METHODS OF HYDROLYZING PRETREATED DENSIFIED BIOMASS PARTICULATES AND SYSTEMS RELATED THERETO
First Claim
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1. A method comprising:
- enzymatically hydrolyzing one or more hydrolysable densified biomass particulates produce a convertible sugar-containing stream, wherein said densified biomass particulates are produced by;
subjecting a quantity of plant biomass fibers containing lignin and/or hemicellulose to a pretreatment to cause at least a portion of lignin and/or hemicellulose to move to an outer surface of said fiber to produce a quantity of pretreated tacky plant biomass fibers; and
densifying the quantity of pretreated tacky plant biomass fibers to produce the one or more hydrolysable densified biomass particulates wherein said biomass fibers is densified without using added binder.
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Abstract
A method is provided in which pretreated and densified cellulosic biomass particulates can be hydrolyzed at a high solids loading rate as compared with the solids loading rate of loose hydrolysable cellulosic biomass fibers. The resulting high concentration sugar-containing stream can be easily converted to biofuels or to an entire suite of other useful bioproducts.
3 Citations
24 Claims
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1. A method comprising:
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enzymatically hydrolyzing one or more hydrolysable densified biomass particulates produce a convertible sugar-containing stream, wherein said densified biomass particulates are produced by; subjecting a quantity of plant biomass fibers containing lignin and/or hemicellulose to a pretreatment to cause at least a portion of lignin and/or hemicellulose to move to an outer surface of said fiber to produce a quantity of pretreated tacky plant biomass fibers; and densifying the quantity of pretreated tacky plant biomass fibers to produce the one or more hydrolysable densified biomass particulates wherein said biomass fibers is densified without using added binder. - View Dependent Claims (2, 4, 6, 7, 8, 9, 10, 11, 12, 21, 22)
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3. (canceled)
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5. (canceled)
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13. A system comprising,
a hydrolyzing facility for enzymatically hydrolyzing one or more hydrolysable densified biomass particulates to produce a convertible sugar-containing stream, wherein said densified biomass particulates are produced by: -
subjecting a quantity of plant biomass fibers to a pretreatment to cause at least a portion of lignin and/or hemicellulose contained within each fiber to move to an outer surface of said fiber to produce a quantity of pretreated tacky plant biomass fibers; and densifying the quantity of pretreated tacky plant biomass fibers to produce the one or more hydrolysable densified biomass particulates wherein said biomass fibers is densified without using added binder. - View Dependent Claims (14, 15, 17, 18, 19, 20)
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16. (canceled)
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23. A method comprising:
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subjecting a quantity of plant biomass fibers containing lignin and/or hemicellulose to a pretreatment to cause at least a portion of lignin and/or hemicellulose to move to an outer surface of said fiber to produce a quantity of pretreated tacky plant biomass fibers; densifying the quantity of pretreated tacky plant biomass fibers to produce the one or more hydrolysable densified biomass particulates wherein said biomass fibers is densified without using added binder; and enzymatically hydrolyzing one or more hydrolysable densified biomass particulates to produce a convertible sugar-containing stream, wherein, the subjecting, densifying and enzymatically hydrolyzing steps are performed as an integrated process at a single location.
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24. A method comprising:
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providing a hydrolysable densified biomass particulate or a plurality thereof, the hydrolysable densified biomass particulate comprising a plurality of plant biomass fibers containing lignin and/or hemicellulose at an outer surface of the fibers, wherein the hydrolysable densified biomass particulate is in a compressed particulate form and is free from added binder; and hydrolyzing the hydrolysable densified biomass particulate or plurality thereof to produce a convertible sugar-containing stream.
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Specification