Processing biomass
First Claim
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1. A mixture comprising:
- (a) a low molecular weight sugar,(b) a treated cellulosic or lignocellulosic material having a porosity of at least 35% and comprising a plurality of saccharide units arranged in a molecular chain, wherein from about 1 out of every 2 to about 1 out of every 250 saccharide units includes a carboxylic acid functional group,(c) water, and(d) a fermenting microorganism, whereinthe treated cellulosic or lignocellulosic material comprises a cellulosic or lignocellulosic material that has been irradiated with at least 5 Mrad of electron beam radiation, and the carboxylic acid functional groups act as bonding sites for the microorganism.
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Abstract
Biomass (e.g., plant biomass, animal biomass, and municipal waste biomass) is processed to produce useful products, such as fuels. For example, systems can use feedstock materials, such as cellulosic and/or lignocellulosic materials, to proceed ethanol and/or butanol, e.g., by fermentation.
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Citations
15 Claims
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1. A mixture comprising:
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(a) a low molecular weight sugar, (b) a treated cellulosic or lignocellulosic material having a porosity of at least 35% and comprising a plurality of saccharide units arranged in a molecular chain, wherein from about 1 out of every 2 to about 1 out of every 250 saccharide units includes a carboxylic acid functional group, (c) water, and (d) a fermenting microorganism, wherein the treated cellulosic or lignocellulosic material comprises a cellulosic or lignocellulosic material that has been irradiated with at least 5 Mrad of electron beam radiation, and the carboxylic acid functional groups act as bonding sites for the microorganism. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification