36results about How to "Realize value-added utilization" patented technology

The invention discloses protease extracted by using squid viscera as raw materials and an extraction method and an application thereof. According to the invention, fresh or freezed squid viscera are used as raw materials; the squid viscera are crushed, and extracted by water or a table salt solution; the concentration of the table salt solution, the solid-liquid ratio, the temperature, and the extraction time are controlled during the extraction so as to obtain a high protease recovery rate; then protein is removed by methods of isoelectric point precipitation and flocculant addition precipitation so as to increase the protease purity; finally a liquid squid viscera protease enzyme preparation is obtained by concentration, stabilizer and preservative addition, and the like; or a solid squid viscera protease preparation is obtained by filler addition, drying and crushing. The invention realizes the application of squid viscera with increased value, increases the added value of fishery production, and reduces environment pollution caused by squid product production; the prepared squid protease can be used as an enzyme preparation for hydrolyzing various food protein; and the varietyof commercial protease is increased.

The invention discloses a treatment method of wet method zinc smelting by-products, which comprises the following steps: firstly, using a sulfuric acid solution for leaching heat treated copper-cadmium slag or copper-rich slag; then, using an organic solvent extraction method for extracting copper and cadmium at the same time from leach liquor to obtain copper-cadmium-rich organic phase zinc-sulfate-containing faffinate; using sulphuric acid for carrying out back extraction on the copper-cadmium-rich organic phase to obtain a mixed solution of copper sulfate and cadmium sulfate; then, adding a proper amount of organic precipitant into the mixed solution to obtain a mixture of organic precipitates of the copper and the cadmium; separating and washing the copper and cadmium precipitates; and adding a reducing agent solution for carrying out reduction reaction to respectively obtain sheet type copper powder and organic cadmium products. The invention realizes the value adding utilizationof wet method zinc smelting by-products, reduces the treatment cost of the zinc smelting by-products, and reaches the goals of discharge reduction and yield improvement.

The invention discloses a preparation method of a blast furnace slag-based composite phase-change heat storage material. The preparation method comprises the following steps: performing ball-milling pretreatment to a blast furnace slag raw material, uniformly mixing with an inorganic salt phase-change material and an adhesive, and pressing into a blank; sintering the blank in an air atmosphere to obtain the blast furnace slag-based composite phase-change heat storage material. The blast furnace slag has an excellent porous characteristic and can sufficiently adsorb the phase-change material, so that the formed composite phase-change heat storage material is uniform in appearance and stable in shape, does not seep out the phase-change material in the phase change process and can maintain the original outer shape; after multiple thermal cycles, the composite phase-change heat storage material still has good thermal stability, phase change latent heat and phase change temperature stability; the working temperature range of the composite phase-change heat storage material can be extended to a temperature of 300-850 DEG C according to different types of phase-change materials.

The invention discloses an edible mushroom bag based on a walnut shell / dreg and a preparation method and application thereof. The mushroom bag is prepared from the following components in parts by mass: 100 parts of walnut shell / dreg complex, 0.1 to 0.5 part of urea, 0.1 to 1 part of superphosphate, 1 to 2 parts of gypsum and 150 to 160 parts of water; the walnut shell / dreg complex is prepared from the following components in percentage by mass: 30% to 50% of walnut shell, 30% to 50% of walnut dreg, and 10% to 20% of maize straw, and the total mass percentage of the components is 100%. The walnut shell and the walnut dreg, which are by-products in production of walnut milk, are used for comprehensively developing a novel edible mushroom bag, so that the value-added exploitation of the by-products is realized, and the resources are efficiently converted; moreover, the novel mushroom bag is better in substrate nutrition and permeability, thereby facilitating mycelial growth, increasing the fruiting rate, shortening fruiting time, and significantly shortening the production cycle.

The invention discloses a method for preparing micro-fibre corn stalks by a 1-butyl-3-methimidazole chloride-LiCl-DMF (dimethylformamide) system. The method comprises the following steps: crushing and drying corn stalks; performing high-shear sulphonating treatment at a certain temperature by taking a 1-butyl-3-methimidazole chloride-LiCl-DMF compound system as a solvent and adding a pyridine sulphur trioxide compound; filtering, washing and performing vacuum drying on a material which is subjected to the sulphonating treatment to obtain the micro-fibre corn stalks with high sulphonation degree. According to the method, the corn stalk fibres can be effectively swelled and free hydroxyls can be released by combining 1-butyl-3-methimidazole chloride and LiCl, so that the cohesive force of a raw material is weakened, and the sulphonating modifying efficiency of sulphur trioxide-pyridine complex is improved. By the method, the degradation of hemicellulose and lignin components of the corn stalks can be reduced remarkably; a modifying process is simple and feasible; the modified products of micro-fibres are high in yield and sulphonation degree and large in specific surface area; value-added utilization of agricultural waste is realized; moreover, a modifying liquid is easy to recycle and utilize.

The invention discloses a cleaning process for value adding utilization of nickel-contained pyrite burning slag. The process firstly performs efficient leaching for the nickel-contained pyrite burning slag to obtain leaching liquid and leaching slag containing iron and nickel; and then, the sacrifice anode electric reinforcing reduction purification is performed for the leaching liquid, so that impurity elements in the leaching liquid are deeply reduced into reduction purification slag through an electric reinforcing reduction method. The process realizes the value adding utilization of the pyrite burning slag. A new technological process is a closed cycle, and a leaching agent can be recycled, so that the cleaning process preferably solves such problems as heavy pollution and low metal recovery rate generally generated in a traditional pyrite burning slag treatment process, is suitable for treating other various wastes containing iron and nickel, and has the prominent advantages of high adaptability to raw materials, simple technological process, high recovery rate of valuable elements, cleanness and environmental protection.

The invention provides a preparation method of methylamine, which is to prepare methylamine by amine methylation reaction; in the amine methylation reaction, the catalyst is dodecyldimethylamine caprolactone . The invention effectively reduces the additives required for the reaction, and is beneficial to simplify the post-processing process after the reaction is completed.

The invention discloses a method for preparing micro-fibre corn stalks by a 1-butyl-3-methimidazole chloride-LiBr-DMF (dimethylformamide) system. The method comprises the following steps: crushing and drying corn stalks; performing high-shear sulphonating treatment at a certain temperature by taking a 1-butyl-3-methimidazole chloride-LiBr-DMF compound system as a solvent and adding a pyridine sulphur trioxide compound; filtering, washing and performing vacuum drying on a material which is subjected to the sulphonating treatment, so as to obtain the micro-fibre corn stalks with high sulphonation degree. According to the method, the corn stalk fibres can be effectively swelled and free hydroxyls can be released by combining 1-butyl-3-methimidazole chloride with LiBr, so that the cohesive force of a raw material is weakened, and the sulphonating modifying efficiency of sulphur trioxide-pyridine complex is improved. According to the method, the degradation of hemicellulose and lignin components of the corn stalks can be reduced remarkably; a modifying process is simple and feasible; the modified products of micro-fibres are high in yield and sulphonation degree and large in specific surface area; value-added utilization of agricultural waste is realized; moreover, a modifying liquid is easy to recycle and utilize.

The invention discloses a method for enriching and extracting gallium from alumina seed separation mother liquor based on biomass materials. The method includes: using biomass materials as adsorbents, and the biomass materials are persimmon skins modified by ion imprinting technology The obtained persimmon skin-based imprinted composite material; the persimmon skin-based imprinted composite material is loaded into a two-stage dynamic adsorption column, and the alumina seed separation mother liquor is extracted through the gallium-extracted dynamic adsorption column 1 and the gallium-enriched dynamic adsorption column 2 respectively. Gallium-rich electrolytic stock solution is obtained by selective adsorption and desorption of gallium. In the present invention, waste biomass persimmon skin is used as the material, and the adsorbent is obtained through surface ion imprinting modification, and the gallium ion-specific recognition sites on the surface of the adsorbent are used to realize the selective extraction of gallium in the mother liquor of alumina species, which has the advantages of Gallium enrichment has the advantages of low cost and high efficiency, and has good economic and environmental benefits.