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    Improvements In Biomass Fermentation into Ethanol
    1.
    发明公开
    Improvements In Biomass Fermentation into Ethanol 审中-公开

    公开(公告)号：US20240060094A1

    公开(公告)日：2024-02-22

    申请号：US18452169

    申请日：2023-08-18

    Applicant: SixRing Inc.

    Inventor： Alexandra OSTASZEWSKI ,  Julie GREER ,  Alejandra ENRIQUEZ ,  Kyle G. WYNNYK ,  Andrew CORBETT ,  Markus WEISSENBERGER

    IPC: C12P7/10

    CPC classification number: C12P7/10

    Abstract: A method of obtaining ethanol from a lignocellulosic biomass comprises delignification of a lignocellulosic biomass using a modified Caro's acid. Next a solid portion of the delignification reaction mixture is recovered wherein the solid portion comprises a substantially hemicellulose-free cellulosic component which includes at most, up to 15% w/w hemicellulose. Next, the recovered solid portion of the resulting reaction mixture is exposed to an enzyme mix comprising cellulase enzymes to create a saccharification system that breaks down the cellulose into a saccharified composition such as oligosaccharides. The saccharified composition is then fed to an organism, such as yeast, with the ability to ferment sugars into ethanol.

    COMBINATION APPROACH TO DELIGNIFICATION OF BIOMASS UNDER AMBIENT CONDITIONS
    5.
    发明申请
    COMBINATION APPROACH TO DELIGNIFICATION OF BIOMASS UNDER AMBIENT CONDITIONS 有权

    公开(公告)号：US20220186434A1

    公开(公告)日：2022-06-16

    申请号：US17404199

    申请日：2021-08-17

    Applicant: SixRing Inc.

    Inventor： Clay PURDY ,  Markus WEISSENBERGER ,  Markus PAGELS ,  Kyle G. WYNNYK ,  Matthew DEWIT ,  Andrew C. CORBETT

    IPC: D21C3/04 ,  D21C3/00 ,  D21C9/16

    Abstract: Method of delignification of plant material, said method comprising: providing said plant material comprising cellulose fibres and lignin; exposing said plant material requiring to a composition comprising: an acid; a modifying agent selected from the group consisting of: sulfamic acid; imidazole; N-alkylimidazole derivative; taurine; a taurine derivative; a taurine-related compound; alkylsulfonic acid; arylsulfonic acid; triethanolamine; and combinations thereof; a metal oxide; and a peroxide; adding an organic solvent to the resulting mixture; allowing a delignification reaction to occur for a period of time sufficient to remove at least 80% of the lignin present on said plant material.

    APPROACH TO BIOMASS DELIGNIFICATION
    8.
    发明申请
    APPROACH TO BIOMASS DELIGNIFICATION 有权

    公开(公告)号：US20220195664A1

    公开(公告)日：2022-06-23

    申请号：US17405028

    申请日：2021-08-18

    Applicant: SixRing Inc.

    Inventor： Clay PURDY ,  Markus WEISSENBERGER ,  Markus PAGELS ,  Kyle G. WYNNYK ,  Matthew DEWIT ,  Andrew C. CORBETT

    IPC: D21C3/04 ,  D21C3/00 ,  D21C9/16

    Abstract: A process to separate lignin from a lignocellulosic feedstock, said process comprising the steps of: providing said lignocellulosic feedstock; providing a composition comprising; an acid; a modifying agent selected from the group consisting of: sulfamic acid; imidazole; imidazole derivatives; taurine; a taurine derivative; a taurine-related compound; alkylsulfonic acid; arylsulfonic acid; triethanolamine; and combinations thereof; a peroxide salt; and a peroxide; exposing said lignocellulosic feedstock to said composition for a period of time sufficient to depolymerize substantially all of the lignin present in said lignocellulosic feedstock into lignin oligomers and lignin monomers; wherein said process is carried out at atmospheric pressure.

    IMPROVEMENTS IN BIOMASS DELIGNIFICATION
    9.
    发明公开
    IMPROVEMENTS IN BIOMASS DELIGNIFICATION 审中-公开

    公开(公告)号：US20240209159A1

    公开(公告)日：2024-06-27

    申请号：US18392952

    申请日：2023-12-21

    Applicant: SixRing Inc.

    Inventor： Alejandra ENRIQUEZ ,  Matthew DEWIT ,  Kyle G. WYNNYK ,  Markus WEISSENBERGER

    IPC: C08H8/00 ,  C08H7/00

    CPC classification number: C08H8/00 ,  C08H6/00

    Abstract: A method for removing the constituents of a biomass into separate streams, where said method comprises the following steps:



    Step 1: providing a biomass feedstock comprising: cellulose; hemicellulose; and lignin;
    Step 2: exposing said biomass to a first acidic composition comprising an acid selected from the group consisting of: mineral acids; organic acids; modified acids; synthetic acids; and combinations thereof; for a first period of time sufficient to dissolve at least 50% of the hemicellulose present in said biomass;
    Step 3: separating and recovering into a first liquid stream, the dissolved hemicellulose from the remaining biomass;
    Step 4: exposing the remaining biomass mixture to a modified Caro's acid selected from the group consisting of:

    composition A; composition B and Composition C;
    wherein said composition A comprises:

    sulfuric acid in an amount ranging from 20 to 70 wt % of the total weight of the composition;
    a compound comprising an amine moiety and a sulfonic acid moiety selected from the group consisting of: taurine; taurine derivatives; and taurine-related compounds; and
    a peroxide;


    wherein said composition B comprises:

    an alkylsulfonic acid; and
    a peroxide; wherein the acid is present in an amount ranging from 40 to 80 wt % of the total weight of the composition and where the peroxide is present in an amount ranging from 10 to 40 wt % of the total weight of the composition;


    wherein said composition C comprises:

    sulfuric acid;
    a compound comprising an amine moiety;
    a compound comprising a sulfonic acid moiety; and
    a peroxide;


    for a first period of time sufficient to dissolve enough of the lignin present in said remaining biomass mixture to obtain a kappa number for the cellulose of less than 5;
    for a first period of time sufficient to dissolve enough of the lignin present in said remaining biomass mixture to obtain a kappa number for the cellulose of less than 5;


    Step 5: recovering into a second liquid stream the dissolved lignin from the resulting reaction mixture, wherein said solid portion comprises cellulose fibers with, at most, 7.5 wt % hemicellulose.

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