Use of fermentation residues as flow-enhancing agents in cementitious materials
AssigneeA.E. Staley Manufacturing Company
InventorsAndrew J. Hoffman, Michael D. Harrison
Life of this patent
Estimating the term…
Abstract
Herein is disclosed an admixture, for concrete, gypsum panels, and other cementitious products, derived from fermentation still bottoms. The admixture typically comprises protein, glycerol, and lactate, as well as smaller amounts of other alcohols, sugars, and other organic acids. The admixture may be present as a solution (typically comprising about 30-50 wt % solids) or as a dry mixture. The admixture allows increased flow and reduced water use in concrete and gypsum slurries used in gypsum panel production. Concrete, cement, and gypsum premixes, ready-mixes, and poured structures are disclosed.
Claims28
A composition, comprising:
- a cementitious material, and
- a fermentation residue, wherein the fermentation residue is a yeast ethanol fermentation residue and the fermentation residue comprises protein, glycerol, and at least one salt of an organic acid.
A method of preparing a composition comprising a cementitious material and a fermentation residue, wherein the fermentation residue is a yeast ethanol fermentation residue and the fermentation residue comprising protein, glycerol, and at least one salt of an organic acid, the method comprising:
- growing a yeast on a medium, to form at least a microorganism biomass, a fermentation residue, and at least one target product selected from the group consisting of ethanol and lysine;
- separating the fermentation residue from the microorganism biomass;
- and
- combining the fermentation residue with the cementitious material, to form the composition.
A method of producing a cementitious structure, comprising:
- combining at least a yeast ethanol fermentation residue, wherein the fermentation residue comprises protein, glycerol, and at least one salt of an organic acid;
- a cementitious material;
- and water, to yield a slurry;
- forming the slurry into an unset cementitious structure;
- and
- setting the unset cementitious structure, to yield the cementitious structure.
Dependencies are inferred from the claim text.