117results about How to "High lignin content" patented technology

The invention provides a method to remove black liquor by a presser from the high rigidity pulp prepared by cooling the grass materials. Send the cooked pulp which has the rigidity of potassium permanganate value 16-28 (equals to karber value 24-50) into the inlet of the presser for pressing. The pulp discharges from the outlet after removing the black liquor. The invention aims at pressing the low concentration and high rigidity pulp prepared by cooling the grass materials to remove the black liquor. It prepares for the necessary washing and bleaching steps during the processing, advances the bleaching effect and saves the necessary chemicals for bleaching, which is an economic and environmental protection method.

The invention relates to composite components and methods of producing composite components. In yet another embodiment, the present invention relates to a method of producing a composite component using anaerobically digested biomass. In still yet another embodiment, the method further comprises using liquid effluent from the digester. In still yet another embodiment, the method further comprises wet-mat forming and cold pressing the anaerobically digested biomass and wet-mat drying under heat and pressure.

The invention discloses a production process of an organic and inorganic compound fertilizer; the organic and inorganic compound fertilizer is prepared by mixing straw with a phosphatic fertilizer, a nitrogenous fertilizer, livestock manure, an inorganic salt, an efficient rotten bacterium agent and a conditioner for fermentation reaction to obtain organic matter, mixing the organic matter with an inorganic fertilizer produced by mixing urea, monoammonium phosphate and potassium chloride; the produced inorganic organic compound fertilizer is simple in production process, easy to operate, suitable for all kinds of vegetables, fruit trees, flowers, and the like, and quick in effect, can enable products to come into the market earlier, is better in quality, and is a pure natural green fertilizer with high quality, high content and high utilization rate.

The invention discloses a method for preparing magnetic biological carbon by utilizing traditional Chinese medicine residues, the magnetic biological carbon and application thereof and belongs to the field of biomass resource utilization. The method comprises the following steps: after impregnation pretreatment of the traditional Chinese medicine residues and sodium carbonate, performing ion salt impregnation and high-temperature anaerobic activation, washing, drying and the like to obtain the magnetic biological carbon. The method has the characteristics of being simple in production process, highly available in raw materials, high in product solid-liquid efficiency and the like. The method disclosed by the invention realizes the resource of the traditional Chinese medicine residues, has great significances in expanding the use of wastes extracted from the traditional Chinese medicines and expanding the source and the application scope of biological carbon adsorbents and can be widely applied to the water treatment field, thereby having good economic benefits and social benefits.

The invention provides a biomass pellet fuel and a preparation method thereof. The biomass pellet fuel comprises the following components, by weight: herbivorous animal manure, agricultural waste, illegal cooking oil, calcium oxide, calcium sulfate, propionic acid, kaolin, diatomaceous earth, bentonite, calcium peroxide, aluminum hydroxide, propylene glycol, polyvinyl alcohol, an oxygenate, an antiknock agent, a combustion improver, and a bulking agent. The biomass pellet fuel has low water content and high lignin content. According to the invention, a large amount of agricultural waste and animal manure are utilized. Air pollution caused by the activities of burning agricultural waste is greatly reduced, and animal manure can be effectively treated, such that recycling application value is improved, and the fuel is more environment-friendly. Compared to conventional biomass pellet fuels, the biomass pellet fuel provided by the invention has the advantages of high combustion value, long combustion time, no harmful gas emission after combustion, and no corrosion to combustion equipment.

The present invention provides biomass fuel and a preparation method therefor. The biomass fuel comprises the following ingredients in parts by weight: lignin, agricultural wastes, sea mud, sepiolite flocking, aluminum oxide, silane coupling agents, ammonium chloride, dimethyl silicone oil, yeast extract powder, capsaicin, di-tert-butyl hydroquinone, oxygenates, a shock-resistant and antiknock agent, a combustion improver, and a bulking agent. The biomass fuel has low moisture content and high lignin content. With the use of a large amount of agricultural wastes, air pollution caused by burning agricultural wastes and other activities is greatly reduced, and recycling utilization value is improved, so that the biomass fuel is more environmentally friendly. Compared with conventional biomass fuel particles, the biomass fuel provided by the present invention has a high fuel value, a long burning time, no discharge of harmful gas after combustion, and no corrosion on a combustion device.

The invention provides methods for decreasing lignin content and for increasing the level of fermentable carbohydrates in plants by down-regulation of the NST transcription factor. Nucleic acid constructs for down-regulation of NST are described. Transgenic plants are provided that comprise reduced lignin content. Plants described herein may be used, for example, as improved biofuel feedstock and as highly digestible forage crops. Methods for processing plant tissue and for producing ethanol by utilizing such plants are also provided.

The invention relates to biomass particle fuel which comprises the following components in parts by weight: 40-70 parts of animal waste, 50-80 parts of biomass, 20-35 parts of gangue powder, 12-20 parts of bulking agent and 20-28 parts of combustion improver. The biomass particle fuel is low in water content and high in lignin content; and the abundant animal waste and the abundant biomass are utilized, so that pollution of activities such as animal waste incineration to air is greatly reduced, the biomass is effectively treated, a recycling value is increased, and the biomass particle fuel ismore environment-friendly. Compared with the conventional biomass particle fuel, the biomass particle fuel is high in combustion value and long in combustion time, has no harmful gas discharge aftercombustion, and cannot corrode combustion equipment.

A process is defined for the continuous steam pretreatment and fractionation of bagasse to produce a concentrated cellulose solid stream that is sensitive to enzymatic hydrolysis. Valuable chemicals are recovered by fractionating the liquid and vapor stream composed of hydrolysis and degradation products of the hemicellulose. Cellulosic derived glucose is produced for fermentation to biofuels. A hemicellulose concentrate is recovered that can be converted to value added products including ethanol.

The invention relates to an environment-friendly flame-retardant non-adhesive fiberboard of crop straw and a preparation method thereof. The fiberboard is prepared by the following steps that 1 ) wheat straw and sorghum straw are taken to be cut off correspondingly, and the wheat straw and the sorghum straw are soaked in water to obtain a softened material; 2 ) steam explosion is correspondingly carried out on the softened material to obtain wheat straw fiber and sorghum straw fiber; 3 ) nano calcium carbonate, nano zinc oxide are mixed with nano copper oxide, and modifying is carried out toobtain a modified additive A; nano zinc borate, the nano zinc oxide are mixed with the nano copper oxide, and modifying is carried out to obtain a modified additive B; 4 ) the wheat straw fiber and the sorghum straw fiber are mixed with the modified additive A to obtain a core layer mixture; the wheat straw fiber is mixed with the modified additive B to obtain a surface layer mixture; and 5 ) thecore layer mixture is taken as a core layer, the surface layer mixture is taken as a surface layer to be laid and pre-pressed to obtain a slab, after hot-pressing forming and post-treatment are carried out, the environment-friendly flame-retardant non-adhesive fiberboard is obtained. The fiberboard has no formaldehyde release and has good mechanical property, good anti-water, moisture-proof, anti-corrosion and antibacterial properties; and good in fireproof and flame-retardant effects, and suitable for popularization and application.

The invention discloses a pear transcription factor PbrMYB169 and an application thereof. The pear transcription factor PbrMYB169 is separated from Dangshan crisp pears, and has MYB family member PbrMYB169 genes capable of adjusting and controlling development of sclereid of pear fruits, the nucleotide sequence of the pear transcription factor PbrMYB169 is as shown in SEQID No.1, and the coding amino acid sequence of the pear transcription factor PbrMYB169 is as shown in a sequence table SEQID No.2. Through an agrobacterium tumefaciens mediated heredity conversion method, PbrMYB169 transcription factors are converted into arabidopsis thaliana, and transgenic plants are obtained; biological function verification indicates that the PbrMYB169 gene cloned through the pear transcription factorPbrMYB169 has the function of promoting synthesis of arabidopsis thaliana inflorescence stem lignin, besides, the PbrMYB169 transcription factor has the advantage of being capable of adjusting and controlling a plurality of genes, and an efficient way is provided for molecular breeding. New genetic resources are provided for reduction of molecular breeding of synthesis of organism lignin, new heredity resources are provided for implementing green agriculture, and reduction of the agriculture cost and realization of an environmental-friendly purpose can be facilitated through development and utilization of the heredity resources.

The invention relates to a preparation and curing method of sodium alginate-lignin composite gel beads. The method comprises the following steps of mixing a sodium alginate solution with an organic solution of lignin, and dropwisely adding the mixed solution into a calcium chloride or zinc chloride solution by using an injector to obtain the composite gel beads; and carrying out coating and curingtreatment on the composite gel beads by using the sodium alginate solution and the calcium chloride solution. According to the method, ethylene glycol and glycerin which are low in toxicity and smallin pollution are used as solvents to dissolve the lignin, the lignin can be fully dissolved and can also be used as a plasticizer when sodium alginate-lignin is gelatinized, and other toxic and harmful cross-linking agents are prevented from being used. The prepared composite gel beads have high lignin content, high strength, regular shape and uniform particle size, and a certain microsphere formcan be still maintained after further curing treatment. The method is mild in reaction condition, simple, easy to operate and low in manufacturing cost, and a simple and effective storage way is provided for further comprehensive application of the lignin composite gel beads.