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公开(公告)号：US20240102064A1
公开(公告)日：2024-03-28
申请号：US18523358
申请日：2023-11-29
申请人： Inbicon A/S
CPC分类号： C12P19/14 , C12P7/10 , C12P19/02 , C13K1/02 , C13K13/002 , D21C1/04 , D21C3/04 , C12P2201/00 , Y02E50/10
摘要： The invention relates, in general, to methods of processing Lignocellulosic biomass to fermentable sugars and to methods that rely on hydrothermal pretreatment. Xylose monomer yields comparable to those achieved using two-stage pretreatments can be achieved from soft Lignocellulosic biomass feedstocks by pretreasting to very low severity in a single-stage pressurized hydrothermal pretreatment, followed by enzymatic hydrolysis to release xylose retained in the solid state. In some embodiments, pretreated biomass is separated into a solid fraction and a liquid fraction, the solid fraction subjected to enzymatic hydrolysis, and the separated liquid fraction subsequently mixed with the hydrolysed solid fraction.
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公开(公告)号：US11920203B2
公开(公告)日：2024-03-05
申请号：US17250508
申请日：2019-07-15
摘要： Lignocellulosic biomass (11) is processed to produce organic chemicals by (a) subjecting the biomass to a first hydrolysis (14) to hydrolyse hemicellulose, to form a liquid component comprising the products of hemicellulose hydrolysis in solution, and a solid component comprising cellulose and lignin; (b) then subjecting the solid component to a second hydrolysis (20), so as to hydrolyse cellulose and vaporise the resulting products of cellulose hydrolysis; and (c) then condensing (22) the resulting vapours to form an aqueous solution (25) containing the products of cellulose hydrolysis. After the first hydrolysis (14) and before the second hydrolysis (20), the process also comprises subjecting the solid component to a washing step (16). In this washing step (16) the solid component is washed with the aqueous solution (25) that contains the products of cellulose hydrolysis. Hence the resultant solution contains the products of both the first and the second hydrolysis steps (14, 20).
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公开(公告)号：US20230383371A1
公开(公告)日：2023-11-30
申请号：US18326754
申请日：2023-05-31
申请人： Lusbio, Inc.
发明人： Robert Bartek , Bahman Rejai
IPC分类号： C13K1/02 , B01J23/745 , C12P19/02 , C12P39/00 , C13K13/00
CPC分类号： C13K1/02 , B01J23/745 , C12P19/02 , C12P39/00 , C13K13/00 , C12P2201/00
摘要： A method for treating biomass including lignocellulosic polymers. The biomass is treated in a mixture of water with at least one oxidizing agent and steam at a temperature in a range of from about 130° C. to about 220° C. for a period from about 5 seconds to about 10 hours. The pH of the mixture is periodically measured for substantially an entire duration of the treating step. As necessary, based on the measured pH of the mixture, adjusting the pH of the mixture into a range of from about pH 4.5 to about pH 7.5 by adding a base to the mixture.
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公开(公告)号：US11773420B2
公开(公告)日：2023-10-03
申请号：US17170169
申请日：2021-02-08
申请人： VERSALIS S.P.A.
发明人： Bertus Noordam , Loes Elizabeth Bevers , Rudy Francois Maria Jozef Parton , Michael Petrus Jozef Berkhout
CPC分类号： C12P19/02 , C12P19/14 , C13K1/02 , C13K13/00 , C13K13/002 , D21C3/26 , C12P2203/00 , Y02E50/10
摘要： The invention relates to a process for the preparation of a fermentation product from lignocellulosic material, comprising the following steps:
a) optionally, pretreatment of the lignocellulosic material,
b) optionally, washing of the optionally pretreated lignocellulosic material,
c) enzymatic hydrolysis of the optionally washed and/or optionally pretreated lignocellulosic material using an enzyme composition comprising at least two cellulases and whereby the enzyme composition at least comprises LPMO, and optionally purifying the hydrolysed lignocellulosic material,
d) fermentation of the hydrolysed lignocellulosic material to produce a fermentation product, and
e) optionally, recovery of a fermentation product,
wherein the amounts of formed hydrolysed oxidation products at the end of the enzymatic hydrolysis by the oxidation by LPMO of the lignocellulosic material containing cellulose and/or cello-oligosaccharides is kept between 3 to 80 g/kg glucan present in the lignocellulosic material by adding a suitable amount of oxygen after the pre-treatment and before and/or during the enzymatic hydrolysis to the lignocellulosic material, preferably the formed hydrolysed oxidation product is gluconic acid, an aldonic acid and/or geminal diol, more preferably the hydrolysed oxidation product is gluconic acid.-
公开(公告)号：US20230295753A1
公开(公告)日：2023-09-21
申请号：US17615792
申请日：2020-05-26
CPC分类号： C13K13/002 , C13K1/02 , D21C3/04
摘要： A process for hydrolyzing at least part of the hemicellulose and at least part of the cellulose of a particulate solid material comprising cellulose, lignin, and from 10 to 60% by weight of hemicellulose, wherein said hemicellulose comprises xylose in an amount of from 40 to 100% by weight, on the basis of hemicellulose, said process being conducted in at least one reactor comprising said particulate solid material and interstitial space. The process comprises two hydrolysis steps using hydrochloric acid, separated by a displacement step wherein a water-immiscible displacement fluid displaces part of the hydrochloric acid containing hydrolysate products from the interstitial space in the reactor. In the present process, a particulate solid material is used of which the hemicellulose is high in xylose (xylan).
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公开(公告)号：US11725066B2
公开(公告)日：2023-08-15
申请号：US17220961
申请日：2021-04-02
摘要： The present invention relates to a process for extracting oxidised metal pollutants from treated cellulosic or lignocellulosic biomass to recover the metal. The treatment also generates a cellulosic or lignocellulosic biomass which can to be used as a feedstock for biofuel, for making cellulose containing materials, and provides a source of other renewable chemicals.
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公开(公告)号：US11485989B2
公开(公告)日：2022-11-01
申请号：US16952310
申请日：2020-11-19
申请人： Valmet AB
发明人： Peter Björklund , Andreas Averheim
IPC分类号： D21C3/24 , D21C7/00 , D21C5/00 , C12P19/00 , C12P19/14 , C12P19/02 , C13K1/02 , D21C7/06 , D21C7/08 , D21C7/10
摘要： The present invention relates to an improved method and device for treating biomass in which thermally treated biomass is discharged from a pressurized reactor and introduced into a blow tank, wherein the absolute pressure in the blow tank is maintained below atmospheric pressure. The slurry of biomass separated in the blow tank is then enzymatically treated.
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公开(公告)号：US11365454B2
公开(公告)日：2022-06-21
申请号：US16142321
申请日：2018-09-26
申请人： POET Research, Inc.
IPC分类号： C12M3/00 , C12P19/00 , C13K1/02 , C12P19/02 , C12P19/14 , C12M1/00 , C12M1/26 , C12P7/10 , C12M1/33 , C12M1/34
摘要： The present disclosure includes systems and methods for hydrolyzing (e.g., pretreatment and/or enzymatic hydrolysis) lignocellulosic biomass into one or more sugars such as pentose and glucose sugars. The present disclosure includes configurations that incorporate flashing and/or liquid cooling so as to permit desirable throughput. The present disclosure also includes a liquefaction configuration so as to permit desirable (e.g., continuous high volume) throughput.
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公开(公告)号：US11332768B2
公开(公告)日：2022-05-17
申请号：US15324974
申请日：2015-07-10
发明人： Alex Baker , Leslie Alan Edye
IPC分类号： C08H8/00 , C12P19/00 , D21C1/04 , D21C3/02 , D21C3/04 , D21C1/06 , C12P19/14 , C12P7/6463 , C08H7/00 , C12P19/02 , C13K1/02 , C12P7/10 , C12P7/16 , C12P7/64 , C12M1/00
摘要： A method for producing a partially hydrolysed lignocellulosic material is provided including treating a lignocellulosic material with an acid and/or an alkali and then a polyol. Also provided are methods of producing a fermentable sugar, or a fermentable sugar and a fermentation product from said partially hydrolysed lignocellulosic material. A partially hydrolysed lignocellulosic material, a fermentable sugar, and fermentation product produced by such methods are also provided. Also provided is an apparatus for producing a partially hydrolysed lignocellulosic material, such as by the aforementioned method.
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公开(公告)号：US20220098440A1
公开(公告)日：2022-03-31
申请号：US17498014
申请日：2021-10-11
IPC分类号： C09D197/00 , C12P19/02 , C04B16/02 , C12P19/14 , C09K8/035 , C08B37/00 , C08H7/00 , C08H8/00 , C08L1/02 , C08L5/14 , C08L97/00 , C08L97/02 , C12P7/10 , C13K1/02
摘要： Processes disclosed are capable of converting biomass into high-crystallinity, hydrophobic cellulose. In some variations, the process includes fractionating biomass with an acid (such as sulfur dioxide), a solvent (such as ethanol), and water, to generate cellulose-rich solids and a liquid containing hemicellulose and lignin; and depositing lignin onto cellulose fibers to produce lignin-coated cellulose materials (such as dissolving pulp). The crystallinity of the cellulose material may be 80% or higher, translating into good reinforcing properties for composites. Optionally, sugars derived from amorphous cellulose and hemicellulose may be separately fermented, such as to monomers for various polymers. These polymers may be combined with the hydrophobic cellulose to form completely renewable composites.
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