CA2615904A1 - Methods of biomass pretreatment - Google Patents
Methods of biomass pretreatment Download PDFInfo
- Publication number
- CA2615904A1 CA2615904A1 CA002615904A CA2615904A CA2615904A1 CA 2615904 A1 CA2615904 A1 CA 2615904A1 CA 002615904 A CA002615904 A CA 002615904A CA 2615904 A CA2615904 A CA 2615904A CA 2615904 A1 CA2615904 A1 CA 2615904A1
- Authority
- CA
- Canada
- Prior art keywords
- mixture
- biomass
- grams
- temperature
- lignocellulose
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P2201/00—Pretreatment of cellulosic or lignocellulosic material for subsequent enzymatic treatment or hydrolysis
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- Processing Of Solid Wastes (AREA)
- Paper (AREA)
Abstract
The invention is directed to methods for the pretreatment of a lignocellulose-containing biomass. Pretreatment comprises the addition of calcium hydroxide and water to the biomass to form a mixture, and subjecting the mixture to relatively high temperatures for a period of time sufficient to render the biomass amenable to digestion. The pretreated biomass is digested to produce useful products such as feedstocks, fuels, and compounds including fatty acids, sugars, ketones and alcohols. Alternatively, the pretreatment process includes the addition of an oxidizing agent, selected from the group consisting of oxygen and oxygen-containing gasses, to the mixture under pressure. The invention is also directed to a method for the recovery of calcium from the pretreated biomass.
Claims (41)
1. A method for pretreating a lignocellulose-containing biomass to render the biomass amenable to digestion comprising:
a) providing the lignocellulose-containing biomass, b) adding calcium hydroxide and water to the biomass to form a mixture;
c) adding an oxidizing agent, selected from the group consisting of oxygen and oxygen-containing gasses, to the mixture under pressure; and d) maintaining the mixture at an elevated temperature and for a period of time sufficient to render the biomass of the mixture amenable to digestion.
a) providing the lignocellulose-containing biomass, b) adding calcium hydroxide and water to the biomass to form a mixture;
c) adding an oxidizing agent, selected from the group consisting of oxygen and oxygen-containing gasses, to the mixture under pressure; and d) maintaining the mixture at an elevated temperature and for a period of time sufficient to render the biomass of the mixture amenable to digestion.
2. The method of claim 1 wherein the lignocellulose-containing biomass contains greater than 20% lignin.
3. The method of claim 1 wherein the oxidizing agent is added to the mixture at a pressure of between about 20 to about 500 psig.
4. The method of claim 1 wherein the oxidizing agent is added to the mixture at a pressure of about 100 psig.
5. The method of claim 1 wherein the mixture contains between about 6 to about 19 grams of water per gram of dry biomass.
6. The method of claim 1 wherein the mixture contains about 16 grams of water per gram of dry biomass.
7. The method of claim 1 wherein the mixture contains between about 2 to about 30 grams of calcium hydroxide per 100 grams of dry biomass.
8. The method of claim 1 wherein the mixture contains about 30 grams of calcium hydroxide per 100 grams of dry biomass.
9. The method of claim 1 wherein the lignocellulose-containing biomass is grass, wood, bagasse, straw, paper or plant material, and combinations thereof.
10. The method of claim 1 wherein the mixture is maintained at the temperature of between about 40°C to about 150°C.
11. The method of claim 1 wherein the mixture is maintained at the temperature of between about 100°C and about 140°C.
12. The method of claim 1 wherein the mixture is maintained at the temperature of about 120°C.
13. The method of claim 1 wherein the period of time is between about 1 and about 36 hours.
14. The method of claim 1 wherein the period of time is about 3 hours.
15. The method of claim 1 wherein the mixture is maintained at a temperature of about 120°C, for about 3 hours, and the oxidizing agent pressure is about 100 psig.
16. A method for converting a lignocellulose-containing biomass into a useful product comprising:
a) providing the lignocellulose-containing biomass;
b) adding calcium hydroxide and water to the biomass to form a mixture;
c) adding an oxidizing agent, selected from the group consisting of oxygen and oxygen-containing gasses, to the mixture under pressure;
d) maintaining the oxidized mixture at a temperature and for a period of time sufficient to render the biomass of the mixture amenable to digestion;
and e) digesting the pretreated biomass of the mixture to convert the biomass into the useful product.
a) providing the lignocellulose-containing biomass;
b) adding calcium hydroxide and water to the biomass to form a mixture;
c) adding an oxidizing agent, selected from the group consisting of oxygen and oxygen-containing gasses, to the mixture under pressure;
d) maintaining the oxidized mixture at a temperature and for a period of time sufficient to render the biomass of the mixture amenable to digestion;
and e) digesting the pretreated biomass of the mixture to convert the biomass into the useful product.
17. The method of claim 16 wherein the biomass is digested by acid hydrolysis, enzymatic action, fermentation, or a combination thereof.
18. A useful product made by the method of claim 16.
19. The useful product of claim 18 which comprises a chemical feedstock.
20. The useful product of claim 18 which comprises a fuel.
21. The useful product of claim 18 which comprises an alcohol, an organic acid, a sugar, a ketone, a fatty acid, or a combination thereof.
22. A method for pretreating a lignocellulose-containing biomass to render the biomass amenable to digestion comprising:
a) providing the lignocellulose-containing biomass;
b) adding calcium hydroxide and water to the biomass to form a mixture; and c) maintaining the mixture at a temperature and for a period of time sufficient to render the biomass of the mixture amenable to digestion.
a) providing the lignocellulose-containing biomass;
b) adding calcium hydroxide and water to the biomass to form a mixture; and c) maintaining the mixture at a temperature and for a period of time sufficient to render the biomass of the mixture amenable to digestion.
23. The method of claim 22 wherein the mixture contains between about 6 and about 19 grams of water per gram of dry biomass.
24. The method of claim 22 wherein the mixture contains between about 9 and about 11 grams of water per gram of dry biomass.
25. The method of claim 22 wherein the mixture contains between about 2 and about 30 grams of calcium hydroxide per 100 grams of dry biomass.
26. The method of claim 22 wherein the mixture contains between about 10 and about 15 grams of calcium hydroxide per 100 grams of dry biomass.
27. The method of claim 22 wherein the lignocellulose-containing biomass is grass, wood, bagasse, straw, paper or plant material, and combinations thereof.
28. The method of claim 22 wherein the mixture is maintained at the temperature of between about 40°C and about 150°C.
29. The method of claim 22 wherein the mixture is maintained at the temperature of between about 40°C and about 70°C.
30. The method of claim 22 wherein the mixture is maintained at the temperature of between about 70°C and about 110°C.
31. The method of claim 22 wherein the mixture is maintained at the temperature of between about 110°C and about 150°C.
32. The method of claim 22 wherein the period of time is between about 1 and about 36 hours.
33. The method of claim 22 wherein the period of time is between about 15 and about 25 hours.
34. The method of claim 22 wherein the period of time is between about 1 and about 2 hours.
35. The method of claim 22 wherein the mixture is maintained at a temperature of between about 40°C and about 150°C, and the period of time is between about 1 and about 36 hours.
36. A method for converting a lignocellulose-containing biomass into a useful product comprising:
a) providing a lignocellulose-containing biomass;
b) adding calcium hydroxide and water to the biomass to form a mixture;
c) maintaining the mixture at a temperature and for a period of time sufficient to render the biomass of the mixture amenable to digestion; and d) digesting the biomass of the mixture to convert the biomass into the useful product.
a) providing a lignocellulose-containing biomass;
b) adding calcium hydroxide and water to the biomass to form a mixture;
c) maintaining the mixture at a temperature and for a period of time sufficient to render the biomass of the mixture amenable to digestion; and d) digesting the biomass of the mixture to convert the biomass into the useful product.
37. The method of claim 36 wherein the biomass is digested by acid hydrolysis, enzymatic action, fermentation, or a combination thereof.
38. A useful product made by the method of claim 36.
39. The useful product of claim 38 which comprises a chemical feedstock.
40. The useful product of claim 38 which comprises a fuel.
41. The useful product of claim 38 which comprises an alcohol, an organic acid, a sugar, a ketone, a fatty acid, or a combination thereof.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US92673992A | 1992-08-06 | 1992-08-06 | |
| US08/096,972 US5865898A (en) | 1992-08-06 | 1993-07-27 | Methods of biomass pretreatment |
| US08/096,972 | 1993-07-27 | ||
| US07/926,739 | 1993-07-27 | ||
| CA002141794A CA2141794C (en) | 1992-08-06 | 1993-08-06 | Methods of biomass pretreatment |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002141794A Division CA2141794C (en) | 1992-08-06 | 1993-08-06 | Methods of biomass pretreatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2615904A1 true CA2615904A1 (en) | 1994-02-17 |
| CA2615904C CA2615904C (en) | 2011-09-27 |
Family
ID=39315324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2615904A Expired - Lifetime CA2615904C (en) | 1992-08-06 | 1993-08-06 | Methods of biomass pretreatment |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2615904C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8123864B2 (en) | 2005-07-19 | 2012-02-28 | Inbicon A/S | Method and apparatus for conversion of cellulosic material to ethanol |
| US10612059B2 (en) | 2015-04-10 | 2020-04-07 | Comet Biorefining Inc. | Methods and compositions for the treatment of cellulosic biomass and products produced thereby |
| US10633461B2 (en) | 2018-05-10 | 2020-04-28 | Comet Biorefining Inc. | Compositions comprising glucose and hemicellulose and their use |
| CN111903842A (en) * | 2020-07-24 | 2020-11-10 | 华南农业大学 | Preparation method of sea-buckthorn branch feed |
| CN113860492A (en) * | 2021-11-12 | 2021-12-31 | 桂林理工大学 | Carbon release amount regulation method of denitrifying wood carbon source based on reducing sugar yield, wood carbon source and application |
| CN114875105A (en) * | 2022-03-09 | 2022-08-09 | 益水源生物技术(西安)有限公司 | Biomass-based efficient carbon source and preparation method thereof |
-
1993
- 1993-08-06 CA CA2615904A patent/CA2615904C/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8123864B2 (en) | 2005-07-19 | 2012-02-28 | Inbicon A/S | Method and apparatus for conversion of cellulosic material to ethanol |
| US9284383B2 (en) | 2005-07-19 | 2016-03-15 | Inbicon A/S | Method and apparatus for conversion of cellulosic material to ethanol |
| US10155966B2 (en) | 2005-07-19 | 2018-12-18 | Inbicon A/S | Method and apparatus for conversion of cellulosic material to ethanol |
| US10612059B2 (en) | 2015-04-10 | 2020-04-07 | Comet Biorefining Inc. | Methods and compositions for the treatment of cellulosic biomass and products produced thereby |
| US11692211B2 (en) | 2015-04-10 | 2023-07-04 | Comet Biorefining Inc. | Methods and compositions for the treatment of cellulosic biomass and products produced thereby |
| US10633461B2 (en) | 2018-05-10 | 2020-04-28 | Comet Biorefining Inc. | Compositions comprising glucose and hemicellulose and their use |
| US11525016B2 (en) | 2018-05-10 | 2022-12-13 | Comet Biorefining Inc. | Compositions comprising glucose and hemicellulose and their use |
| CN111903842A (en) * | 2020-07-24 | 2020-11-10 | 华南农业大学 | Preparation method of sea-buckthorn branch feed |
| CN111903842B (en) * | 2020-07-24 | 2023-01-13 | 华南农业大学 | Preparation method of sea-buckthorn branch feed |
| CN113860492A (en) * | 2021-11-12 | 2021-12-31 | 桂林理工大学 | Carbon release amount regulation method of denitrifying wood carbon source based on reducing sugar yield, wood carbon source and application |
| CN113860492B (en) * | 2021-11-12 | 2023-02-03 | 桂林理工大学 | Carbon release amount regulation method of denitrifying wood carbon source based on reducing sugar yield, wood carbon source and application |
| CN114875105A (en) * | 2022-03-09 | 2022-08-09 | 益水源生物技术(西安)有限公司 | Biomass-based efficient carbon source and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2615904C (en) | 2011-09-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |