Frontiers of Chemical Science and Engineering >
Kinetic studies of xylan hydrolysis of corn stover in a dilute acid cycle spray flow-through reactor
Received date: 06 Apr 2010
Accepted date: 18 Oct 2010
Published date: 05 Jun 2011
Copyright
Xylan of corn stover was pretreated with 1%, 2% and 3% (w/w) sulfuric acid at relatively low temperatures (90°C, 95°C and 100°C) in a dilute acid cycle spray flow-through reactor (DCF). The hydrolysis of xylan to its monomeric xylose was modeled by a series of first-order reactions. Both biphasic and Saeman hydrolysis models were applied to fit the experimental data. The results confirmed that the kinetic data of xylan hydrolysis fitted a first-order irreversible reaction model and the experimental data. The reaction rates of xylose monomer formation and degradation were sensitive to catalyst concentration and temperature. Higher catalyst concentration and lower reaction temperature result in high xylose yield. The activation energy for xylose formation and degradation were determined to be 112.9 and 101.0 kJ·mol-1, respectively. Over 90% theoretical xylose obtained from corn stover can be used to produce ethanol, xylitol and fumaric acid by fermentation.
Key words： corn stover; xylan hydrolysis; biphasic model; Saeman model; cycle spray; kinetics
Hongman ZHANG , Qiang JIN , Rui XU , Lishi YAN , Zengxiang LIN . Kinetic studies of xylan hydrolysis of corn stover in a dilute acid cycle spray flow-through reactor[J]. Frontiers of Chemical Science and Engineering, 2011 , 5(2) : 252 -257 . DOI: 10.1007/s11705-010-1010-y
| 1 |
Yang B, Wyman C E. Pretreatment: the key to unlocking low-cost cellulosic ethanol. Biofuels. Bioprod and Bioref, 2008, 2(1): 26-40
|
| 2 |
Sun Y, Cheng J. Hydrolysis of lignocellulosic materials for ethanol production: a review. Bioresource Technology, 2002, 83(1): 1-11
|
| 3 |
Mamman A S, Lee J M, Kim Y C, Hwang I T, Park N J, Hwang Y K, Chang J S, Hwang J S. Furfural: hemicellulose/xylose derived biochemical. Biofuels. Bioprod and Bioref, 2008, 2(5): 438-454
|
| 4 |
Kumar P, Barrett D M, Delwiche M J, Stroeve P. Methods for pretreatment of lignocellulosic biomass for efficient hydrolysis and biofuel production. Industrial & Engineering Chemistry Research, 2009, 48(8): 3713-3729
|
| 5 |
Torget R W, Kim J S, Lee Y Y. Fundamental aspects of dilute acid hydrolysis/fractionation kinetics of hardwood carbohydrates. 1. Cellulose hydrolysis. Industrial & Engineering Chemistry Research, 2000, 39(8): 2817-2825
|
| 6 |
Yan L, Zhang H, Chen J, Lin Z, Jin Q, Jia H, Huang H. Dilute sulfuric acid cycle spray flow-through pretreatment of corn stover for enhancement of sugar recovery. Bioresource Technology, 2009, 100(5): 1803-1808
|
| 7 |
Lavarack B P, Griffin G J, Rodman D. The acid hydrolysis of sugarcane bagasse hemicellulose to produce xylose, arabinose, glucose and other products. Biomass and Bioenergy, 2002, 23(5): 367-380
|
| 8 |
Liu C, Wyman C E. The effect of flow rate of very dilute sulfuric acid on xylan, lignin, and total mass removal from corn stover. Industrial & Engineering Chemistry Research, 2004, 43(11): 2781-2788
|
| 9 |
Zhu Y, Lee Y Y, Elander R T. Dilute-acid pretreatment of corn stover using a high-solids percolation reactor. Applied Biochemistry and Biotechnology, 2004, 117(2): 103-114
|
| 10 |
Lee Y Y, Iyer P, Torget R W. Dilute-acid hydrolysis of lignocellulosic biomass. Advances in Biochemical Engineering/Biotechnology, 1999, 65: 93-115
|
| 11 |
Jacobsen S E, Wyman C E. Cellulose and hemicellulose hydrolysis models for application to current and novel pretreatment processes. Applied Biochemistry and Biotechnology, 2000, 84-86(1-9): 81-96
|
| 12 |
Esteghlalian A, Hashimoto A G, Fenske J J, Penner M H. Modeling and optimization of the dilute-sulfuric-acid pretreatment of corn stover, poplar and switchgrass. Bioresource Technology, 1997, 59(2-3): 129-136
|
| 13 |
Springer E L, Harris J F. Procedures for determining the neutralizing capacity of wood during hydrolysis with mineral acid solutions. Industrial & Engineering Chemistry Product Research and Development, 1985, 24(3): 485-489
|
| 14 |
Lloyd T A, Wyman C E. Predicted effects of mineral neutralization and bisulfate formation on hydrogen ion concentration for dilute sulfuric acid pretreatment. Applied Biochemistry and Biotechnology, 2004, 115: 1013-1022
|
| 15 |
Yat S C, Berger A, Shonnard D R. Kinetic characterization for dilute sulfuric acid hydrolysis of timber varieties and switchgrass. Bioresource Technology, 2008, 99(9): 3855-3863
|
| 16 |
Lu Y, Mosier N S. Kinetic modeling analysis of maleic acid-catalyzed hemicellulose hydrolysis in corn stover. Biotechnology and Bioengineering, 2008, 101(6): 1170-1181
|
| 17 |
Kálmán G, Varga E, Réczey K. Dilute sulphuric acid pretreatment of corn stover at long residence times. Chemical and Biochemical Engineering Quarterly, 2002, 16(4): 151-157
|
| 18 |
Lu X B, Zhang Y M, Liang Y, Yang J, Dan H B. Modeling and optimization of the dilute sulfuric acid treatment on corn stover at low temperature. Chemical and Biochemical Engineering Quarterly, 2008, 22(2): 137-142
|
| 19 |
Yuan C M, Yan Y J, Ren Z W, Li T C, Cao J Q. Kinetics of sawdust hydrolysis with dilute hydrochloric acid and ferrous chloride. Chinese Journal of Process Engineering, 2004, 4: 64-68
|
/
| 〈 |
|
〉 |