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US 2014/0227757 A1Published application
Integrated processes for conversion of lignocellulosic biomass to bioproducts and systems and apparatus related thereto
AssigneeBoard of Trustees of Michigan State University
InventorsMingjie Jin, Venkatesh Balan, Bruce E. Dale
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Abstract
An integrated biological process for cellulosic bioproduct production is provided, which, in one embodiment, results in high ethanol productivity, enzyme recycling and reuse of yeast cells. The integrated process can be an integrated separate hydrolysis and fermentation (SHF) process or an integrated fast simultaneous saccharification and co-fermentation (FSSCF) process. The methods described herein can result in high bioproduct productivity through enzyme recycling and reuse of yeast cells.
Claims22
A method comprising:
- performing a first hydrolyzing cycle on lignocellulosic biomass containing an easily digestible portion and a non-easily digestible portion, to produce a slurry containing digested solids and unhydrolyzed solids, respectively;
- and
- producing a solids residue and a liquid coproduct from the slurry.
A system comprising:
- a first vessel for performing a first hydrolyzing cycle on lignocellulosic biomass containing an easily digestible portion and a non-easily digestible portion to produce a slurry containing digested solids and unhydrolyzed solids, respectively;
- and
- a second vessel for producing solids residue and a liquid coproduct from the slurry;
- and
- a bioproduct production facility connected to the integrated hydrolysis system and configured to perform either separate hydrolysis and fermentation (SHF) or simultaneous saccharification and co-fermentation (SSCF).
2 more elements
An apparatus comprising:
- integrated hydrolysis equipment configured to perform a first hydrolyzing cycle on lignocellulosic biomass containing an easily digestible portion and a non-easily digestible portion to produce a slurry containing digested solids and unhydrolyzed solids, respectively, wherein the equipment is further configured to perform a production step, in which solids residue and a liquid coproduct are produced from the slurry, and a recycling step, in which the solids are recycled through a second hydrolyzing cycle, wherein an amount of the undigested solids in the solids residue is converted to digested solids.
Dependencies are inferred from the claim text.