WO1994029475A1 - Masse cellulaire provenant de cuves de fermentation et utilisee comme source de nutrition dans la conversion de biomasse en ethanol - Google Patents
Masse cellulaire provenant de cuves de fermentation et utilisee comme source de nutrition dans la conversion de biomasse en ethanol Download PDFInfo
- Publication number
- WO1994029475A1 WO1994029475A1 PCT/US1994/006518 US9406518W WO9429475A1 WO 1994029475 A1 WO1994029475 A1 WO 1994029475A1 US 9406518 W US9406518 W US 9406518W WO 9429475 A1 WO9429475 A1 WO 9429475A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ethanol
- cell mass
- biomass
- carbohydrate material
- fermenters
- Prior art date
Links
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N EtOH Substances CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 235000015097 nutrients Nutrition 0.000 title claims abstract description 23
- 238000006243 chemical reaction Methods 0.000 title description 8
- 238000000034 method Methods 0.000 claims abstract description 36
- 230000008569 process Effects 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 22
- 238000000855 fermentation Methods 0.000 claims abstract description 21
- 230000004151 fermentation Effects 0.000 claims abstract description 21
- 150000001720 carbohydrates Chemical class 0.000 claims abstract description 17
- 244000005700 microbiome Species 0.000 claims abstract description 17
- 238000004821 distillation Methods 0.000 claims abstract description 13
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims abstract description 11
- 239000008103 glucose Substances 0.000 claims abstract description 11
- 238000004064 recycling Methods 0.000 claims abstract description 11
- 239000002028 Biomass Substances 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 claims abstract description 7
- 239000002904 solvent Substances 0.000 claims abstract description 6
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 5
- 239000012528 membrane Substances 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 240000004808 Saccharomyces cerevisiae Species 0.000 claims description 9
- 235000014680 Saccharomyces cerevisiae Nutrition 0.000 claims description 8
- 241000894006 Bacteria Species 0.000 claims description 4
- 239000006227 byproduct Substances 0.000 claims description 4
- 239000002699 waste material Substances 0.000 claims description 4
- 244000027711 Brettanomyces bruxellensis Species 0.000 claims description 3
- 235000000287 Brettanomyces bruxellensis Nutrition 0.000 claims description 3
- 241000193448 Ruminiclostridium thermocellum Species 0.000 claims description 3
- 241000186337 Thermoanaerobacter ethanolicus Species 0.000 claims description 3
- 230000002255 enzymatic effect Effects 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 241000233866 Fungi Species 0.000 claims description 2
- 239000010813 municipal solid waste Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 241000588902 Zymomonas mobilis Species 0.000 claims 2
- 238000009996 mechanical pre-treatment Methods 0.000 claims 1
- 238000001704 evaporation Methods 0.000 abstract description 3
- 235000010633 broth Nutrition 0.000 description 11
- 235000014633 carbohydrates Nutrition 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000000047 product Substances 0.000 description 5
- 102000004190 Enzymes Human genes 0.000 description 4
- 108090000790 Enzymes Proteins 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000010261 cell growth Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 150000001413 amino acids Chemical class 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000000050 nutritive effect Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 235000000346 sugar Nutrition 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 239000007857 degradation product Substances 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 150000008163 sugars Chemical class 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 239000011573 trace mineral Substances 0.000 description 2
- 235000013619 trace mineral Nutrition 0.000 description 2
- 235000013343 vitamin Nutrition 0.000 description 2
- 239000011782 vitamin Substances 0.000 description 2
- 229940088594 vitamin Drugs 0.000 description 2
- 229930003231 vitamin Natural products 0.000 description 2
- 102000013142 Amylases Human genes 0.000 description 1
- 108010065511 Amylases Proteins 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003833 cell viability Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 235000015872 dietary supplement Nutrition 0.000 description 1
- 230000007515 enzymatic degradation Effects 0.000 description 1
- 238000000895 extractive distillation Methods 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 150000003212 purines Chemical class 0.000 description 1
- 150000003230 pyrimidines Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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
- C12P7/00—Preparation of oxygen-containing organic compounds
- C12P7/02—Preparation of oxygen-containing organic compounds containing a hydroxy group
- C12P7/04—Preparation of oxygen-containing organic compounds containing a hydroxy group acyclic
- C12P7/06—Ethanol, i.e. non-beverage
- C12P7/08—Ethanol, i.e. non-beverage produced as by-product or from waste or cellulosic material substrate
- C12P7/10—Ethanol, i.e. non-beverage produced as by-product or from waste or cellulosic material substrate substrate containing cellulosic material
-
- 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
- C12P7/00—Preparation of oxygen-containing organic compounds
- C12P7/02—Preparation of oxygen-containing organic compounds containing a hydroxy group
- C12P7/04—Preparation of oxygen-containing organic compounds containing a hydroxy group acyclic
- C12P7/06—Ethanol, i.e. non-beverage
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
Definitions
- the present invention relates generally to introducing cell mass from fermenters as a source of nutrients in biomass-to-ethanol conversion processes. Specifically, the present invention relates to a process for recycling part or all of the effluent stream of fermenters, including distillation residues back to the fermenters to serve as a source of nutrients for the needs of fermentative organisms in biomass-to-ethanol conversion processes; wherein nutrients present in the cell mass and in the surrounding solution retain their nutritive value and can be taken up by the ethanol-producing organisms for cell growth and product formation purposes.
- the design format of the fermenter is such that, various nutrients including carbon, nitrogen, sulfur, magnesium, and phosphorous sources, vitamins, cofactors, amino acids, and trace elements are provided exogenously to support cell growth and propagation with concomitant formation of ethanol.
- these nutrients become incorporated in the cell mass and are discarded at the end of the conventional process.
- the continuous addition of fresh nutrients to the fermenters increases the operating expenses of the biomass conversion process and contributes significantly to the final cost of the product, ethanol.
- U.S. Patent 4,436,814 discloses recovery of enzymes used for the production of fermentation alcohol.
- the enzyme contained in wash water after solids separation is led back into the first enzymatic degradation stage simultaneously with a portion of the slop coining from the distillation.
- streams from the enzymatic treatment tanks and the distillation column contain active amylase enzymes, that are recycled to the front end of the process in order to minimize enzyme supplementation cost.
- U.S. Patent 4,497,896 A process for fermentation of glucose with recycle of non-fermented components is disclosed in U.S. Patent 4,497,896.
- this patent there is disclosed, in particular, glucose fermentation where at least a part of the distillation residue is recycled as part of the feedstock slurry of starch and acid to a hydrolyzer to allow unfermented feedstock to be hydrolyzed to a fermentable glucose-containing fluid.
- a portion of the distillation residue of a starch-to-ethanol plant, which contains carbohydrates, is recycled to the front end of the process in order to hydrolyze the unconverted carbohydrate.
- Patent 4,578,353 is also directed to fermentation of glucose with recycle of non-fermented components, wherein at least part of the distillation residue is recycled as part of the feedstock slurry of starch and acid to a hydrolyzer to permit unfermented feedstock to be hydrolyzed to a fermentable glucose- containing fluid.
- a process for alcohol recovery by continuous fermentation is disclosed in U.S. Patent 5,036,005, and represents a system that involves the recycling of solvent used in an extraction process. More specifically, this is an extractive distillation followed by vacuum stripping (for solvent regeneration) in order to reduce energy requirements for production of ethanol by continuous fermentation.
- U.S. Patent 5,110,319 discloses a process for extracting ethanol from fermentation broths for direct blending into gasoline while preserving cell viability broth for recycling.
- a solvent that is not toxic to cell mass is used to extract ethanol from the fermentation broth.
- the solvent-ethanol mixture is blended with gasoline, whereas the cells in the broth are returned to the fermenter to enrich the feedstream.
- one object of the present invention is to provide a process that introduces the recycling of part or all of the effluent streams of fermenters back to the fermenters to serve as a source of nutrients for the needs of the fermentative organisms in a biomass-to-ethanol process.
- Another object of the invention is to provide a method for introducing the recycling of part or all of the effluent streams of fermenters, including the distillation residues, back to the fermenters to serve as a source of nutrients for the needs of the fermentative organisms in a biomass-to-ethanol process.
- a yet further object of the present invention is to provide a process for introducing the recycling of part or all of the effluent stream of fermenters back to the fermenters to serve as a source of nutrients for the fermentative organisms, so that nutrients present in the cell mass and in the surrounding solution retain their nutritive value and will be taken up by the ethanol-producing organisms for cell growth and product formation purposes.
- a still further object of the present invention is to provide an improved method for a process of converting hgnocellulosic biomass-to-ethanol, which minimizes exogenous addition of nutrients to the fermenters of the process, wherein recycling the cell mass present in the effluent of the fermenters back to the fermenters is utilized.
- a yet further object of the present invention is to provide a reduction of nutrient cost and the volume of process effluents that require waste treatment in a biomass-to-ethanol process by recycling not only the unfermented substrate, but also the attendant nutrients such as carbon, nitrogen, sulfur, magnesium and phosphorous sources, as well as vitamins, cofactors, amino acids, and trace elements.
- Microorganisms useful in the fermentation of the process of the invention are those that are substantially resistant to contamination and capable of withstanding wide variations in pH. By the use of such microorganisms, their tolerance will prevent contamination by other microorganisms in the fermentation broth, and such microorganisms are easily and quickly cultured.
- microorganisms may be utilized in the fermentation; however, the microorganisms most commonly used are the yeasts Saccharomyces cerevisiae and Brettanomyces custersii and the bacteria Zymomonis mobilis, Clostridium thermocellum, and Thermoanaerobacter ethanolicus. Numerous strains of S. cerevisiae are available and these numerous strains differ in the amount of ethanol they can tolerate, the rate of fermentation achievable by each, and the type of saccharides they are capable of fermenting.
- Suitable microorganisms will grow adequately on a variety of amino acids, amines, purines and pyrimidines as sources of nitrogen. Moreover, some natural sources of biomass may have adequate quantities of these nutrients to meet the growth requirements of the microorganisms.
- Saccharomyces cerevisiae is the yeast of choice, as its tolerance to wide ranges of pH will eliminate contamination of microorganisms from the fermentation broth. Further, this type of yeast is very easily and quickly cultured.
- the biomass starting material for the process of the present invention may be a carbohydrate material, a chemically modified carbohydrate material, a derivative carbohydrate material or mixtures thereof.
- These materials will include, but are not limited to cellulose and hemicellulose containing materials, such as energy crops, forestry residues, agricultural residues, municipal solid waste (including waste paper), pulp and paper industry wastes and by-products, and starch-to-ethanol industry water and by-products or combinations.
- Glucose is produced from the carbohydrate material by enzymatic, chemical, physical, mechanical
- hydrolysis treatment
- the hydrolysis fluid in addition to glucose may contain other monomeric and oligomeric sugars.
- This fluid is led to the fermentation vessels for sugar conversion to ethanol by ethanologenic microorganisms.
- Ethanol is recovered from the fermenter effluents using distillation or extractive methods with the help of appropriate solvents and/or membrane systems. Part of the fermenter effluent prior to or after ethanol recovery (including distillation) is recycled back to the fermenters to serve as a source of nutrients for the needs of the fermentative organisms. This has been highly beneficial, as the nutrients present in the cell mass and in the surrounding solution of the carbohydrate material retain their nutritive value and are taken up by the ethanol-producing organisms for cell growth and product formation purposes.
- the ethanol concentrations in the fermentor will be kept below about 15%, and preferably between around 4 to about 9% so that inhibition of the yeast or other ethanologenic organism is avoided.
- the ethanol containing broth may be continuously removed from the fermentator in order to keep low concentrations of ethanol in the fermentator.
- the apparatus for carrying out the invention will include a standard fermenter or cascade of fermentors in series or parallel operating in batch, fed-batch or continuous mode, which receives fermentation broth that includes a carbon source and microorganisms which are maintained at conventional fermentation temperatures in the production of ethanol from nutrient broths and microorganisms.
- the broth will be a water solution of glucose, other monomeric and oligomeric sugars, enzymes, unconverted polymeric carbohydrates and their derivatives and degradation products, lignin, and its derivatives and degradation products, nutrients, metabolic products including ethanol and cells of the fermentative microorganism.
- the broth containing ethanol is led to a distillation column where ethanol is removed by evaporation, or to an extraction column for solvent extraction and then removal by evaporation or ethanol is recovered using membranes.
Abstract
Le procédé amélioré de conversion de biomasse lignocellulosique en éthanol consiste à utiliser un matériau de biomasse sélectionné dans le groupe comprenant un matériau d'hydrate de carbone non modifié, un matériau d'hydrate de carbone modifié chimiquement, un matériau d'hydrate de carbonne dérivé et des mélanges de ceux-ci, à traiter ce matériau par voie enzymatique, chimique, physique ou mécanique afin de produire un fluide contenant du glucose, à traiter le fluide contenant du glucose dans une cuve de fermentation avec un micro-organisme de fermentation à des températures comprises entre 20 °C environ et 50 °C environ et dans des plages de pH allant de 3,0 environ à 7,0 environ, à séparer la masse cellulaire dudit matériau et les solutions entourant ladite masse cellulaire desdits matériaux et à recycler la masse cellulaire et les solutions entourant la masse cellulaire vers la cuve de fermentation pour obtenir une source de substances nutritives pour l'organisme de fermentation, à extraire le méthanol du bouillon de fermentation par distillation ou à l'aide d'un agent d'extraction ou à l'aide de membranes, et à évaporer l'éthanol du bouillon de fermentation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US7437493A | 1993-06-11 | 1993-06-11 | |
| US074,374 | 1993-06-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1994029475A1 true WO1994029475A1 (fr) | 1994-12-22 |
Family
ID=22119209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1994/006518 WO1994029475A1 (fr) | 1993-06-11 | 1994-06-10 | Masse cellulaire provenant de cuves de fermentation et utilisee comme source de nutrition dans la conversion de biomasse en ethanol |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO1994029475A1 (fr) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004015146A1 (fr) * | 2002-08-05 | 2004-02-19 | Ciba Specialty Chemicals Water Treatments Limited | Production d'un produit de fermentation |
| WO2004015145A1 (fr) * | 2002-08-05 | 2004-02-19 | Ciba Specialty Chemicals Water Treatments Limited | Production d'un produit de fermentation |
| WO2008072184A1 (fr) * | 2006-12-11 | 2008-06-19 | Volkmar Passoth | Cultures de fermentation et procédés les utilisant |
| WO2010080434A1 (fr) * | 2008-12-19 | 2010-07-15 | E. I. Du Pont De Nemours And Company | Prétraitement par solvant organique d'une biomasse pour augmenter la saccharification enzymatique |
| WO2011086244A2 (fr) | 2009-12-23 | 2011-07-21 | IFP Energies Nouvelles | Procede de production d'alcools et/ou de solvants a partir de pulpes papetieres avec recyclage du vegetal non hydrolyse dans un reacteur de regeneration |
| WO2011086245A2 (fr) | 2009-12-23 | 2011-07-21 | IFP Energies Nouvelles | Procédé de production d'alcools et/ou de solvants à partir de pulpes papetières avec recyclage du végétal non hydrolysé |
| US9034620B2 (en) | 2010-03-19 | 2015-05-19 | Poet Research, Inc. | System for the treatment of biomass to facilitate the production of ethanol |
| US9663807B2 (en) | 2011-01-18 | 2017-05-30 | Poet Research, Inc. | Systems and methods for hydrolysis of biomass |
| US9982317B2 (en) | 2011-07-07 | 2018-05-29 | Poet Research, Inc. | Systems and methods for acid recycle |
| US10533203B2 (en) | 2010-03-19 | 2020-01-14 | Poet Research, Inc. | System for the treatment of biomass |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2586706A1 (fr) * | 1985-08-28 | 1987-03-06 | Santa Lydia Usina | Procede de dessiccation de la bagasse de canne a sucre comprenant l'inoculation de microorganismes |
| US4952504A (en) * | 1987-07-28 | 1990-08-28 | Pavilon Stanley J | Method for producing ethanol from biomass |
| WO1993005186A1 (fr) * | 1991-09-11 | 1993-03-18 | Easter James M Iii | Procede de degradation de dechets urbains et de fabrication d'alcool combustible |
-
1994
- 1994-06-10 WO PCT/US1994/006518 patent/WO1994029475A1/fr unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2586706A1 (fr) * | 1985-08-28 | 1987-03-06 | Santa Lydia Usina | Procede de dessiccation de la bagasse de canne a sucre comprenant l'inoculation de microorganismes |
| US4952504A (en) * | 1987-07-28 | 1990-08-28 | Pavilon Stanley J | Method for producing ethanol from biomass |
| WO1993005186A1 (fr) * | 1991-09-11 | 1993-03-18 | Easter James M Iii | Procede de degradation de dechets urbains et de fabrication d'alcool combustible |
Non-Patent Citations (1)
| Title |
|---|
| I.S. CHUNG & Y.Y. LEE: "Ethanol fermentation of crude acid hydrolyzate of cellulose using high level yeast inocula.", BIOTECHNOLOGY AND BIOENGINEERING., vol. 27, no. 3, March 1985 (1985-03-01), NEW YORK US, pages 308 - 315 * |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8030040B2 (en) * | 2002-08-05 | 2011-10-04 | Ciba Specialty Chemicals Water Treatments Ltd. | Production of a fermentation product |
| WO2004015145A1 (fr) * | 2002-08-05 | 2004-02-19 | Ciba Specialty Chemicals Water Treatments Limited | Production d'un produit de fermentation |
| CN100352945C (zh) * | 2002-08-05 | 2007-12-05 | 西巴特殊化学水处理有限公司 | 发酵产品的生产 |
| WO2004015146A1 (fr) * | 2002-08-05 | 2004-02-19 | Ciba Specialty Chemicals Water Treatments Limited | Production d'un produit de fermentation |
| US7455997B2 (en) | 2002-08-05 | 2008-11-25 | Ciba Specialty Chemicals Water Treatments Ltd | Production of fermentation product |
| WO2008072184A1 (fr) * | 2006-12-11 | 2008-06-19 | Volkmar Passoth | Cultures de fermentation et procédés les utilisant |
| US8389253B2 (en) | 2008-12-19 | 2013-03-05 | E I Du Pont De Nemours And Company | Organic solvent pretreatment of biomass to enhance enzymatic saccharification |
| WO2010080434A1 (fr) * | 2008-12-19 | 2010-07-15 | E. I. Du Pont De Nemours And Company | Prétraitement par solvant organique d'une biomasse pour augmenter la saccharification enzymatique |
| US8241880B2 (en) | 2008-12-19 | 2012-08-14 | E I Du Pont De Nemours And Company | Organic solvent pretreatment of biomass to enhance enzymatic saccharification |
| WO2011086244A2 (fr) | 2009-12-23 | 2011-07-21 | IFP Energies Nouvelles | Procede de production d'alcools et/ou de solvants a partir de pulpes papetieres avec recyclage du vegetal non hydrolyse dans un reacteur de regeneration |
| WO2011086245A2 (fr) | 2009-12-23 | 2011-07-21 | IFP Energies Nouvelles | Procédé de production d'alcools et/ou de solvants à partir de pulpes papetières avec recyclage du végétal non hydrolysé |
| US9034620B2 (en) | 2010-03-19 | 2015-05-19 | Poet Research, Inc. | System for the treatment of biomass to facilitate the production of ethanol |
| US10533203B2 (en) | 2010-03-19 | 2020-01-14 | Poet Research, Inc. | System for the treatment of biomass |
| US9663807B2 (en) | 2011-01-18 | 2017-05-30 | Poet Research, Inc. | Systems and methods for hydrolysis of biomass |
| US9982317B2 (en) | 2011-07-07 | 2018-05-29 | Poet Research, Inc. | Systems and methods for acid recycle |
| US10731229B2 (en) | 2011-07-07 | 2020-08-04 | Poet Research, Inc. | Systems and methods for acid recycle |
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