The present disclosure relates to an improved method for treating a lignocellulose biomass in order to dissolve the lignin therein, while the cellulose does not dissolve. The cellulose pulp obtained can be used to produce glucose. In addition the lignin can be isolated for subsequent use in the renewable chemical industry.

The present disclosure relates to an improved method for treating a lignocellulose biomass in order to dissolve the lignin therein, while the cellulose does not dissolve. The cellulose pulp obtained can be used to produce glucose. In addition the lignin can be isolated for subsequent use in the renewable chemical industry.

A method and system to produce treated Cellulose Filaments (CF) and CF products are provided. Feedstock comprising CF in a water solution are mixed with a debonder to produce a mixed stream. The mixed stream is filtered yielding separate filtered and filtrate streams. The filtrate stream comprises at least a portion of the debonder. The filtered stream is dried to produce treated CF. The debonder is one of an alcohol, glycol ether, ester-containing quaternary ammonium salt, amido amine quaternary ammonium salt, disubstituted amide or a mixture thereof. The filtrate stream may be recycled. The mixed stream may be washed before filtering to remove debonder. A thermoplastic polymer-treated Cellulose filament composite material is formable by associating the treated CF with a thermopolymer such as polyolefin, polyurethane (PU), polypropylene (PP), polyester (PE), polylactic acid (PLA), polyhydroxyalkanoates (PHA), polyamide (PA), and ethylene vinyl acetate (EVA) or a mixture.

A method and system to produce treated Cellulose Filaments (CF) and CF products are provided. Feedstock comprising CF in a water solution are mixed with a debonder to produce a mixed stream. The mixed stream is filtered yielding separate filtered and filtrate streams. The filtrate stream comprises at least a portion of the debonder. The filtered stream is dried to produce treated CF. The debonder is one of an alcohol, glycol ether, ester-containing quaternary ammonium salt, amido amine quaternary ammonium salt, disubstituted amide or a mixture thereof. The filtrate stream may be recycled. The mixed stream may be washed before filtering to remove debonder. A thermoplastic polymer-treated Cellulose filament composite material is formable by associating the treated CF with a thermopolymer such as polyolefin, polyurethane (PU), polypropylene (PP), polyester (PE), polylactic acid (PLA), polyhydroxyalkanoates (PHA), polyamide (PA), and ethylene vinyl acetate (EVA) or a mixture.

A method for preparing a binder composition containing water, plant fibers and mineral fillers, wherein the method comprises: preparing a suspension of plant fibers and mineral fillers in water, the weight ratio between the plant fibers and the mineral fillers being comprised between 99/1 and 2/98, refining this suspension, and obtaining a binder composition wherein the refined fibers have a mean size of between 10 and 700 μm, and wherein the refined fibers, at least partially, embed the refined mineral fillers,
wherein refining is carried out in the absence of any grinding medium made of ceramic or metal.

Some variations provide a new nanolignocellulose composition comprising, on a bone-dry, ash-free, and acetyl-free basis, from 35 wt % to 80 wt % cellulose nanofibrils, cellulose microfibrils, or a combination thereof, from 15 wt % to 45 wt % lignin, and from 5 wt % to 20 wt % hemicelluloses. The hemicelluloses may contain xylan or mannan as the major component. Novel properties arise from the hemicellulose content that is intermediate between high hemicellulose content of raw biomass and low hemicellulose content of conventional nanocellulose. The nanolignocellulose composition is hydrophobic due to the presence of lignin. Processes for making and using the nanolignocellulose compositions are also described.

The present invention refers to a method and respective system for producing reconstituted vegetable strips, whose said process comprises of milling steps of the vegetable materials to achieve specific particle sizes between 10 to 200 MESH; mixture of cellulose fibers in an intensive mixer to 1 to 10 min; mixture of vegetable material to a binding compound added to the nanocellulose fibers; adding at least one humectant agent and water to the mixture; submitting the mixture to a shearing step through a pre-lamination system comprised of at least two linear and parallel lamination rollers; submitting a strip to a mixture in an intensive mixer for obtainment of an homogeneous mass; lamination of the mixture between at least two linear and parallel lamination rollers, obtaining a continuous strip with a specific thickness; drying the vegetable strip through its passage through a thermal chamber in a specific temperature, between 90° C. and 900° C., through a conveyor belt; and cutting and final processing of the dry strip to obtain the final product.

Where hydrothermal pretreatment of lignocellulosic feedstocks is conducted so as to avoid agitation, melted lignin microdroplets remain very small in size, typically <3 μm. Carrying a net negative surface charge at neutral pH, the solidified microdroplets can be recovered from biogas digestate or process effluents from other biological conversion systems as a liquid fraction following solid/liquid separation to remove fibers, silicates and other suspended solids. This liquid suspension can be concentrated and used directly in chemical and thermochemical conversion systems with or without catalysts. Alternatively, the lignin microparticles can be flocculated and collected as a purified solid fraction. The solids can be solubilized in NaOH at room temperature as wet filter cake and used for base catalysed depolymerization or as fundamental reagent in production of phenolic resins, binder and dispersants. At least with straw and grass feedstocks, the lignin microparticles also include wax content which can be recovered separately.

Where hydrothermal pretreatment of lignocellulosic feedstocks is conducted so as to avoid agitation, melted lignin microdroplets remain very small in size, typically <3 μm. Carrying a net negative surface charge at neutral pH, the solidified microdroplets can be recovered from biogas digestate or process effluents from other biological conversion systems as a liquid fraction following solid/liquid separation to remove fibers, silicates and other suspended solids. This liquid suspension can be concentrated and used directly in chemical and thermochemical conversion systems with or without catalysts. Alternatively, the lignin microparticles can be flocculated and collected as a purified solid fraction. The solids can be solubilized in NaOH at room temperature as wet filter cake and used for base catalysed depolymerization or as fundamental reagent in production of phenolic resins, binder and dispersants. At least with straw and grass feedstocks, the lignin microparticles also include wax content which can be recovered separately.

A method for manufacturing a fibrous web, such as web of paper, board, tissue or the like is disclosed. The method includes obtaining at least one fibre suspension of lignocellulosic and/or cellulosic fibres and feeding the fibre suspension into an intermediate residence entity. The fibre suspension including bacterial endospores, is discharged out of the intermediate residence entity via an outlet after a residence time of at least 2 hours in the intermediate residence entity and after a time delay the fibre suspension is formed into a fibrous web. Bacterial endospores are sensitized by adding a germinant surfactant including a primary or secondary ammonium head group and a linear unsubstituted C12-alkyl tail, to the fibre suspension at an addition point located at a lower part of the intermediate residence entity or after the outlet of the intermediate residence entity, but before the formation of the fibrous web.