A method for separating biomass components by a ternary system, which relates to a technical field of biomass separation, and includes the following steps of: cooking and separating a biomass raw material by using a cooking liquor consisting of organic acid, small aromatic nucleophilic organic molecule and hydrogen peroxide to obtain solid residue and extracting solution, washing and screening the solid residue to obtain paper pulp, and separating and extracting lignin and/or hemicellulose from the extracting solution. This cooking system could effectively minimize the content of residual lignin and other compounds with chromophore groups in the obtained pulp, directly producing the high-whiteness pulp with excellent performance without additional bleaching process. In addition, the hemicellulose saccharides and high-activity lignin can be also obtained, so that the method has an important significance for realizing high value and industrialization of biomass resource utilization.

A method for separating biomass components by a ternary system, which relates to a technical field of biomass separation, and includes the following steps of: cooking and separating a biomass raw material by using a cooking liquor consisting of organic acid, small aromatic nucleophilic organic molecule and hydrogen peroxide to obtain solid residue and extracting solution, washing and screening the solid residue to obtain paper pulp, and separating and extracting lignin and/or hemicellulose from the extracting solution. This cooking system could effectively minimize the content of residual lignin and other compounds with chromophore groups in the obtained pulp, directly producing the high-whiteness pulp with excellent performance without additional bleaching process. In addition, the hemicellulose saccharides and high-activity lignin can be also obtained, so that the method has an important significance for realizing high value and industrialization of biomass resource utilization.

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).

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).

The invention relates to a process for the isolation of components from plant material of Miscanthus. The process comprises three subsequent extractions. The first extraction yields an extract comprising one or more compounds selected from the group of antioxidants, polyphenols, proteins, sterols, acids, alcohols, ketones, aldehydes and aromatic compounds. Thereafter, the plant material is subjected to two extractions with a metal hydroxide (e.g. NaOH), the first performed at a lower pH than the second. These steps yield a sugar fraction and a Iignin fraction, respectively. Finally, from the residue after the third extraction, cellulose is isolated.

The invention relates to a process for the isolation of components from plant material of Miscanthus. The process comprises three subsequent extractions. The first extraction yields an extract comprising one or more compounds selected from the group of antioxidants, polyphenols, proteins, sterols, acids, alcohols, ketones, aldehydes and aromatic compounds. Thereafter, the plant material is subjected to two extractions with a metal hydroxide (e.g. NaOH), the first performed at a lower pH than the second. These steps yield a sugar fraction and a Iignin fraction, respectively. Finally, from the residue after the third extraction, cellulose is isolated.

The present invention provides a process for biomasses. The process may include removing residual moisture from the biomass to provide dried biomass. The dried biomass may be subjected to a basic solution. The biomass may then be heated to a temperature of about 130° F. to about 150° F. for about 30 to 50 minutes. The biomass is then subjected to an oxidation agent for about 40 to 90 minutes. The biomass is then separated into a cellulosic pulp and an extract. The resulting pulp may then be subjected to the basic solution and oxidizing agent a second time. For the terrestrial-based biomasses, the resulting product may be separated into a cellulose rich dissolving grade pulp and an extract high in lignin. For the marine-based biomasses, the resulting product may be separated into a cellulosic-rich pulp and an extract high in sodium alginate.

The present invention provides a process for biomasses. The process may include removing residual moisture from the biomass to provide dried biomass. The dried biomass may be subjected to a basic solution. The biomass may then be heated to a temperature of about 130° F. to about 150° F. for about 30 to 50 minutes. The biomass is then subjected to an oxidation agent for about 40 to 90 minutes. The biomass is then separated into a cellulosic pulp and an extract. The resulting pulp may then be subjected to the basic solution and oxidizing agent a second time. For the terrestrial-based biomasses, the resulting product may be separated into a cellulose rich dissolving grade pulp and an extract high in lignin. For the marine-based biomasses, the resulting product may be separated into a cellulosic-rich pulp and an extract high in sodium alginate.

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 modifiying agent selected from the group consisting of: sulfamic acid; imidazole; N-alkylimidazole; taurine; a taurine derivative; a taurine-related compound; alkylsulfonic acid; arylsulfonic acid; triethanolamine; and combinations thereof; a metal oxide; and a peroxide;
for a period of time sufficient to remove substantially all (at least 80%) of the lignin present on said plant material.

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 modifiying agent selected from the group consisting of: sulfamic acid; imidazole; N-alkylimidazole; taurine; a taurine derivative; a taurine-related compound; alkylsulfonic acid; arylsulfonic acid; triethanolamine; and combinations thereof; a metal oxide; and a peroxide;
for a period of time sufficient to remove substantially all (at least 80%) of the lignin present on said plant material.