11results about How to "The process is simple and controllable" patented technology

The invention relates to a lactic acid bacteria composition and an application thereof in a low-temperature liquid biological feed, in particular to a lactic acid bacteria complex microbial inoculant suitable for a low-temperature environment (15-25 DEG C) and a fermentation process of the lactic acid bacteria complex microbial inoculant. The combination comprises pediococcus pentosaceus WP101 (the preservation number is CCTCC NO: M 20241055) and lactobacillus plantarum PC01 (the preservation number is CCTCC NO: M2022106), and the viable count of the combination is 25 million cfu / g feed according to the proportion of 1: 1. By optimizing the synergistic effect of strains and fermentation conditions, efficient fermentation in a low-temperature environment is realized, the content of lactic acid in the feed is remarkably increased, and growth of harmful microorganisms is inhibited. Animal experiments show that the fermented feed can reduce the diarrhea rate of piglets by 45.5% (Plt; 0.05), improve the daily gain of fattening pigs in the later period and the feed conversion rate, and reduce the loss of dry matters at the same time. The problem of energy consumption caused by the fact that traditional medium-temperature fermentation depends on heating and heat preservation is solved, technical support is provided for large-scale low-temperature liquid biological feed production, and economic and environmental benefits are achieved.

This invention relates to the field of microbial fermentation technology, specifically a method for preparing Rehmannia glutinosa through simultaneous fermentation with compound bacteria and a laxative effect. This method involves extracting four types of probiotics that meet national safety standards: Lactobacillus acidophilus, Bifidobacterium longum, Lactobacillus casei, and Saccharomyces cerevisiae, and then formulating a high-concentration compound bacterial agent according to the live bacteria ratio. The initial fermentation material is adjusted to a material-to-water ratio of 1:5 and a suitable pH is maintained. After autoclaving, the materials are inoculated with bacteria at a weight-to-volume ratio for biological culture. The entire system is placed in a 37°C environment for continuous constant-temperature static co-fermentation. Through specific enzymatic hydrolysis and metabolic pathways of multidimensional bacterial communities, the absolute content of the core active ingredient catalpol and soluble dietary fiber in the final product is significantly increased. This bio-fermentation process effectively eliminates the potential risk of spleen and stomach irritation and damage from traditional Chinese medicinal materials. The resulting dry powder raw material can be widely and safely used in the preparation of microecological functional foods or pharmaceutical preparations targeting constipation symptoms caused by intestinal dryness and fluid deficiency.

The invention belongs to the technical field of oil-water mixture separation materials, and particularly relates to a submerged super-amphiphobic oil-water separation material as well as a preparation method and application thereof. The preparation method of the submerged super-amphiphobic oil-water separation material comprises the following steps: (1) carrying out photoresist removal, acidification and vacuum plasma pretreatment on carbon fibers; (2) growing Co (OH) 2 nanocrystals on the surfaces of the pretreated carbon fibers in a coating manner, and carrying out calcination treatment to convert Co (OH) 2 into Co3O4; and (3) converting Co3O4 on the surface of the carbon fiber obtained in the step (2) into CoS2 in situ under the action of a vulcanizing agent to obtain the submerged super-amphiphobic oil-water separation material. The method has the beneficial effects that the material prepared by the method has excellent submerged super-amphiphobic property, shows super-oleophobicity underwater and super-hydrophobicity under oil, can efficiently separate light oil / water and heavy oil / water mixtures, and has the separation efficiency of 90% or above. The method has a wide application prospect in the field of complex oil-water separation.

This invention provides a method for preparing a vanadium-titanium catalyst repair agent and a method for repairing vanadium-titanium catalysts using the agent. The preparation method of the repair agent is as follows: A seed mother liquor from the Bayer process for alumina production is added to lime slurry and stirred to obtain a filter cake and filtrate; the filter cake is added to a mixed solution of organic acid and ammonium salt and stirred to obtain an active component replenishment solution; aluminum hydroxide slurry from the Bayer process for alumina production is added to a citric acid solution and stirred to obtain an aluminum sol strength repair solution; the active component replenishment solution and the aluminum sol strength repair solution are then mixed to obtain the final product. The repair method is as follows: the vanadium-titanium catalyst to be repaired is immersed in the repair agent, dried, and calcined to obtain the final product. This invention cleverly incorporates the Bayer process to obtain the key materials required for the repair process, thereby achieving the repair of vanadium-titanium catalysts; after repair, the radial and axial compressive strength, wear resistance, and catalytic activity of the catalyst are all significantly improved.

This invention discloses a method for preparing Ganoderma lucidum and jujube seed compound freeze-dried flash release tablets by enzymatic hydrolysis and fermentation, which relates to the field of traditional Chinese medicine preparation technology. The method includes the following steps: (1) Raw material pretreatment: Jujube seed is crushed and mixed with citrate buffer to obtain jujube seed slurry; Ganoderma lucidum fruiting body is ultra-finely pulverized and mixed with cut lily petals to obtain mixed raw materials. This invention uses a specific ratio of compound enzymes (cellulase, pectinase, β-glucanase) in an optimized acidic environment for enzymatic hydrolysis, which can efficiently and selectively destroy the plant cell walls of jujube seed, Ganoderma lucidum and lily, and fully release the active ingredients in the cells; the subsequent fermentation of Lactobacillus plantarum can further decompose the substrate and may produce new beneficial metabolites, forming a synergistic biotransformation, which greatly improves the extraction rate of total active ingredients and product value.

The invention provides a preparation method of nano cobalt hydroxide, belongs to the technical field of preparation of lithium ion battery materials, and solves the problems that an existing nano cobalt hydroxide preparation process is complex, high in requirements for production equipment and unfavorable for large-scale product.The preparation method comprises the steps that a solution A and a solution B are prepared according to three conditions, and a synthetic reaction and aging are conducted after preparation; after aging is finished, washing the prepared cobalt hydroxide slurry; the washed cobalt hydroxide material is dried; and crushing the dried cobalt hydroxide to obtain a nanoscale cobalt hydroxide product. The prepared nanoscale cobalt hydroxide is small in specific surface area, does not need to add a dispersing agent, is simple in raw material and process, is easy to wash, and is easy for industrial production.

This application provides a high-hydrogen-storage-capacity AB2-type hydrogen storage alloy that can be activated at room temperature, its preparation method, and its application. The chemical composition of the AB2-type hydrogen storage alloy is Ti. a Zr 1‑a Mn b Cr c Fe d RE f Wherein, 0.70≤a≤0.90, 0.7≤b≤1.3, 0.7≤c≤1.0, 0<d≤0.3, 1.7≤b+c+d<2.0, 0<f≤0.3; RE represents a combination of two or more rare earth elements. This application, through the synergistic addition of at least two rare earth elements and precise control of the content of each element in the alloy, achieves high hydrogen storage capacity while realizing rapid activation at room temperature, exhibiting moderate hydrogen absorption / desorption plateau pressure and excellent cycle stability. The preparation method provided in this application is simple and easy to industrialize. The hydrogen storage alloy provided in this application can be widely used in hydrogen energy storage, transportation, and utilization, and has broad market application prospects.

The invention belongs to the technical field of building materials, and discloses low-carbon low-shrinkage lightweight concrete prepared on the basis of multi-source industrial solid wastes and a preparation method of the low-carbon low-shrinkage lightweight concrete. The low-carbon low-shrinkage lightweight concrete prepared on the basis of the multi-source industrial solid wastes is prepared from the following raw materials in parts by weight: 250 to 640 parts of cement, 150 to 250 parts of silica fume, 190 to 210 parts of fly ash microspheres, 260 to 650 parts of phosphorus slag, 1100 to 1300 parts of quartz sand, 10 to 15 parts of a de-foaming agent, 12 to 20 parts of a water reducing agent, 200 to 300 parts of water and 120 to 200 parts of fibers. According to the low-carbon low-shrinkage lightweight concrete prepared on the basis of the multi-source industrial solid waste, the synergistic utilization efficiency of the multi-source industrial solid waste can be remarkably improved, and high-value conversion of solid waste recycling is promoted; the comprehensive performance of low carbon, light weight and high strength can be considered, and the multiple performance requirements of modern structural materials are met.

The invention discloses a PESA / N-CQDs scale inhibitor and a preparation method and application thereof.The preparation method comprises the steps that citric acid, urea and a polyepoxysuccinic acid salt solution serve as raw materials, nitrogen-doped carbon quantum dots are prepared through a hydrothermal method (150-170 DEG C, 3-5 hours), then polyepoxysuccinic acid is obtained through precipitation and drying treatment, and the PESA / N-CQDs scale inhibitor is obtained. And finally, mixing the nitrogen-doped carbon quantum dots with polyepoxysuccinic acid, adjusting the pH value to 7-8, stirring and reacting for 20-28 hours at the temperature of 75-85 DEG C, and precipitating, washing and drying to obtain the PESA / N-CQDs scale inhibitor. The method is simple, convenient and controllable in process, environment-friendly, good in product dispersity, capable of showing excellent scale inhibition efficiency after being added in a trace amount, suitable for scale inhibition treatment of various scale-containing systems such as industrial circulating water and oilfield production water, and good in application prospect.

The application belongs to the technical field of high polymer materials, and discloses a fluorine-free high and low temperature resistant organic silicon modified polyurethane elastomer as well as a preparation method and application thereof. The elastomer is prepared from an organic silicon modified polyurethane base and a peroxide compound solution, the mass of the peroxide compound solution is 1-5% of the mass of the organic silicon modified polyurethane base; the preparation raw materials of the organic silicon modified polyurethane base include 4,4'-dicyclohexyl methane diisocyanate, hydroxyl-terminated polybutadiene, monohydroxy polydimethylsiloxane, N1-(3-aminopropyl)-N1-dodecylpropane-1,3-diamine and 3-glycidyl ether oxypropyl triethoxysilane; the peroxide compound solution is prepared by dissolving benzoyl peroxide and dicumyl peroxide with a mass ratio of 1:0.5-1:2 in an organic solvent, stirring at room temperature until completely dissolved, and then preparing a homogeneous peroxide solution with a mass fraction of 5-20%.

The invention discloses a preparation method for synthesizing a high-temperature-resistant viscous material. The high-temperature-resistant viscous material is mainly composed of a poly (oxazolidinone) derivative (POL), an AB type hydrophilic-hydrophobic block copolymer, a nano reinforcement, microcapsules and the like. The preparation method comprises the following steps: ultrasonically dispersing the POL, the copolymer and the nano reinforcement in NMP, adding the microcapsule to prepare a pre-glue solution, carrying out argon plasma treatment on a base material, then coating, and carrying out stepped curing to trigger cyclization. The material has excellent high-temperature tolerance and self-repairing capability, is suitable for bonding metal or ceramic structures in extreme environments such as aerospace, nuclear power and the like, and can realize long-term stable bonding and self-repairing in a range of 200-400 DEG C.