Abstract
Concentrated hydrochloric acid-driven hydrolysis provides the most powerful and industrially proven technology for converting all cellulosic wastes—wood, solids from city sewage plants, bagasse, grasses, etc. — to sugars that can be fermented to ethanol or other biofuels as well as a large variety of bio-products and food and feed.
Our process begins by steam expansion of debarked chipped wood, which undergoes a pre-extraction stage to remove all extractives, for example, tall oils and ash. The pre-extracted wood continues into hydrolysis stage performed using highly concentrated HCl at low-temperature (10–15 °C), thus affording sugars hydrolyzate (98 % of the theoretically available sugars, composing 65 % of the dry weight of the wood chips for pine wood, are converted into sugars) with minimum degradation products, while simultaneously separating the solid lignin.
A key limitation to any concentrated acid hydrolysis is the difficulty in recovering the acid. In particular, HCl solution forms an azeotrope at between 21 and 25 % depending on the pressure; simple distillation cannot concentrate a dilute solution beyond the azeotropic point. The efficiency of acid recovery is a key condition to making acid hydrolysis of lignocellulosic materials an economically viable source of fermentable sugars.
Full recovery of HCl at high acid concentration and its reuse yields very minor waste stream, no complicating air emissions, and favorable life cycle analysis.
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References
Hall JA, Saeman JF, Harris JF (1956) Wood saccharification. Unasylva—Int Rev For For Prod 10:1
Sjostrom E (1993) Wood chemistry. In: Fundamentals and applications, 2nd edn. Academic Press, San Diego, p 292
Excoffier G, Toussaint B, Vignont MR (1991) Biotechnol Bioeng 38:11
Perlack RD, Wright LL, Turhollow AF, Graham RL, Stokes BJ, Erbach DC (2005) Biomass as feedstock for a bioenergy and bioproducts industry: the technical feasibility of a bil-lion-ton annual supply. Study prepared by the U.S. Department of Energy (DOE) and the U.S. Department of Agriculture (USDA)
Mosier N, Wyman C, Dale B, Elander R, Lee YY, Holtzapple M, Ladisch M (2005) Bioresour Technol 96(6):673
Klinke HB, Thomsen AB, Ahring BK (2004) Appl Microbiol Biotechnol 66(1):10
Olsson L, Hahn-Hagerdal B (1996) Enzyme Microb Technol 18(5):312
Palmqvist E, Hahn-Hagerdal B (2000) Bioresour Technol 74(1):17
Olsson L, Hahn-Hagerdal B (1996) Fermentation of lignocellulosic hydrolysates for ethanol production. Enzyme Microb Technol 18:312
Grethlein HE, Converse AO (1991) Common aspects of acid prehydrolysis and steam explosion for pretreating wood. Bioresour Technol 36:77; Torget R, Hsu TA (1994) Two-temperature dilute acid prehydrolysis of hardwood xylan using a percolation process. Appl Biochem Biotechnol 45–46:23
Kucuk MM, Demirbas A (1997) Biomass conversion processes. Energy Convers Manage 38:151
Demirbas A (2008) Products from lignocellulosic materials via degradation processes. Energy Sources Part A 30(1):27
Willstatter R (1913) Ber Dtsch Chem Ges 46:2405
Hagglund E (1939) Holzchemie 2. Aufl., Akad, Verlagsges, Leipzig, S 268 ff
Weinberg AV (1919) Emil Fischers Tatigkeit Wahrend des Krieges. Naturw 7:870; and Willstatter R (1949) Aus meinem leben, Verlag Chemie S 223
Schoenemann K (1953) Paper presented to the congress of the food and agriculture organisation of the United Nations, Stockholm, 27 July 1953
Buch V, Dubrovskiy A, Mohamed F, Parrinello M, Sadlej J, Hammerich AD, Devlin JP (2008) HCl hydrates as model systems for protonated water. J Phys Chem A 112(11):2144
Botti A, Bruni F, Ric-ci MA, Soper AK (2006) Eigen versus Zundel complexes in HCl-water mixtures. J Chem Phys 125:1
Eyal A, Baniel A (2009) A process for the recovery of HCl from a dilute solution thereof and extractant composition for use therein, Assigned to HCL CleanTech Ltd. WO 2009/125400 A2
Drew J, Propst M (1981) Tall oil, compiled and edited by Pulp Chemicals Association. Pulp Chemicals, New-York
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Zviely, M. (2013). Converting Lignocellulosic Biomass to Low-Cost Fermentable Sugars. In: Fang, Z. (eds) Pretreatment Techniques for Biofuels and Biorefineries. Green Energy and Technology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-32735-3_7
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DOI: https://doi.org/10.1007/978-3-642-32735-3_7
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