초록 ▼

In some embodiments, the present disclosure provides a method for producing biofuel from a feedstock that includes one or more coffee sources, such as green coffee beans, whole roasted coffee beans, ground coffee, or spent coffee grounds. Triglycerides and other materials, such as antioxidants, are

In some embodiments, the present disclosure provides a method for producing biofuel from a feedstock that includes one or more coffee sources, such as green coffee beans, whole roasted coffee beans, ground coffee, or spent coffee grounds. Triglycerides and other materials, such as antioxidants, are extracted from the coffee source. In some example, the triglycerides are then transesterified to produce a fatty acid ester biofuel product. In further examples, the method includes obtaining spent coffee grounds from one or more sources, such as residences or businesses that generate spent coffee grounds. The present disclosure also provides biofuels produced using the disclosed method, including mixtures of such biofuels with other fuels, such as other biofuels or petroleum based fuels. Materials obtained from the disclosed method may be put to other uses, such as cosmetics, medicinal products, food products, or combustible materials.

대표청구항 ▼

1. A method for producing a biofuel comprising: extracting triglycerides from spent roasted coffee grounds; and transesterifying the triglycerides. 2. The method of claim 1, wherein the transesterifying the triglycerides is performed using a lower alkyl alcohol. 3. The method of claim 1, wherein the

1. A method for producing a biofuel comprising: extracting triglycerides from spent roasted coffee grounds; and transesterifying the triglycerides. 2. The method of claim 1, wherein the transesterifying the triglycerides is performed using a lower alkyl alcohol. 3. The method of claim 1, wherein the transesterifying the triglycerides is performed using methanol. 4. The method of claim 1, wherein the triglycerides are extracted using an organic solvent. 5. The method of claim 1, wherein the fuel is stable for at least about 12 hours. 6. The method of claim 1, wherein the fuel is stable for at least about 24 hours. 7. The method of claim 1, wherein the fuel is stable for at least about 7 days. 8. The method of claim 1, wherein the fuel is stable for at least about 30 days. 9. The method of claim 1, wherein the fuel comprises at least about 5 wt % antioxidants. 10. The method of claim 1, wherein the triglycerides are extracted by dry distillation. 11. A biofuel mixture produced by mixing an amount of a fuel according to claim 1 with a second fuel. 12. The biofuel mixture of claim 11, wherein the mixture comprises at least about 5 wt % of the fuel according to claim 1. 13. The biofuel mixture of claim 11, wherein the mixture comprises at least about 10 wt % of the fuel according to claim 1. 14. The biofuel mixture of claim 11, wherein the second fuel comprises B20. 15. The biofuel mixture of claim 11, wherein the second fuel comprises a petroleum based fuel. 16. The biofuel mixture of claim 11, wherein the second fuel comprises diesel. 17. A biofuel produced according to the method of claim 1. 18. A method for producing a biofuel, comprising: roasting coffee beans to form roasted coffee beans; grinding the roasted coffee beans to form roasted coffee grounds; extracting the roasted coffee grounds with water to produce water extracted, spent roasted coffee grounds; extracting triglycerides from the water extracted, spent roasted coffee grounds; and transesterifying the triglycerides to produce the biofuel. 19. The method of claim 18 further comprising mixing the biofuel with a second fuel to produce a fuel mixture having a greater stability than the fuel, wherein the second fuel is a biodiesel fuel, a biodiesel fuel blend, or a petroleum fuel. 20. The method of claim 1, further comprising, prior to extracting triglycerides from spent roasted coffee grounds, obtaining the spent roasted coffee grounds from a plurality of sources; and transporting the spent roasted coffee grounds to a biofuel production facility. 21. The method of claim 20, wherein at least one of the plurality of sources is selected from a grocery store, a convenience store, a coffee shop, a business, a restaurant, and a residence.