Abrégé

According to a first aspect, there is provided a method of fractionating a biomass material. The method comprises treating the biomass material with an aqueous medium to form a slurry. The method further comprises subjecting the slurry to sonication to produce a sonicated mixture comprising a liquid component (L) and a solid component (S) comprising lignin and cellulose. The aqueous medium can comprise an acid (preferably organic acid) catalyst.

Classes IPC  ?

• C08B 37/00 - Préparation des polysaccharides non prévus dans les groupes Leurs dérivés
• C08H 8/00 - Composés macromoléculaires dérivés de matériaux lignocellulosiques
• D21C 3/00 - Réduction en pâte des matières contenant de la cellulose

Abrégé

There is described a method of processing biomass which comprises the steps of: (i) processing biomass material in an aqueous system in the presence of an oxalic acid catalyst to produce a slurry; (ii) subjecting the slurry to an acidified organosolv liquor and optionally de-aerating the resulting mixture before exposing the mixture to ultrasound in a pretreatment step; and (iii) completing the fractionation process using thermal digestion, followed by separation of the constituents into lignin, hemi-cellulose (monosaccharides) and cellulose with the addition of water.

Classes IPC  ?

• C07G 1/00 - Dérivés de lignine à bas poids moléculaire
• D21C 11/00 - Régénération des liqueurs noires
• D21C 1/04 - Traitement préalable des matériaux finement divisés avant la cuisson avec des composés à réaction acide
• D21C 3/20 - Réduction en pâte des matières contenant de la cellulose avec des solvants organiques
• D21C 3/22 - Autres caractéristiques des procédés de réduction en pâte
• C07H 1/06 - SéparationPurification
• D21C 3/00 - Réduction en pâte des matières contenant de la cellulose

Abrégé

There is described a method of fractionating a biomass material comprising: (i) blending the biomass material with an acid catalyst to form a slurry; (ii) mixing the slurry with an organosolv reagent optionally under an inert atmosphere to form a pre-treatment mix; (iii) subjecting the pre-treatment mix to sonication; (iv) optionally heating the product of step (iii) in an autoclave under pressure; (v) separating the solid and liquid components of the fractionation mix; (vi) optionally washing the solid; (vii) optionally drying the solid component; (viii) separating the liquid component into organic and aqueous components; and (ix) isolating lignin from the organic component and/or isolating hemi-cellulose from the aqueous component.

Classes IPC  ?

• D21C 11/00 - Régénération des liqueurs noires
• D21C 1/00 - Traitement préalable des matériaux finement divisés avant la cuisson
• D21C 3/00 - Réduction en pâte des matières contenant de la cellulose
• D21C 5/00 - Autres procédés pour obtenir de la cellulose, p. ex. cuisson des linters de coton
• C08H 7/00 - LignineLignine modifiéeProduits dérivés à haut poids moléculaire
• C08H 8/00 - Composés macromoléculaires dérivés de matériaux lignocellulosiques
• C07G 1/00 - Dérivés de lignine à bas poids moléculaire
• C08B 37/00 - Préparation des polysaccharides non prévus dans les groupes Leurs dérivés
• D21C 1/04 - Traitement préalable des matériaux finement divisés avant la cuisson avec des composés à réaction acide
• D21C 1/10 - Méthodes physiques pour faciliter l'imprégnation

Abrégé

There is described a method of processing biomass which comprises the steps of: (i) processing biomass material in an aqueous system in the presence of an oxalic acid catalyst to produce a slurry; (ii) subjecting the slurry to an acidified organosolv liquor and optionally de-aerating the resulting mixture before exposing the mixture to ultrasound in a pretreatment step; and (iii) completing the fractionation process using thermal digestion, followed by separation of the constituents into lignin, hemi-cellulose (monosaccharides) and cellulose with the addition of water.

Classes IPC  ?

• D21C 1/04 - Traitement préalable des matériaux finement divisés avant la cuisson avec des composés à réaction acide
• D21C 3/20 - Réduction en pâte des matières contenant de la cellulose avec des solvants organiques
• D21C 3/22 - Autres caractéristiques des procédés de réduction en pâte
• D21C 11/00 - Régénération des liqueurs noires

Abrégé

There is described a method of fractionating a biomass material comprising: (i) blending the biomass material with an acid catalyst to form a slurry; (ii) mixing the slurry with an organosolv reagent optionally under an inert atmosphere to form a pre-treatment mix; (iii) subjecting the pre-treatment mix to sonication; (iv) optionally heating the product of step (iii) in an autoclave under pressure; (v) separating the solid and liquid components of the fractionation mix; (vi) optionally washing the solid; (vii) optionally drying the solid component; (viii) separating the liquid component into organic and aqueous components; and (ix) isolating lignin from the organic component and/or isolating hemi- cellulose from the aqueous component.

Classes IPC  ?

• C08B 37/00 - Préparation des polysaccharides non prévus dans les groupes Leurs dérivés
• D21C 1/00 - Traitement préalable des matériaux finement divisés avant la cuisson
• D21C 3/00 - Réduction en pâte des matières contenant de la cellulose
• D21C 5/00 - Autres procédés pour obtenir de la cellulose, p. ex. cuisson des linters de coton

Abrégé

There is described a method of processing biomass which comprises the digestion of biomass material in an aqueous solvent system subjected to ultrasonic waves and separating the biomass into its constituents of lignin, hemicellulose and cellulose. There is also described a system for the processing of biomass which comprises the digestion of biomass material in an aqueous solvent system subjected to ultrasonic waves and separating the biomass into ins constituents of lignin, hemicellulose and cellulose.

Classes IPC  ?

• C08B 37/00 - Préparation des polysaccharides non prévus dans les groupes Leurs dérivés
• C08H 8/00 - Composés macromoléculaires dérivés de matériaux lignocellulosiques
• D21C 3/00 - Réduction en pâte des matières contenant de la cellulose

Abrégé

There is described a method of processing biomass which comprises the
digestion of biomass material in an aqueous
solvent system subjected to ultrasonic waves and separating the biomass into
its constituents of lignin, hemicellulose and cellulose.
There is also described a system for the processing of biomass which comprises
the digestion of biomass material in an
aqueous solvent system subjected to ultrasonic waves and separating the
biomass into ins constituents of lignin, hemicellulose and
cellulose.

Classes IPC  ?

• C08B 37/00 - Préparation des polysaccharides non prévus dans les groupes Leurs dérivés
• C08H 8/00 - Composés macromoléculaires dérivés de matériaux lignocellulosiques
• D21C 3/00 - Réduction en pâte des matières contenant de la cellulose