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Received March 3, 2011
Accepted April 6, 2011
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Sequential hydrolysis of hemicellulose and lignin in lignocellulosic biomass by two-stage percolation process using dilute sulfuric acid and ammonium hydroxide
1Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA 50011, United States, USA 2Department of Natural Resource Ecology and Management, Iowa State University, Ames, IA 50011, United States, USA
thkim@iastate.edu
Korean Journal of Chemical Engineering, November 2011, 28(11), 2156-2162(7), 10.1007/s11814-011-0093-6
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Abstract
To obtain the total fractionation and pretreatment of the corn stover, two-stage percolation process was investigated. This process consists of two steps: use of 0.07 wt% sulfuric acid for hemicellulose recovery in first stage and ARP (ammonia recycled percolation) in the following stage for lignin recovery. Among tested conditions, the best conditions of two-stage process were as follows: 1st stage; 170 ℃, 2.5 ml/min, 30 minutes using 0.07 wt% sulfuric acid and 2nd stage; 170 ℃, 5.0 ml/min, 60minutes using 15 wt% ammonium hydroxide. At above two-stage treatment conditions, the hemicellulose in corn stover was easily hydrolyzed (95%) and recovered with high yields (86%) and the extent of the lignin removal was 81%. After two-stage process, the treated biomass contained nearly pure glucan (85%). Two-stage treatment brought about enzymatic digestibility of 90% and 89% with 60 and 15 FPU/g glucan cellulase enzyme loadings, respectively.
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Kong R, Engler CR, Soltes EJ, Appl. Biochem. Biotechnol., 34, 23 (1992)
Caufield DF, Moore WE, Wood Sci., 6(4), 375 (1974)
Sasaki T, Tanaka T, Nanbu N, Sato Y, Kainuma K, Biotechnol. Bioeng., 21, 1031 (1979)
Fan LT, Lee YH, Beardmore DH, Biotechnol. Bioeng., 22, 177 (1980)
Burns DS, Oshima H, Converse AO, Appl. Biochem. Biotechnol., 20/21, 79 (1989)
Puri VP, Biotechnol. Bioeng., 26, 1219 (1984)
Jeong TS, Um BH, Kim JS, Oh KK, Appl. Biochem. Biotechnol., 161(1-8), 22 (2010)
Kim JS, Park SC, Kim JW, Park JC, Park SM, Lee JS, Biores. Technol., 101, 4801 (2010)
Kim TH, Kim JS, Sunwoo C, Lee YY, Bioresour. Technol., 90(1), 39 (2003)
Kim TH, Lee YY, Bioresour. Technol., 97(2), 224 (2006)
Li JB, Henriksson G, Gellerstedt G, Bioresour. Technol., 98(16), 3061 (2007)
Pandey MP, Kim CS, Chem. Eng. Technol., 34(1), 29 (2011)
Kim TH, Taylor F, Hicks KB, Biores. Technol., 99(13), 5694 (2008)
Kim TH, Lee YY, Sunwoo C, Kim JS, Appl. Biochem. Biotechnol., 133(1), 41 (2006)
Kim TH, Lee YY, Bioresour. Technol., 96(18), 2007 (2005)
Kim JS, Kim H, Lee JS, Lee JP, Park SC, Appl. Biochem. Biotechnol., 148 (2008)
NREL, Chemical Analysis and Testing Laboratory Analytical Procedures (CAT), National Renewable Energy Laboratory, Golden, Golden, CO. (2008)
Segal L, Loeb L, Creely JJ, J. Polym. Sci., XIII, 193 (1954)
Segal L, Creely JJ, Martin AE Jr, Conrad CM, Textile Res.J., 29, 786 (1959)
Lewin M, Roldan LG, J. Polym. Sci. Part C., 36, 213 (1971)
Baek SW, Kim JS, Park YK, Kim YS, Oh KK, Biotechnol. Bioprocess Eng., 13, 332 (2008)
Xiang Q, Lee YY, Torget RW, Appl Biotechnol. Biochem., 115, 1127 (2004)
Genco JM, Miller W, Zou H, Cole BJW, Liukkonen A, Effect of Kraft pulping on oxygen delignification kinetics, Pulping conference, San Francisco, Oct. 19-23, 1, TAPPI Press, Norcross, GA, USA (1997)
Lora JH, Wayman M, TAPPI., 61, 47 (1978)
Xu H, Lai YZ, J. Wood Chem. Technol., 19, 1 (1999)
