing-liang; YUAN Zhen-hong; LIU Yun-yun; HE Min-chao

doi:10.3969/j.issn.2095-560X.2013.02.007

Advances in New and Renewable Energy >

2013 , Vol. 1 >Issue 2: 166 - 169

DOI: https://doi.org/10.3969/j.issn.2095-560X.2013.02.007

Comparison of Different Pretreatment Methods on Sugarcane Bagasse and Fractal-like Kinetics of Enzymatic Hydrolysis

ZHANG Yu ,
XU Jing-liang ,
YUAN Zhen-hong ,
LIU Yun-yun ,
HE Min-chao

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CAS Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China

Received date: 2013-08-08

Revised date: 2013-08-21

Online published: 2013-10-31

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Abstract

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

Cite this article

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

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