Approach to biomass delignification
AssigneeSixring Inc.
InventorsClay Purdy, Markus Weissenberger, Markus Pagels, Kyle G Wynnyk, Matthew Dewit, Andrew M Corbett
Life of this patent
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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; taurine; a taurine derivative; a taurine-related compound; alkylsulfonic acid; aryl sulfonic acid; triethanolamine; and combinations thereof; a metal salt; and a peroxide; for a period of time sufficient to remove substantially all (at least 80%) of the lignin present on said plant material.
Claims10
A one-pot process to separate lignin from a lignocellulosic feedstock, said process comprising the steps of:
- providing a vessel;
- providing said lignocellulosic feedstock;
- providing a composition comprising;
- an acid;
- a modifying agent selected from the group consisting of:
- imidazole;
- N-alkylimidazole;
- taurine;
- a taurine derivative;
- a taurine-related compound;
- an alkylsulfonic acid;
- an arylsulfonic acid;
- triethanolamine;
- and combinations thereof;
- a metal salt;
- and
- a peroxide;
- exposing said lignocellulosic feedstock to said composition in said vessel for a period of time sufficient to remove at least 80% of the lignin present in said lignocellulosic feedstock;
- optionally, removing a liquid phase comprising dissolved lignin fragments from a solid phase comprising cellulose fibres.
A one-pot process to separate lignin from a lignocellulosic feedstock, said process comprising the steps of:
- providing a vessel;
- providing said lignocellulosic feedstock;
- providing a composition comprising;
- an acid;
- a modifying agent comprises a compound containing an amine group and a compound comprising a sulfonic acid moiety;
- a metal salt;
- and
- a peroxide;
- exposing said lignocellulosic feedstock to said composition in said vessel for a period of time sufficient to remove at least 80% of the lignin present in said lignocellulosic feedstock;
- optionally, removing a liquid phase comprising dissolved lignin fragments from a solid phase comprising cellulose fibres.
Dependencies are inferred from the claim text.