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WO2008134037A1 - Traitement de la biomasse lignocellulosique avec des agents tensioactifs - Google Patents

Traitement de la biomasse lignocellulosique avec des agents tensioactifs Download PDF

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Publication number
WO2008134037A1
WO2008134037A1 PCT/US2008/005431 US2008005431W WO2008134037A1 WO 2008134037 A1 WO2008134037 A1 WO 2008134037A1 US 2008005431 W US2008005431 W US 2008005431W WO 2008134037 A1 WO2008134037 A1 WO 2008134037A1
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WO
WIPO (PCT)
Prior art keywords
lignocellulosic biomass
surfactants
lignin
pretreatment
surfactant
Prior art date
Application number
PCT/US2008/005431
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English (en)
Inventor
Bin Yang
Charles E. Wyman
Qing Qing
Michael Studer
Original Assignee
Regents Of The Universty Of California
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Regents Of The Universty Of California filed Critical Regents Of The Universty Of California
Publication of WO2008134037A1 publication Critical patent/WO2008134037A1/fr

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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
    • 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
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08H—DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
    • C08H8/00—Macromolecular compounds derived from lignocellulosic materials
    • 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 is directed methods and systems for enhancing the removal of lignin during a pretreatment process, and more particularly to the addition of one or more surfactants during pretreatment of a lignocellulosic biomass.
  • the US transportation sector is the largest contributor to greenhouse gas (GHG) emissions and is almost totally fueled by petroleum, about two thirds of which is imported with unstable regions holding most reserves.
  • GSG greenhouse gas
  • President Bush announced a goal of displacing 20% of fossil fuels by alternatives by 2017. Conversion of inexpensive and abundant cellulosic biomass to fuels has powerful attributes for production of sustainable transportation fuels. Producing ethanol from these materials is particularly well suited to the goals above due to the very high yields possible, the dramatic cost reductions that have been realized to make it competitive now, and the power of modern biotechnology for substantial additional cost reductions.
  • Cellulosic ethanol offers powerful benefits including near zero net greenhouse gas emissions, enhanced energy security and balance of trade, and creation of rural jobs.
  • State-of-the-art technologies are needed for biologically converting abundant cellulosic biomass to ethanol and develop advanced processes that reduce costs while enhancing yields.
  • Particular attention should be focused on integration of pretreatment, enzymatic hydrolysis, and fermentation operations, the most costly process steps.
  • valuable data should be assembled in collaboration with experts on the availability, composition, and cost of biomass that is promising for ethanol production.
  • the resulting feedstock and process information will facilitate assessments by industry of opportunities to competitively make ethanol from major fractions of agricultural residues and municipal solid waste and accelerate commercialization of processes for converting low cost cellulosic biomass into valuable products with major societal benefits.
  • the lignin contained in them must be removed or modified by the pretreatment in order to avoid unproductive adsorptions.
  • enzymatic digestibility of pretreated corn stover was enhanced by adding surfactants at 160-220° C. with and without acid. Compared with controls, most of the surfactants efficiently reduced the hydrophobicity on the corn stover surface.
  • the adsorption of cellulases on pretreated samples were reduced due to the interaction of the surfactants with the lignin.
  • Pre-treatment of the lignocellulosic biomass with surfactants also increased the digestibility of the lignocellulosic biomass and glucose recovery.
  • FIGURE 1 depicts the structure of a small piece of lignin polymer.
  • FIG. 2 is a schematic representation of hydrophilic lignin after treatment with a surfactant.
  • FIG. 3 shows data depicting the hydrophobicity of lignin after treatment with surfactants.
  • FIG. 4 is a schematic representation of the batch process of treating a lignocellulosic biomass with a surfactant.
  • FIG. 5 are photographs of batch reactors and their use in a heated sand bath.
  • FIG. 6 is a schematic representation of the a process using a flowthrough reactor for treating a lignocellulosic biomass with a surfactant.
  • FIG. 7 is a schematic representation of a flowthrough system.
  • FIG. 8 is a schematic of surface modification of a biomass with surfactants.
  • FIG. 9 is a block diagram of the effects of surfactants on pure lignin..
  • FIG. 10 is graph showing the glass transition temperature relative to different biomasses.
  • FIG. 11 is an infrared spectroscopy graph of different biomasses.
  • FIG. 12 shows data depicting lignin removal after treatment with surfactants in a batch reactor.
  • FIG. 13 shows data depicting lignin removal after treatment with surfactants in a flowthrough reactor.
  • FIG. 14 shows data depicting lignin removal after treatment with various surfactants.
  • FIG. 15 shows data depicting digestibility after treatment with various surfactants.
  • FIG. 16 shows data depicting the surgery recovery using TWEEN-80 and control samples of different biomasses.
  • FIG. 17 shows data depicting digestibility after treatment with a Tween 80 surfactant in a flowthrough reactor at different temperatures.
  • FIG. 18 shows data depicting digestibility after treatment with a Tween 80 surfactant compared to hydrolysis with BSA.
  • FIG. 19 shows data depicting glucose recovery after treatment with various surfactants in a batch system without acid pretreatment.
  • FIG. 20 shows data depicting glucose recovery after treatment with various surfactants in a batch system with one percent sulfuric acid pretreatment.
  • FIG. 21 is a flow chart of hydrolyzate recovery.
  • FIG. 22 is a set of method steps for hydrolyzate recovery.
  • FIG. 23 is a flow chart of treatment with blockers.
  • FIG. 24 is a set of method steps for treatment with blockers.
  • FIG. 23 is a flow chart of treatment with enzymes.
  • FIG. 26 is a set of method steps for treatment with enzymes.
  • the method of the present invention is directed to the use surfactants during pretreatment of lignocellulosic biomass to remove lignin, to modify the biomass surface and to improve enzymatic hydrolysis with high yield, low cost.
  • the method of the present invention includes pre-treating the biomass with one or more surfactants with or without an acid or a base at a temperature ranging from about 100° C. to about 210° C.
  • Suitable surfactants include ionic and non-ionic surfactants that are suitable for use under high temperatures and are acid and/or alkali resistant in the mixture.
  • the mixture may have a pH ranging from 1-14.
  • Such suitable surfactants include, but are not limited to, Tween-80, Tween-20, PEG, DDBSA, glusopone/215, glusopone/225 and glusopone/625.
  • enzymatic digestibility of pretreated corn stover is enhanced by adding surfactants at about 160° C. to about 220 0 C, with and without acid. Compared with controls, most of the surfactants tested efficiently reduce the hydrophobicity on the corn stover surface. In addition, the non-specific adsorption of cellulases on pretreated samples can be reduced because surfactants are believed to interact with lignin.
  • Bioconversion of cellulosic biomass to fuels and commodity products has many potential benefits, and biomass refining provides a very promising alternative for efficient utilization of biomass.
  • enzymatic hydrolysis of the cellulose in cellulosic materials to glucose followed by fermentation to ethanol is a very attractive route to produce sustainable liquid transportation fuels.
  • enzymatic hydrolysis may be the most complex step in the bioconversion process due to the combination of substrate- related and enzyme-related effects.
  • the hydrolysis mechanism and the relationship between the structure and function of various cellulases have been extensively studied, the complex biomass structure confounds understanding the relative importance of these features and their roles, and reducing one barrier to digestion can enhance or disguise the importance of others.
  • the hydrophilic surfactant having high HLB values was useful for the extraction of hydrophobic degradation products from lignin and hemicellulose.
  • an addition of Tween 20 to the UCT-solvent increased the effect of UCT-solvent pretreatment. This is because the surfactant makes the separation of the degradation products easier.
  • thermo-chemical pretreatment by UCT-solvent, having an upper critical-temperature (UCT) in the mutual solubility curve, is excellent as the pretreatment for bagasse and wood.
  • lignin is an obstructer during hydrolysis.
  • Lignin is believed to affect enzymatic hydrolysis by unproductive binding with enzymes. Removing or modifying the lignin could be an effective way to reduce the enzyme loading. Lignin binds cellulose fibers together in a composite structure with excellent properties but also reduces the accessibility of cellulose to enzymes.
  • Various studies have reported improved cellulose hydrolysis with increasing lignin removal, although differences have been reported in the degree of lignin removal needed. Lignin has been claimed to depolymerize and then repolymerize during hemicellulose hydrolysis, although no doubt in a different morphology that could change its impact on cellulose digestion.
  • lignin modified by pretreatment is very important to enhance cellulose digestibility and that lignin removal provides even greater benefits.
  • Tween 20 reduced thermal deactivation of cellulase and increased enzymatic cellulose and xylan conversion for lime pretreated corn stover by 42% and 40%, respectively, with loading on biomass found to be more important than the concentration in solution.
  • Tween 80 polyoxyethylene sorbitan monoleate
  • SSF simultaneous saccharification and fermentation
  • surfactants will react with lignin, solubilizing lignin and modifying the biomass surface to decrease the hydrophicity of the substrate.
  • addition of surfactants during pretreatment of biomass improves the lignin removal and reduces non-specific adsorption of cellulases to benefit the following enzymatic hydrolysis process.
  • Previous research and debate on the effect of surfactants on enzymatic hydrolysis may be found in (1) Steve S. Helle, Sheldon J. B. Duff, "Effect of Surfactants on cellulose hydrolysis, 1993 (the hydrolysis of steam exploded wood was increased by 67% in the presence of sophorolipid); (2) M. Kurakake.H.
  • the batch reactors may be made of Hastelloy (C276) tubing.
  • Hastelloy caps are very expensive, Teflon plugs may be inserted in both ends that were then capped with stainless steel Swagelok fittings (Maine Valve and Fitting Co., Bangor, ME, USA).
  • the working volume of these tubular reactors may be about 13.4 mL.
  • Thermocouple probes may be inserted along the centerline of the tubes and pushed to about 3/16" and 2" into the reactor. Reaction temperatures of 160, 180, 200, and 220° C.
  • the reactors After being subjected to the target temperature for a given time, the reactors are quickly transferred to an ice water bath to quench the reaction. Next, the tubes are removed from the water and dried, and the end caps and Teflon plugs were removed. The contents are then pushed out and separated into liquid and solid fractions by filtration for analysis.
  • flowthrough systems may be configured with a 1/2-in ID x 6-in length with an internal volume of 14.3 mL.
  • These units may be constructed of 316 stainless steel parts using VCRTM (trademark of Swagelock Corporation) fittings, including one VCR male union (1/2-in), two gasket filters (316 stainless steel, average pore size 5 ⁇ m), two VCR glands (1/2-in x 1/2-in), two VCR nuts, and two VCR reducing fittings (1/2-inx 1/8-in).
  • VCRTM trademark of Swagelock Corporation
  • Such reactor parts may be obtained from Maine Valve and Fitting Co (Bangor, ME, USA).
  • a 1/8-in stainless steel thermocouple (Omega Engineering Co., Stamford, CT, USA) may be installed at the outlet of the reactor to monitor temperature.
  • Stainless steel tubing (316) may be used as a preheating coil (1/4-in OD x 0.35-in wall) and to connect the reactor with other system components as well the cooling coil (1/8-in OD x 0.028-in wall).
  • the preheating coil is configured long enough to allow the incoming water to reach the desired temperature before it entered in the reactor, as measured experimentally.
  • a high-pressure pump (Acuflow Series III Pumps, Fisher, Puerto Rico, USA) with a flow rate range from 0 to 40 mL/min, a pressure gauge (pressure range 0- 1500 psi, Cole-Parmer Instrument Co., Vernon Hill, IL, USA), and a back-pressure regulator (Maine Valve and Fitting Co., Bangor, ME, USA) may be used to control flow through the system.
  • the enzymatic digestibility of cellulose by pretreatment of biomass may be enhanced with surfactants.
  • surfactants may modify the surface of pretreated biomass.
  • the class transition temperature is relevant to the surfactant treatment of a biomass.
  • a Parr reactor experimental apparatus was used for xylan depolymerization under the conditions of pH 1.4 (H 2 SO 4 ) at 160° C. for two minutes.
  • various surfactants FIGS. 12 and 13 bind to lignin during the pretreatment process and improve the solubility of lignin thus improving lignin removal.
  • adding surfactants during pretreatment also increase the digestibility of the lignocellulosic biomass.
  • adding surfactants during pretreatment also increase the glucose recovery of the lignocellulosic biomass in a batch process with or without pretreatment with sulfuric acid.
  • BSA cellulase and bovine serum albumin
  • the pretreatment process described herein may be further developed by advanced technology that exploits combining washing feedstocks with room temperature dilute acid; supplementation of simultaneous saccharification and fermentation (SSF) with beta- glucosidase, xylanases, beta-xylosidase, and other enzymes; use of cellobiose fermenting yeast; and addition of surfactants or proteins to maximize total sugar recovery from the solids for the combined operations of pretreatment and enzymatic hydrolysis while minimizing total protein and acid demands.
  • SSF simultaneous saccharification and fermentation
  • Materials with and without the acid wash may then be pretreated with very dilute ( ⁇ 0.5%) and no sulfuric acid at low severities (moderate temperatures and/or short reaction times) to limit hemicellulose sugar losses.
  • xylanases, beta-xylosidase, and other hemicellulase enzymes with different loadings of cellulase and beta-glucosidase enzymes to pretreated solids to solubilize xylose and other hemicellulose components left after low severity pretreatments in addition to glucose based on recent results showing great promise in the reducing total enzyme protein loadings (and therefore costs) to achieve a particular yield.
  • Yields of glucose, xylose, mannose, arabinose, and galactose may be plotted against total protein loadings to identify enzyme combinations that maximize total sugar recovery from the solids and from combined operations of pretreatment and enzymatic hydrolysis while minimizing total protein and acid demands.
  • Cellobiose fermenting organisms combined with additives will be developed to reduce enzyme loadings and improve performance, with focus on one feedstock followed by validation on others. Research may show that Brettanomyces custersii by itself or Brettanomyces clausenii in coculture with Saccharomyces cerevisiae achieved high SSF ethanol yields without beta-glucosidase supplementation, cutting protein costs.
  • FIG. 21 is a flow chart of hydrolyzate recovery.
  • FIG. 22 is a set of method steps for hydrolyzate recovery.
  • FIG. 23 is a flow chart of treatment with blockers.
  • FIG. 24 is a set of method steps for treatment with blockers.
  • FIG. 23 is a flow chart of treatment with enzymes.
  • FIG. 26 is a set of method steps for treatment with enzymes.

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Abstract

L'invention concerne l'hydrolyse enzymatique efficace de la biomasse lignocellulosique, dont la lignine contenue dans celle-ci doit être éliminée ou modifiée par le traitement préalable afin d'éviter les adsorptions non productives. Dans la présente invention, la digestibilité enzymatique de la paille de maïs prétraitée a été renforcée par l'ajout d'agents tensioactifs à une température allant de 160 à 200 °C avec et sans acide. Par comparaison avec des témoins, la plupart des agents tensioactifs ont réduit efficacement le caractère hydrophobe de la surface de paille de maïs. De plus, l'adsorption de cellulases sur les échantillons prétraités a été réduite grâce à l'interaction des agents tensioactifs avec la lignine. Le traitement préalable de la biomasse lignocellulosique avec des agents tensioactifs a également augmenté la digestibilité de la biomasse lignocellulosique et la récupération de glucose.
PCT/US2008/005431 2007-04-27 2008-04-26 Traitement de la biomasse lignocellulosique avec des agents tensioactifs WO2008134037A1 (fr)

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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010093832A3 (fr) * 2009-02-11 2010-12-16 Xyleco, Inc. Saccharification de biomasse
CN102311983A (zh) * 2010-07-07 2012-01-11 中国石油化工股份有限公司 一种生物质制取糖的方法
US8304535B2 (en) 2008-11-20 2012-11-06 E I Du Pont De Nemours And Company Sugar production by decrystallization and hydrolysis of polysaccharide enriched biomass
US8372609B2 (en) 2008-11-20 2013-02-12 E I Du Pont De Nemours And Company Process for producing a sugar solution by combined chemical and enzymatic saccharification of polysaccharide enriched biomass
WO2013083816A1 (fr) 2011-12-07 2013-06-13 Shell Internationale Research Maatschappij B.V. Procédé de génération d'un sucre à partir d'une biomasse lignocellulosique
US8524474B2 (en) 2008-11-20 2013-09-03 E I Du Pont De Nemours And Company Process for producing a concentrated sugar solution by enzymatic saccharification of polysaccharide enriched biomass
EP2580388A4 (fr) * 2010-06-08 2014-09-10 Buckman Labor Inc Procédé pour la dégradation des boues provenant de pâte à papier et de fabrication de papier
WO2014176531A3 (fr) * 2013-04-27 2015-01-08 The Regents Of The University Of California Utilisation d'un co-solvant pour produire des intermédiaires réactifs à partir de biomasse
US20150037848A1 (en) * 2012-03-15 2015-02-05 Kao Corporation Method for producing saccharide
WO2015049345A1 (fr) * 2013-10-02 2015-04-09 Basf Se Procédé de traitement de biomasse contenant de la cellulose
WO2015160887A1 (fr) 2014-04-17 2015-10-22 Shell Oil Company Procédés de production de produits de fermentation
WO2016135030A1 (fr) 2015-02-23 2016-09-01 Basf Se Procédé de traitement d'une biomasse contenant de la cellulose
WO2016135031A1 (fr) 2015-02-23 2016-09-01 Basf Se Procédé de traitement d'une biomasse contenant de la cellulose
WO2018069575A1 (fr) * 2016-10-13 2018-04-19 Upm-Kymmene Corporation Procédé et appareil pour hydrolyse enzymatique, fraction liquide et fraction solide
US10087476B2 (en) 2013-12-06 2018-10-02 Iogen Corporation Process for hydrolyzing a pretreated feedstock and recovering lignin
US10342243B2 (en) 2014-09-19 2019-07-09 Xyleco, Inc. Saccharides and saccharide compositions and mixtures
EP3536801A1 (fr) 2018-02-09 2019-09-11 INDIAN OIL CORPORATION Ltd. Composition d'additif pour améliorer la production de sucres fermentescibles à partir de biomasse lignocellulosique
EP3280812B1 (fr) 2015-04-10 2024-02-28 Comet Biorefining Inc. Procédés et compositions pour le traitement d'une biomasse cellulosique et produits ainsi obtenus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040231060A1 (en) * 2003-03-07 2004-11-25 Athenix Corporation Methods to enhance the activity of lignocellulose-degrading enzymes
US20050191736A1 (en) * 2004-01-30 2005-09-01 Novozymes Biotech, Inc. Polypeptides having cellulolytic enhancing activity andpolynucleotides encoding same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040231060A1 (en) * 2003-03-07 2004-11-25 Athenix Corporation Methods to enhance the activity of lignocellulose-degrading enzymes
US20050191736A1 (en) * 2004-01-30 2005-09-01 Novozymes Biotech, Inc. Polypeptides having cellulolytic enhancing activity andpolynucleotides encoding same

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8304535B2 (en) 2008-11-20 2012-11-06 E I Du Pont De Nemours And Company Sugar production by decrystallization and hydrolysis of polysaccharide enriched biomass
US8524474B2 (en) 2008-11-20 2013-09-03 E I Du Pont De Nemours And Company Process for producing a concentrated sugar solution by enzymatic saccharification of polysaccharide enriched biomass
US8372609B2 (en) 2008-11-20 2013-02-12 E I Du Pont De Nemours And Company Process for producing a sugar solution by combined chemical and enzymatic saccharification of polysaccharide enriched biomass
JP2019080585A (ja) * 2009-02-11 2019-05-30 キシレコ インコーポレイテッド バイオマスの糖化方法
WO2010093832A3 (fr) * 2009-02-11 2010-12-16 Xyleco, Inc. Saccharification de biomasse
JP2016154554A (ja) * 2009-02-11 2016-09-01 キシレコ インコーポレイテッド バイオマスの糖化方法
CN106834385A (zh) * 2009-02-11 2017-06-13 希乐克公司 糖化生物量
CN102300993A (zh) * 2009-02-11 2011-12-28 希乐克公司 糖化生物量
EA023015B1 (ru) * 2009-02-11 2016-04-29 Ксилеко, Инк. Осахаривание биомассы
US9957580B2 (en) 2009-02-11 2018-05-01 Xyleco, Inc. Saccharifying biomass
JP2012517243A (ja) * 2009-02-11 2012-08-02 キシレコ インコーポレイテッド バイオマスの糖化方法
US9121075B2 (en) 2009-02-11 2015-09-01 Xyleco, Inc. Saccharifying biomass
AP4009A (en) * 2009-02-11 2017-01-19 Xyleco Inc Saccharifying biomass
EP2580388A4 (fr) * 2010-06-08 2014-09-10 Buckman Labor Inc Procédé pour la dégradation des boues provenant de pâte à papier et de fabrication de papier
CN102311983B (zh) * 2010-07-07 2014-01-01 中国石油化工股份有限公司 一种生物质制取糖的方法
CN102311983A (zh) * 2010-07-07 2012-01-11 中国石油化工股份有限公司 一种生物质制取糖的方法
WO2013083816A1 (fr) 2011-12-07 2013-06-13 Shell Internationale Research Maatschappij B.V. Procédé de génération d'un sucre à partir d'une biomasse lignocellulosique
US20150037848A1 (en) * 2012-03-15 2015-02-05 Kao Corporation Method for producing saccharide
WO2014176531A3 (fr) * 2013-04-27 2015-01-08 The Regents Of The University Of California Utilisation d'un co-solvant pour produire des intermédiaires réactifs à partir de biomasse
US10774394B2 (en) 2013-04-27 2020-09-15 The Regents Of The University Of California Co-solvent to produce reactive intermediates from biomass
US12371753B2 (en) 2013-04-27 2025-07-29 The Regents Of The University Of California Co-solvent to produce reactive intermediates from biomass
CN105793329B (zh) * 2013-10-02 2019-09-17 巴斯夫欧洲公司 加工含纤维素的生物质的方法
CN105793329A (zh) * 2013-10-02 2016-07-20 巴斯夫欧洲公司 加工含纤维素的生物质的方法
US9822187B2 (en) 2013-10-02 2017-11-21 Basf Se Method for processing cellulose-containing biomass
WO2015049345A1 (fr) * 2013-10-02 2015-04-09 Basf Se Procédé de traitement de biomasse contenant de la cellulose
US10087476B2 (en) 2013-12-06 2018-10-02 Iogen Corporation Process for hydrolyzing a pretreated feedstock and recovering lignin
WO2015160887A1 (fr) 2014-04-17 2015-10-22 Shell Oil Company Procédés de production de produits de fermentation
US10342243B2 (en) 2014-09-19 2019-07-09 Xyleco, Inc. Saccharides and saccharide compositions and mixtures
US10412976B2 (en) 2014-09-19 2019-09-17 Xyleco, Inc. Saccharides and saccharide compositions and mixtures
US10337144B2 (en) 2015-02-23 2019-07-02 Basf Se Method for processing cellulose-containing biomass
CN107250369A (zh) * 2015-02-23 2017-10-13 巴斯夫欧洲公司 加工含纤维素的生物质的方法
US10316106B2 (en) 2015-02-23 2019-06-11 Basf Se Method for processing cellulose-containing biomass
WO2016135031A1 (fr) 2015-02-23 2016-09-01 Basf Se Procédé de traitement d'une biomasse contenant de la cellulose
CN107257807A (zh) * 2015-02-23 2017-10-17 巴斯夫欧洲公司 加工含纤维素的生物质的方法
CN107250369B (zh) * 2015-02-23 2021-11-26 巴斯夫欧洲公司 加工含纤维素的生物质的方法
WO2016135030A1 (fr) 2015-02-23 2016-09-01 Basf Se Procédé de traitement d'une biomasse contenant de la cellulose
EP3280812B1 (fr) 2015-04-10 2024-02-28 Comet Biorefining Inc. Procédés et compositions pour le traitement d'une biomasse cellulosique et produits ainsi obtenus
WO2018069575A1 (fr) * 2016-10-13 2018-04-19 Upm-Kymmene Corporation Procédé et appareil pour hydrolyse enzymatique, fraction liquide et fraction solide
US11230691B2 (en) 2016-10-13 2022-01-25 Upm-Kymmene Corporation Method and an apparatus for an enzymatic hydrolysis, a liquid fraction and a lignin fraction
EP3536801A1 (fr) 2018-02-09 2019-09-11 INDIAN OIL CORPORATION Ltd. Composition d'additif pour améliorer la production de sucres fermentescibles à partir de biomasse lignocellulosique
US10968322B2 (en) 2018-02-09 2021-04-06 Indian Oil Corporation Limited Method for improved production of fermentable sugars from lignocellulosic biomass using additive and enzyme

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