Process for the production of organic products from diverse biomass sources
First Claim
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1. A method of processing a lignocellulose-containing biomass material, comprising:
- treating the biomass material by one or more stages of dilute acid hydrolysis with about 0.4% to 2% strong acid; and
treating an unreacted solid lignocellulostic component of the acid hydrolyzed biomass material by alkaline delignification to produce precursors for biodegradable thermoplastics and derivatives.
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Abstract
Disclosed are processes and systems for the production of useful organic product from diverse lignocellulose-containing biomass having increased yield and efficiency over existing processes. In particular, the present invention integrates dilute acid hydrolysis and alkaline delignification techniques in processes that enhance the efficiency and yiel of lignocellulostic biomass processing and enable the economic production lignin-based biodegradable plastics and other useful organic products.
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Citations
35 Claims
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1. A method of processing a lignocellulose-containing biomass material, comprising:
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treating the biomass material by one or more stages of dilute acid hydrolysis with about 0.4% to 2% strong acid; and
treating an unreacted solid lignocellulostic component of the acid hydrolyzed biomass material by alkaline delignification to produce precursors for biodegradable thermoplastics and derivatives. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 33, 34, 35)
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27. A method of processing a lignocellulose-containing biomass material, comprising:
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treating the biomass material by a first stage or dilute acid hydrolysis with about 0.4% strong acid;
treating lignin/cellulose solids produced by said first stage of dilute acid hydrolysis by a second stage of dilute acid hydrolysis with about 2% strong acid;
treating an unreacted lignocellulostic component of the acid hydrolyzed biomass material produced by the second acid hydrolysis stage by alkaline delignification;
treating at least one member selected from the group consisting of free five- and six-carbon sugars and oligosaccharides produced by said dilute acid hydrolysis stages by bacterial fermentation;
treating at least one of six-carbon sugars and oligosaccarides produced by said dilute acid hydrolysis stages and unreacted in said bacterial fermentation treatment by combined yeast fermentation and enzymatic hydrolysis (SSF); and
conducting separation and recovery of useful organic products intertwined with the treatment stages of said processing. - View Dependent Claims (28, 29, 30, 31)
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32. A method of processing a lignocellulose-containing biomass material, comprising:
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treating the biomass material by one or more stages of dilute acid hydrolysis with about 0.4% to 2% strong acid;
treating an unreacted lignocellulostic component of the acid hydrolyzed biomass material produced by the acid hydrolysis stage by alkaline delignification;
treating at least one of the unreacted polysaccharides and oligosaccharides produced by said dilute acid hydrolysis stage by enzymatic hydrolysis;
treating at least one member selected from the group consisting of free five- and six-carbon sugars, polysaccharides and oligosaccharides produced by said dilute acid hydrolysis and enzymatic hydrolysis stages by bacterial fermentation;
treating at least one of six-carbon sugars and oligosaccarides produced by said dilute acid hydrolysis and enzymatic hydrolysis stages by combined yeast fermentation combined yeast and enzymatic hydrolysis (SSF); and
conducting separation and recovery of useful organic products intertwined with the treatment stages of said processing.
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Specification