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    Author(s): J.Y. Zhu; M. Subhosh Chandra; Roland GleisnerWilliam Gilles; Johnway Gao; Gevan Marrs; Dwight Anderson; John Sessions
    Date: 2015
    Source: Tappi Journal. 14(9): 577-583.
    Publication Series: Scientific Journal (JRNL)
    Station: Forest Products Laboratory
    PDF: View PDF  (524.0 KB)

    Description

    We examined two case studies to demonstrate the advantages of sulfite chemistry for pretreating underutilized woody biomass to produce sugars through enzymatic saccharification. In the first case study, we evaluated knot rejects from a magnesium-basedsulfite mill for direct enzymatic sugar production.We found that the sulfite mill rejects are an excellent feedstock for sugar production. In the second study, we presented SPORL (sulfite pretreatment to overcome the recalcitrance of lignocelluloses),a sulfite pretreatment process based on modified sulfite pulping for robust bioconversion of softwood forest residues. Sulfite pulping technology is well developed, with proven commercial scalability, and sulfite pretreatment is a strong contender for commercial adoption.

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Zhu, J.Y.; Chandra, M. Subhosh; Gleisner, Roland; Gilles, William; Gao, Johnway; Marrs, Gevan; Anderson, Dwight; Sessions, John. 2015. Case studies on sugar production from underutilized woody biomass using sulfite chemistry. Tappi Journal. 14(9): 577-583.

    Keywords

    Forest residues, ethanol, pretreatment, high solids, enzymatic saccharification and fermentation

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