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US 12,351,983 B2Granted
Pretreatment methods for cotton textile waste fabric
AssigneesNorth Carolina State University, Cotton Incorporated
InventorsMary Ann Ankeny, Matthew J. Farrell, Ronalds Gonzalez, Hasan Jameel
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Abstract
Disclosed is mechanical and decolorization pretreatment of cotton-containing textiles, such as “trash” feedstock in terms of end-of-life-cotton textiles, that may be used to produce sugar without the use of harsh pretreatments conditions.
Claims28
A method of pretreating cotton-containing textile material comprising refining the cotton-containing textile material in a PFI mill for between about 2,000 and 20,000 revolutions,
- wherein the method does not comprise a pretreatment step that requires neutralization from use of an acid or base, recovery of any solvent, or rinsing steps necessitated from a pretreatment that requires components to be removed before hydrolysis and/or fermentation.
A method of processing cotton-containing textile material comprising
- (a) shredding the cotton-containing textile material;
- (b) cutting the cotton-containing textile material;
- (c) milling the cotton-containing textile material;
- (d) refining the cotton-containing textile material in a PFI mill for between about 2,000 and 20,000 revolutions;
- and
- (e) subjecting the cotton-containing textile material to hydrolysis to produce a hydrolysate,
- wherein the method does not comprise a pretreatment step that requires neutralization from use of an acid or base, recovery of any solvent, or rinsing steps necessitated from a pretreatment that requires components to be removed before hydrolysis and/or fermentation.
4 more elements
Dependencies are inferred from the claim text.