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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

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.

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

References

[1] Lang A, Kopetz H, Parker A. Biomass energy holds big promise[J]. Nature, 2012, 488(7413): 590-591.

[2] Tilman D, Socolow R, Foley J A, et al. Beneficial Biofuels-The Food, Energy, and Environment Trilemma[J]. Science, 2009, 325(5938): 270-271.

[3] Alvira P, Tomás-Pejó E, Ballesteros M, et al. Pretreatment technologies for an efficient bioethanol production process based on enzymatic hydrolysis: A review[J]. Bioresource Technology, 2010, 101(13): 4851-4861.

[4] Taherzadeh M J, Karimi K. Pretreatment of lignocellulosic wastes to improve ethanol and biogas production: A review[J]. International Journal of Molecular Sciences, 2008, 9(9): 1621-1651.

[5] Bansal P, Hall M, Realff M J, et al. Modeling cellulase kinetics on lignocellulosic substrates[J]. Biotechnology Advances, 2009, 27(6): 833-848.

[6] Li W Z, Xu H, Wang J, et al. Studies of monosaccharide production through lignocellulosic waste hydrolysis using double acids[J]. Energy & Fuels, 2008, 22(3): 2015-2021.

[7] Yu Q, Zhuang X S, Wang Q, et al. Hydrolysis of sweet sorghum bagasse and eucalyptus wood chips with liquid hot water[J]. Bioresource Technology, 2012, 116: 220-225.

[8] Yu Q, Zhuang X S, Lv S L, et al. Liquid hot water pretreatment of sugarcane bagasse and its comparison with chemical pretreatment methods for the sugar recovery and structural changes[J]. Bioresource Technology, 2013, 129: 592-598.

[9] Wang W, Zhuang X S, Yuan Z H, et al. High consistency enzymatic saccharification of sweet sorghum bagasse pretreated with liquid hot water[J]. Bioresource Technology, 2012, 108: 252-257.

[10] Zhang Y, Xu J L, Qi W, et al. A Fractal-like kinetic equation to investigate temperature effect on cellulose hydrolysis by free and immobilized cellulase[J]. Applied Biochemistry and Biotechnology, 2012, 168(1): 144-153.

[11] Valjamae P, Kipper K, Pettersson G, et al. Synergistic cellulose hydrolysis can be described in terms of fractal-like kinetics[J]. Biotechnology and Bioengineering, 2003, 84(2): 254-257.

[12] Gan Q, Allen S J, Taylor G. Kinetic dynamics in heterogeneous enzymatic hydrolysis of cellulose: an overview, an experimental study and mathematical modelling[J]. Process Biochemistry, 2003, 38(7): 1003-1018.

 
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