Process For Hydrolysis Of Wet Fiber And Method For Producing Fermentation Products From Wet Fiber
First Claim
1. A method for hydrolyzing wet fiber material comprising:
- providing a wet fiber material;
macerating the wet fiber material under acidic conditions to provide a slurry; and
shearing the slurry in the presence of steam.
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Accused Products
Abstract
Disclosed are a method of hydrolysis of wet fiber and a method for preparing ethanol. Generally, an agricultural plant material, such as corn hulls, distiller'"'"'s dried grains, or spent germ, is treated to at least partially hydrolyze the fiber. The process may include a maceration step followed by a shearing operation in the presence of steam to yield a treated product, in which, in many embodiments, saccharides will be released and unbound from fibrous portions of the agricultural product. In some embodiments, the process includes macerating the material to provide a slurry having a solids content of at least 10 percent and jet cooking the slurry. A mixture of saccharides prepared in this fashion may be fermented to yield ethanol and/or biochemicals.
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Citations
28 Claims
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1. A method for hydrolyzing wet fiber material comprising:
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providing a wet fiber material; macerating the wet fiber material under acidic conditions to provide a slurry; and shearing the slurry in the presence of steam. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for producing ethanol, the method comprising:
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inoculating a saccharide mixture with a microorganism capable of fermenting the saccharide mixture to produce ethanol; and fermenting the saccharide mixture to produce ethanol, said saccharide mixture having been prepared by; providing a wet fiber material; adding the wet fiber material to a dilute acid solution and macerating the wet fiber material to provide a slurry; shearing the slurry in the presence of steam to provide a broth that includes fermentable saccharides; and optionally recovering a saccharide fraction from the broth. - View Dependent Claims (20, 21, 22, 23)
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24. A method for producing a biochemical, the method comprising:
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inoculating a saccharide mixture with a microorganism capable of fermenting the saccharide mixture to produce a biochemical selected from the group consisting of succinic acid, malic acid, 3-hydroxy propionic acid, glucaric acid, sorbitol, xylitol, aspartic acid, glutamic acid, itaconic acid, glycerol, oxalic acid, and combinations thereof; fermenting the saccharide mixture to produce the biochemical, said saccharide mixture having been prepared by; providing a wet fiber material; adding the wet fiber material to a dilute acid solution and macerating the wet fiber material to provide a slurry; shearing the slurry in the presence of steam to provide a broth that includes fermentable saccharides; and optionally recovering a saccharide fraction from the broth. - View Dependent Claims (25, 26, 27, 28)
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Specification