Abstract

Sugar-cane bagasse and leaves (10−15 g oven-dry basis) were fractionated without size reduction by a rapid (45 s to 4 min), immersed percolation using only hot (190−230 °C), compressed (P > Psat), liquid water (0.6−1.2 kg). Over 50% of the biomass could be solubilized. All of the hemicellulose, together with much of the acid-insoluble lignin in the bagasse (>60%), was solubilized, while less than 10% of the cellulose entered the liquid phase. Moreover, recovery of the hemicellulose as monomeric sugars (after a mild posthydrolysis) exceeded 80%. Less than 5% of the hemicellulose was converted to furfural. Percolation beyond that needed to immerse the biomass in hot liquid water did not result in increased solubilization. The yield of lignocellulosic residue was also not sensitive to the form of the sugar cane used (bagasse or leaves) or its moisture content (8−50%). Commercial applications for this fractionation process include the pretreatment of lignocellulosics for bioconversion to ethanol and the production of pulp and paper products.

Keywords

BagasseHemicelluloseLigninChemistryCellulosePulp and paper industryBioconversionFractionationLignocellulosic biomassSugarPulp (tooth)CaneSteam explosionFurfuralChromatographyFood scienceFermentationBiochemistryOrganic chemistry

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Publication Info

Year
1996
Type
article
Volume
35
Issue
8
Pages
2709-2715
Citations
187
Access
Closed

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Cite This

Stephen G. Allen, Lance C. Kam, Andreas Joseph Zemann et al. (1996). Fractionation of Sugar Cane with Hot, Compressed, Liquid Water. Industrial & Engineering Chemistry Research , 35 (8) , 2709-2715. https://doi.org/10.1021/ie950594s

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DOI
10.1021/ie950594s

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Data completeness: 81%