Pretreatments to Enhance the Digestibility of Wheat Straw
International Journal of Sustainable and Green Energy
Volume 3, Issue 1, January 2014, Pages: 26-34
Received: Jan. 20, 2014; Published: Feb. 20, 2014
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Authors
Zahoor , National Key Laboratory of Crop Genetic Improvement,Huazhong Agriculture University, Wuhan 430070, China; Biomass and Bioenergy Research Centre,Huazhong Agriculture University, Wuhan 430070, China; College of Plant Science and Technology,Huazhong Agriculture University, Wuhan 430070, China; Department of Agronomy, Khyber Pakhtunkhwa Agricultural University, Peshawar 25130.Pakistan
Yuanyuan Tu, National Key Laboratory of Crop Genetic Improvement,Huazhong Agriculture University, Wuhan 430070, China; Biomass and Bioenergy Research Centre,Huazhong Agriculture University, Wuhan 430070, China; College of Plant Science and Technology,Huazhong Agriculture University, Wuhan 430070, China
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Abstract
Wheat straw is a sufficient agricultural by-product with a low market price. The biofuel produced from lignocellulosic material exhibits energetic, economic and environmental benefits in contrast to bio-ethanol from starch or sugar. Until now, physical and chemical difficulty caused by the close connection of the main components of lignocellulosic biomass, discourage the hydrolysis of cellulose and hemicellulose to fermentable sugars. The main purpose of pretreatment is to enhance the enzyme accessibility improving digestibility of cellulose. Every pretreatment has a particular effect on the fraction of cellulose, hemicellulose and lignin, thus different pretreatment methods and conditions should be selected for the development of subsequent hydrolysis and fermentation steps. This paper reviews the most importance technologies for ethanol production from lignocellulose and its represent several vital qualities that should be marked for low-price and promote pretreatment processes.
Keywords
Wheat Straw, Lignocellosic, Cellulose, Hemicelluloses, Lignin
To cite this article
Zahoor , Yuanyuan Tu, Pretreatments to Enhance the Digestibility of Wheat Straw, International Journal of Sustainable and Green Energy. Vol. 3, No. 1, 2014, pp. 26-34. doi: 10.11648/j.ijrse.20140301.15
References
[1]
Alfani, F. Gallifuoco, A. Saporosi, A. Spera and M. Cantarella, "Comparison of SHF an SSF process for the bioconversion of steam-exploded wheat straw," J. Ind. Microbiol. Biotechnol, vol. 25, pp. 184–192, 2000.
[2]
Hideno, H. Inoue, K. Tsukahara, S. Fujimoto, T. Minowa, S. Inoue, T. Endo and S. Sawayama, "Wet disk milling pretreatment without sulfuric acid for enzymatic hydrolysis of rice straw," Bioresour. Technol, vol. 100, pp. 2706–2711, 2009.
[3]
R. Hector, P. S. Daniel, S. R. Denise, F.L. Luis, A.V. Antonio and A.T.Jose, "Bioethanol production from hydrothermal pretreated wheat straw by a flocculating Saccharomyces cerevisiae strain – Effect of process conditions," Fuel, vol. 95, pp. 528–536, 2012.
[4]
Zhou and E. Thomson, "The development of biofuels in Asia," Appl Energy, vol. 86, pp.11–20, 2009.
[5]
A.B. Bjerre, A.B. Olesen, T. Fernqvist, A. Ploger, A.S. Schmidt, " Pretreatment of wheat straw using alkaline wet oxidation and alkaline hydrolysis resulting in convertible cellulose and hemicellulose" Biotech. Bioeng, vol. 49, pp. 568–577, 1996.
[6]
A.S.A. Silva, H. Inoue, T. Endo, S.Yano and E.P.S. Bon, "Milling pretreatment of sugarcane bagasse and straw for enzymatic hydrolysis and ethanol fermentation," Bioresour. Technol, vol. 101, pp.7402–7409, 2010.
[7]
A.T.W.M. Hendriks, G. Zeeman, "Pretreatments to enhance the digestibility of lignocellulosic biomass," Bioresour. Technol, vol. 100, pp. 10–18, 2009.
[8]
Lamsal, J. Yoo, K. Brijwani, S. Alavi, "Extrusion as a thermo-mechanical pre-treatment for lignocellulosic ethanol," Biom. Bioenerg, vol. 34, pp. 1703–1710, 2010.
[9]
Yang and C.E. Wyman, "Pretreatment: the key to unlocking low-cost cellulosic ethanol," Biofuels Bioprod. Bior, vol. 2, pp. 26–40, 2008.
[10]
B.C. Saha and M.A. Cotta, "Ethanol production from alkaline peroxide pretreated enzymatically saccharified wheat straw," Biotechnol Prog, vol. 22, pp.449–53, 2006.
[11]
B.E. Dale, M.J. Moreira, "A freeze-explosion technique for increasing cellulose hydrolysis," Biotech. Bioeng. Symp, vol. 12, pp. 31–44, 1982.
[12]
Karunanithy and K. Muthukumarappan, "Optimization of big bluestem and extruder parameters for enzymatic hydrolysis using response surface methodology," Inter. J. Agric. Biol. Eng, vol. 4(1), pp. 61–74, 2011c.
[13]
Karunanithy and K. Muthukumarappan, "Optimization of extruder and prairie cord grass parameters for maximum sugar recovery through enzymatic hydrolysis," J. Biobased Mat. Bioenerg, vol. 5(4), pp. 520–531, 2011d.
[14]
Karunanithy and K. Muthukumarappan, "Optimization of switchgrass and extruder parameters for enzymatic hydrolysis using response surface methodology," Ind. Crops. Prod, Vol. 33(1), pp. 188–199, 2011b.
[15]
Karunanithy, K. Muthukumarappan, "Optimization of corn stover and extruder parameters or enzymatic hydrolysis using response surface methodology" Biol. Eng, vol. 3(2), pp. 73–95, 2011.
[16]
Liu and C.E. Wyman, "Partial flow of compressed-hot water through corn stover to enhance hemicellulose sugar recovery and enzymatic digestibility of cellulose," Bioresour. Technol, vol. 96, pp. 1978–1985, 2005.
[17]
C.S. Goh, K.T. Lee and S. Bhatia, Hot compressed water pretreatment of oil palm fronds to enhance glucose recovery for production of second generation bioethanol," Bioresour. Technol, vol. 101, pp. 7362–7367, 2010.
[18]
Dallinger, C.O. Kappe, " Microwave-assisted synthesis in water as solvent.Chem," Rev. vol. 107, pp. 2563–2591, 2007.
[19]
J. Schell, J. Farmer, M. Newman and J. D. McMillan, "Dilute sulfuric acid pretreatment of corn stover in pilot-scale reactor investigation of yields, kinetics, and enzymatic digestibilities of solids," Appl. Biochem. Biotechnol, vol. 105, pp. 69-85, 2003.
[20]
Jackowiak, D. Bassard, A. Pauss and T. Ribeiro, "Optimisation of a microwave pretreatment of wheat straw for methane production," Bioresour. Technol, vol. 102, pp. 6750–6756, 2011.
[21]
Sidiras and E. Koukios, "Simulation of acid-catalyzed organosolv fractionation of wheat stra,". Bioresour Technol, vol. 94. Pp. 91-98, 2004.
[22]
Viola, F. Zimbardi, M. Cardinale, G. Cardinale, G. Braccio and E. Gambacorta, " Processing cereal straws by steam explosion in a pilot plant to enhance digestibility in ruminants," Bioresour.Technol, vol. 99 (4), pp. 681–689, 2008.
[23]
Carvalheiro, L.C. Duarte and F.M. Girio, " Hemicellulose biorefineries: a review on biomass pretreatments,"J. Sci. Ind. Res, vol. 67, pp. 849–864, 2008.
[24]
Teymouri, L. Laureanoperez, H. Alizadeh, B. Dale, "Optimization of the ammonia fiber explosion (AFEX) treatment parameters for enzymatic hydrolysis of corn stover," Bioresource Technology, vol. 96, pp. 2014-2018, 2005.
[25]
G.D. McGinnis, W.W. Wilson and C.E. Mullen, "Biomass pretreatment with water and high pressure oxygen. The wet oxidation process," Ind. Eng. Chem. Prod. Res. Dev, vol. 22, pp. 352–357, 1983.
[26]
G.D.S. Gabriela, C. Marie, B. Jean-Guy, B. Alain and R. Xavier, "Effects of grinding processes on enzymatic degradation of wheat straw," Bioresour. Technol, vol. 103, pp. 192–200, 2012.
[27]
Alizadeh, F. Teymouri, T.I. Gilbert and B.E. Dale, "Pretreatment of switchgrass by ammonia fiber explosion (AFEX)," Appl. Biochem. Biotechnol, vol. 121, pp. 1133-1141, 2005.
[28]
Inoue, S. Yano, T. Endo, T. Sakaki, S. Sawayama, "Combining hot compressed water and ball milling pretreatments to improve the efficiency of the enzymatic hydrolysis of eucalyptus," Biotechnol. Biofuel, vol. 1, pp. 2, 2008.
[29]
H.K. Murnen, V. Balan, S.P.S. Chundawat, B. Bals, S.L. Da Costa and B.E Dale, "Optimization of ammonia fiber expansion (AFEX) pretreatment and enzymatic hydrolysis of Miscanthus × giganteus to fermentable sugars," Biotechnol. Prog, vol. 23, pp.846-850, 2007.
[30]
H.Z. Chen and L.Y. Liu, "Unpolluted fractionation of wheat straw by steam explosion and ethanol extraction," Bioresour. Technol, vol. 98 (3), pp. 666–676, 2007.
[31]
H.Z. Chen, "Process engineering in plant-based products," New York: Nova Science Publishers, Inc, 2009.
[32]
Ballesteros, M.J. Negro, J.M. Oliva, A. Cabanas, P. Manzanares and M. Ballesteros, "Ethanol production from steam-explosion pretreated wheat straw," Appl. Biochem. Biotechnol, vol. 129, pp. 496–508, 2006.
[33]
A. Perez, I. Ballesteros, M. Ballesteros, F. Saez, M.J. Negro and P. Manzanares, "Optimizing Liquid Hot Water pretreatment conditions to enhance sugar recovery from wheat straw for fuel-ethanol production," Fuel, vol. 87(18), pp. 3640–3647, 2008.
[34]
Michael, "Studies on the mechanism of alkaline peroxide delignification of agricultural residues," Biotechnol. Bioeng , vol. 1927, pp. 225–231, 1985.
[35]
J. Svein, D. Horn, Quang, Nguyen, B. Westereng, J. P. Nilsen and V.G.H. Eijsink, "Screening of steam explosion conditions for glucose production from non-impregnated wheat straw," Biomass and Bioenergy, vol. 35 no. 12, pp. 4879–4886, 2011.
[36]
Li, Y. Wang, Q. Zhang, J. Li, X. Yang, J. Jin, "Wheat straw burning and its associated impacts on Beijing air quality," Science in China Series D: Earth Sciences, vol. 51, pp. 403–414, 2008.
[37]
Lu. Jie, Li. Xue Zhi, Z. Jian, Qu. Yinbo, "Enzymatic Saccharification and Ethanol Fermentation of Reed Pretreated with Liquid Hot water," J.Biom. Biotechnol, Article. ID 276278, 2012.
[38]
Gallbe and G. Zacchi, "Pretreatment of lignocellulosic materials for efficientbioethanol," Adv. Biochem. Eng. Biotechnol, vol. 108, pp. 41–65. 2007.
[39]
M.J. Taherzadeh and K. Karimi, "Pretreatment of lignocellulosic wastes to improve ethanol and biogas production: A review," Int. J. Mol. Sci, vol. 9, pp.1621-1651, 2008.
[40]
M.W. Rosegrant, S. Msangi, T. Sulser, R. Valmonte-Santos, P. Hazell and R.K. Pachauri, "Biofuels and the global food balance IFPRI Focus 14," Brief 3 of 12, 2006.
[41]
Moiser, C. Wyman, B. Dale, R. Elander, Y.Y. Lee, M. Holtzapple and M. Ladisch, "Features of promising technologies for pretreatment of lignocellulosic biomass," Bioresour. Technol, vol. 96, pp. 673-686, 2005.
[42]
N.S. Mosier, A. Sarikaya, C.M. Ladisch, M.R. Ladisch, "Characterization of dicarboxylic acids for cellulose hydrolysis," Biotechnol. Progr, vol. 17, pp.474–480, 2001.
[43]
N.S. Mosier, R. Hendrickson, R. Dreschel, G. Welch, B.S. Dien, R. Bothast and M.R. Ladisch, "Principles and economics of pretreating cellulose in water for ethanol production," Paper 103, BIOT Division, 225th American Chemical Society Meeting, New Orleans, 26 March, 2003.
[44]
Adapa, L. Tabil and G. Schoenau, "Grinding performance and physical properties of non-treated and steam exploded barley, canola, oat and wheat straw," Biomass Bioenergy, Vol. 35, pp. 549-561, 2011.
[45]
Alvira, E. Tomas-Pejo, M. Ballesteros, M.J. Negro, "Pretreatment technologies for an efficient bioethanol production process based on enzymatic hydrolysis: a review" Bioresour. Technol. Vol. 101, pp. 4851–4861, 2010.
[46]
Bobleter, "Hydrothermal degradation of polymers derived from plants," Prog. Polym. Sci, vol. 19, pp. 797–841, 1994
[47]
P. Kumar, D.M. Barrett, M.J. Delwiche, P. Stroeve, "Methods for pretreatment of lignocellulosic biomass for efficient hydrolysis and biofuel production," Ind.Eng. Chem. Res, vol. 48 (8), pp. 3713–3729, 2009.
[48]
P.L. Beltrame, P. Carniti, A. Visciglio, B. Focher and A. Marzetti, "Fractionation and bioconversion of steam-exploded wheat straw,"Bioresour. Technol, vol. 39, pp.165–171, 1992.
[49]
Ortiz, K.D. Sayre, B. Govaerts, R. Gupta, G.V. Subbarao, T. Ban, D. Hodson, J.M. Dixon, J.I. Ortiz-Monasterio and M. Reynolds, "Climate change: can wheat beat the heat?" Agriculture, Ecosystems and Environment, vol. 126, pp.46–58, 2008.
[50]
Sun, J.M. lawther and W.B. Banks, "Influence of alkaline pre-treatments on the cell wall components wheat straw," Industrial crops and products, vol. 4, pp.127-145, 1995.
[51]
R. Torget, P. Walter, M. Himmel and K. Grohmann, "Dilute-acid pretreatment of corn residues and short-rotation woody crops," Appl. Biochem. Biotechnol, vol. 28-29, pp.75-86, 1991.
[52]
R.A. Silverstein, Y. Chen, R.R. Sharma-Shivappa, M.D. Boyette and J. Osborne, "A comparison of chemical pretreatment methods for improving saccharification of cotton stalks,"Bioresour. Technol, vol. 98, pp. 3000–3011, 2007.
[53]
R.C. Saxena, D.K. Adhikari and H.B. Goyal, "Biomass-based energy through biochemical routes: a review," Renew Sust Energy Rev, vol. 13, pp.167–78, 2009.
[54]
R.P. Chandra, R. Bura, W.E. Mabee, A. Berlin, X. Pan and J.N. Saddler, "Substrate pretreatment: the key to effective enzymatic hydrolysis of lignocellulosics. Adv. Biochem," Eng./Biotechnol, vol. 108, pp. 67–93, 2007.
[55]
R.W. Torget, M. Himmel and K. Grohmann, "Dilute acid pretreatment of two short-rotation herbaceous crops," Appl Biochem Biotechnol, vol.34/35, pp.115–23, 1992.
[56]
Beszedes, Z. Laszlo, Z.H. Horvath, G. Szabo and C. Hodur, "Comparison of the effects of microwave irradiation with different intensities on the biodegradability of sludge from the dairy- and meat-industry" Bioresour. Technol, vol. 102, pp. 814–821, 2011.
[57]
K. Parveen, M. Diane, Barrett M, J Michael, Delwiche and S. Pieter, "Methods for Pretreatment of Lignocellulosic Biomass for Efficient Hydrolysis and Biofuel Production," Ind. Eng. Chem Res, vol. 48 , pp. 3713-3729, 2009.
[58]
S. Mani, L.G. Tabil and S. Sokhansanj, "Grinding performance and physical properties of wheat and barley straws, corn stover and switchgrass," Biomass Bioenergy, vol. 27, pp. 339–352, 2004.
[59]
S. McIntosh and T. Vancov, "Optimization of dilute alkaline pretreatment for enzymatic Saccharification of wheat straw," Biomass Bioenergy, vol. 35, pp. 3094–3103, 2011.
[60]
S. Prasad, A. Singh and H.C. Joshi, "Ethanol as an alternative fuel from agricultural, industrial and urban residues," Resour. Conserv. Recy, vol. 50, pp.1–39, 2007.
[61]
S. Zhang, D.R. Keshwani, Y. Xu and M.A. Hanna, "Alkali combined extrusion pretreatment of corn stover to enhance enzyme saccharification," Ind Crops Prod, vol. 37, pp.352–357, 2012a.
[62]
S. Zhang, Y. Xu and M.A. Hanna, "Pretreatment of corn stover with twin-screw extrusion followed by enzymatic saccharification,"Appl Biochem Biotechnol, vol. 166, pp.458–469, 2012b.
[63]
S.B. Behzad, V. Manouchehr and A. Iran, " Optimisation of dilute-acid pretreatment conditions for enhancement sugar recovery and enzymatic hydrolysis of wheat straw" Biosys. Engin. Vol. 111, pp. 166 -174, 2012.
[64]
S.H. Lee, S. Inoue, Y. Teramoto and T. Endo, "Enzymatic saccharification of woody biomass micro/nanofibrillated by continuous extrusion process II: effect of hot-compressed water treatment," Bioresour. Technol, vol. 101, pp. 9645–9649, 2010.
[65]
S.H. Lee,Y. Teramoto, T. Endo, "Enzymatic saccharification of woody biomass micro/nanofibrillated by continuous extrusion process: I: effect of additives with cellulose affinity," Bioresour. Technol, vol. 100(1), pp. 275–279, 2009.
[66]
S.J. Horn and V.G.H. Eijsink, "Enzymatic hydrolysis of steam-exploded hardwood using short processing times," Biosci Biotechnol Biochem, vol. 74, pp. 1157–1163, 2010.
[67]
S.S. Anette and B. Anne, "Optimization of wet oxidation pretreatment of wheat straw" Bioresour. Technol, vol. 64, pp. 139-151, 1998.
[68]
A. Hsu, "Pretreatment of biomass. Handbook on Bioethanol: Production and Utilization," Taylor & Francis, Washington DC, USA. In: C. E. Wyman (ed.). pp. 179-195. 1996.
[69]
T. Ingram, T. Rogalinski, V. Bockem¨uhl, G. Antranikian, and G. Brunner, "Semi-continuous liquid hot water pretreatment of rye straw," The Journal of Supercritical Fluids, vol. 48, no. 3, pp. 238–246, 2009.
[70]
T. Vancov and S. McIntosh, "Effects of dilute acid pretreatment on enzyme saccharification of wheat stubble," J. Chem. Technol. Biotechnol, vol.86, pp.818–825, 2011.
[71]
T.C. Bradshaw, H. Alizadeh, F. Teymouri, V. Balan and B.E. Dale, "Ammonia fiber expansion pretreatment and enzymatic hydrolysis on two different growth stages of reed canarygrass,"Appl. Biochem. Biotechnol, vol.136, pp.395-405, 2007.
[72]
Runcang S, j. Mark lawther, w.b. Banks. Influence of alkaline pre-treatments on the cell wall componentswheat straw. Industrial crops and products 4 (1995) 127-145.
[73]
T.H. Kim, Y.Y. Lee, C. Sunwoo and S.K. Jun, "Pretreatment of corn stover by low-liquid ammonia recycle percolation process," Applied Biochemistry and Biotechnology, vol. 133, no. 1, pp. 41–57, 2006.
[74]
Chang, M. Holtzapple, "Fundamental factors affecting biomass enzymatic reactivity,"Appl. Biochem. Biotechnol. Vol. 84-86: pp. 5-37, 2000.
[75]
Jurisic, C. Karunanithy, J.L. Julson, "Effect of extrusion pretreatment on enzymatic hydrolysis of Miscanthus," St. Joseph, Mich. ASABE, Paper no. 097178, 2009.
[76]
B. Sang, J.S. Kim, Y.K. Park, Y.S. Kim, and K. KOh, "The effect of sugar decomposed on the ethanol fermentation and decomposition reactions of sugars," Biotechnol. Bioprocess En, vol. 13, pp. 332-341, 2008.
[77]
W. Jelle, Arjan, T. Smit, H.R. Johannes, J.J.H. Wouter, "Ethanol-based organosolv fractionation of wheat straw for the production of lignin and enzymatically digestible cellulose," Bioresour. Technol, vol. 135, pp. 58–66, 2013.
[78]
W. Weiqi, W. Shubin and L. Liguo, "Combination of liquid hot water pretreatment and wet disk milling to improve the efficiency of the enzymatic hydrolysis of eucalyptus," Bioresource Technology , vol.128, pp.725–730, 2013.
[79]
W.E. Kaar and M.T. Holtzapple, "Using lime pretreatment to facilitate the enzymic hydrolysis of corn stover," Biom. Bioenerg, vol. 18, pp. 189–199, 2000.
[80]
W.H. Chen, Y.Y. Xu, W.S. Hwang and J.B. Wang, "Pretreatment of rice straw using an extrusion/ extraction process at bench-scale for producing cellulosic ethanol," Bioresour. Technol, vol. 102, pp. 10451–10458, 2011.
[81]
W.J.J. Huijgen, A.T. Smit, P.J. De Wild, H. Den Uil, Fractionation of wheat straw by prehydrolysis, organosolv delignification and enzymatic hydrolysis for production of sugars and lignin," Bioresour. Technol, vol. 114, pp. 389–398, 2012.
[82]
W.J.J. Huijgen, J.H. Reith, H. Uil den, "Pretreatment and fractionation of wheat straw by an acetone-based organosolv process," Ind. Eng. Chem. Res, vol. 49, pp. 10132– 10140. 2010.
[83]
W.L. Ming, G. Christa and E. D. Bruce, "The impacts of pretreatment on the ferment ability of pretreated lignocellulosic biomass: a comparative evaluation between ammonia fiber expansion and dilute acid pretreatment," Biotechnol. Biofuel , vol. 2, pp. 30, 2009.
[84]
Li1, E. Ximenes, Y. Kim, M. Slininger, R. Meilan, M. Ladisch and C. Chapple, "Lignin monomer composition affects Arabidopsis cell-wall degradability after liquid hot water pretreatment," Biotechnology for Biofuels, vol. 3(27), pp. 1754-6834, 2010.
[85]
X. Pan, D. Xie and K.Y. Kang, "Effect of organosolv ethanol pretreatment variables on physical characteristics of hybrid poplar substrates," Appl. Biochem. Biotechnol, vol. 136/140: pp. 36 -377, 2007.
[86]
X. Zhao, F. Peng, K. Cheng and D. Liu, "Enhancement of the enzymatic digestibility of sugarcane bagasse by alkali–peracetic acid pretreatment," Enzyme Microb Technol, vol. 44, pp. 17–23, 2009.
[87]
X.B. Zhao, K.K. Cheng and D.H. Liu, "Organosolv pretreatment of lignocellulosic biomass for enzymatic hydrolysis,"Appl. Microbiol. Biotechnol, vol. 82 (5), pp.815, 2009.
[88]
Oktay and M. Giuseppe, "Optimization of furfural and 5-hydroxymethylfurfural production from wheat straw by a microwave-assisted process," Bioresour. Technology, vol. 109, pp. 215–223, 2012.
[89]
Y. Sun and J.J. Cheng, "Hydrolysis of lignocellulosic materials for ethanol production: a review," Bioresour Technol, vol. 83, pp. 1-11, 2002.
[90]
Y. Xu, K. Li and M. Zhang, "Lignin precipitation on the pulp fibers in the ethanol based organosolv pulping," Colloids Surf, vol.301 (1–3), pp.255–263, 2007.
[91]
Y. Xu, M. Zhang and K. Li, "Lignin reprecipitation on ethanol pulp fibres determined with AFM and XPS," Appita J, vol. 64 (3), pp. 278–283, 2011.
[92]
Y.S. Cheng, Y. Zheng, C.W. Yu, T.M. Dooley, B.M. Jenkins and J.S. Vander Gheynst, " Evaluation of high solids alkaline pretreatment of rice straw," Appl. Biochem. Biotechnol, vol. 162, pp. 1768–84, 2010.
[93]
Sapci, J. Morken, and R. Linjordet, "An Investigstion of the enhancement of Biogas yields from lignocellusic Material using two pretreatment methods Micowave irradiation and steam explosion ,"Bio Resource, vol. 8(2), pp.1976-1985, 2013.
[94]
Kristensen, J. Thygesen, L.G. Felby C. "Jørgensen H. Elder T. Cell-wall structural changes in wheat straw pretreated for bioethanol production," Biotechnology for Biofuels, pp1:5, 2008.(http://www.biotechnologyforbiofuels.com/1754-6834/1/5).
[95]
Choudhary, R. Umagiliyage, A.L. Liang, Y. Siddaramu, T. Haddock, J. Markevicius, G. "Microwave pretreatment for enzymatic saccharification of sweet sorghum bagasse, Biomass and Bioenergy, vol. 39, pp.218–26,2012.
[96]
Pedersen, M. Meyer A.S. "Influence of Substrate Particle Size and Wet Oxidation on Physical Surface Structures and Enzymatic Hydrolysis of Wheat Straw ," Biotechnol. Prog, Vol. 25, No. 2, 2009.
[97]
Wildschut, J. Smit, A.T. Reith, J.H. Huijgen, W.J.J. "Ethanol-based organosolv fractionation of wheat straw for the production of lignin and enzymatically digestible cellulose," Bioresource Technology, vol.135,pp.58–66, 2013.
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