Effect of refining on enzymatic hydrolysis of green liquor pretreated mixed hardwoods

JIN Yongcan, Houmin Chang, Hasan Jameel, Richard Phillips

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2013, Vol. 37 ›› Issue (06) : 116-120.

PDF(599968 KB)
南京林业大学学报（自然科学版）
PDF(599968 KB)
JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2013, Vol. 37 ›› Issue (06) : 116-120. DOI: 10.3969/j.issn.1000-2006.2013.06.023

Effect of refining on enzymatic hydrolysis of green liquor pretreated mixed hardwoods

  • JIN Yongcan1, 2, Houmin Chang2, Hasan Jameel2, Richard Phillips2
Author information +
History +

Abstract

Green liquor consists of sodium carbonate and sodium sulfide and is readily available in any kraft mill. Effects of refining on improving enzymatic hydrolysis was investigated using green liquor pretreated mixed hardwoods at 12% total titratable alkali charge. The sugar yield increases with the PFI revolution. Adding 1% NaOH during refining did not affect on pulp freeness significantly, but could effectively improve the sugar yield of enzymatic hydrolysis. Compared with controlled green liquor pretreated pulp without refining, a remarkable increase in sugar yield was achieved at a low enzyme loading after the pulp was refined by a PFI mill. Meanwhile, an obvious increase in sugar yield could be obtained in the initial 6 or 12 h of enzymatic hydrolysis with the same cellulase loading after pulp refined by PFI mill. The results indicate that refining has a great feasibility for increasing the accessibility of the cellulose and improving the enzymatic hydrolysis of lignocellulosic biomass.

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations
JIN Yongcan, Houmin Chang, Hasan Jameel, Richard Phillips. Effect of refining on enzymatic hydrolysis of green liquor pretreated mixed hardwoods[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2013, 37(06): 116-120 https://doi.org/10.3969/j.issn.1000-2006.2013.06.023

References

[1] Taherzadeh M J, Karimi K. Enzyme-based hydrolysis processes for ethanol from lignocellulosic materials: a review[J]. BioResources, 2007, 2(4):707-738.
[2] Cardona C A, Sanches O J. Fuel ethanol production: Process design trends and integration opportunities[J]. Bioresour Technol, 2007, 98:2415-2457.
[3] Zhao Y, Wang Y, Zhu J Y, et al. Enhanced enzymatic hyrolysis of spruce by alkaline pretreatment at low tem-perature[J]. Biotechnol Bioeng, 2008, 99(6):1320-1328.
[4] Galbe M, Zacchi G. Pretreatment of lignocellulosic materials for efficient bioethanol production[J]. Adv Biochem Eng/Biotechno, 2007, 108:41-65.
[5] Mabee W E, Gregg D J, Arato C, et al. Updates on softwood-to-ethanol process development[J]. Appl Biochem Biotech, 2006, 129(13):55-70.
[6] Pan X, Xie D, Gilkes N, et al. Strategies to enhance the enzymatic hydrolysis of pretreated softwood with high residual lignin content[J]. Appl Biochem Biotech, 2005, 121-124:1069-1079.
[7] Pan X, Xie D, Yu R W, et al. Pretreatment of lodgepole pine killed by mountain pine beetle using the ethanol organosolv process: Fractionation and process optimization[J]. Ind Eng Chem Res, 2007, 46(8):2609-2617.
[8] Wyman C E, Dale B E, Elander R T, et al. Coordinated development of leading biomass pretreatment technologies[J]. Bioresour Technol, 2005, 96:1959-1966.
[9] Olsson L, Hahn-H gerdal B. Fermentation of lignocellulosic hydrolysates for ethanol fermentation[J]. Enzyme Microb Technol, 1996, 18: 312-331.
[10] Palmqvist E, Hahn-H gerdal B. Fermentation of lignocellulosic hydrolysates(I). Inhibition and deoxification[J]. Bioresour Technol, 2000, 74: 17-24.
[11] Jin Y, Jameel H, Chang H M, et al. Green liquor pretreatment of mixed hardwood for ethanol production in a repurposed kraft pulp mill[J]. J Wood Chem Technol, 2010, 30:86-104.
[12] Wu S, Chang H M, Jameel H, et al. Novel green liquor pretreatment of loblolly pine chips to facilitate enzymatic hydrolysis into fermentable sugars for ethanol production[J]. J Wood Chem Technol, 2010, 30:205-218.
[13] Burke M J, Saville B, Ishizawa C. Treatment of lignocellulosic materials utilizing disk refining and enzymatic hydrolysis 20090098618[P]. US Patent, 2009.
[14] Vroom K. The H factor: a means of expressing cooking times and temperatures as a single variable[J]. Pulp Pap Mag Can, 1957, 58:225-231.
[15] Ghose T K. Measurement of cellulase activities[J]. Pure Appl Chem, 1987, 59(2): 257-268.
[16] Sjöström E. Wood Chemistry: Fundamentals and Applications[M]. New York: Academic Press, 1993.
[17] Lu Y, Yang B, Gregg D, et al. Cellulase adsorption and an evaluation of enzyme recycle during hydrolysis of steam-exploded softwood residues[J]. Appl Biochem Biotechnol, 2002, 98-100: 641-654.
[18] Varga E, Schmidt A S, R czey K, et al. Pretreatment of corn stover using wet oxidation to enhance enzymatic digestibility[J]. Appl Biochem Biotechnol, 2003, 104: 37-50.
[19] Smook G A. Handbook for Pulp & Paper Technologists[M].2nd Edition. Vancouver: Angus Wilde Publications Inc, 1997.
PDF(599968 KB)

Accesses

Citation

Detail
Sections
Recommended
The full text is translated into English by AI, aiming to facilitate reading and comprehension. The core content is subject to the explanation in Chinese.

Author

Reader

Reviewer

www.nldxb.njfu.edu.cn

Edited ＆ Published by Editorial Department of Nanjing Forestry University(Natural Sciences Edition)
Address： No.159 Longpan Road,Nanjing 210037 Jiangsu,P.R.China
E-mail ：xuebao@njfu.edu.cn , xuebao@njfu.com.cn
Telephone +86-25-85428247,85427076
Distributed by China International Book Trading Corporation P.O. Box 399, Beijing ,P.R. China

/

〈 〉