31results about How to "Achieve the purpose of enrichment" patented technology

The invention discloses a method for extracting bromine from a bromine-containing solution. The method comprises the following steps: 1) acidifying the bromine-containing solution, and oxidizing; 2) carrying out extraction operation on the oxidized mixed solution in the step 1); 3) carrying out back extraction operation on the bromine-containing extraction organic phase obtained in the step 2); and 4) acidifying the back extraction solution obtained in the step 3) to precipitate bromine, thereby obtaining the simple substance bromine. By adopting the oxidization-extraction process, the method has the advantages of high extraction rate, simple equipment, low energy consumption and the like; the bromine extraction rate reaches 98% or above; and the extractant can be recovered.

The invention discloses a functionalized mesoporous molecular sieve and application of the functionalized mesoporous molecular sieve in recovering noble metal. The functionalized mesoporous molecular sieve is a silicon mesoporous molecular sieve grafted with amido or sulfydryl. The application of the functionalized mesoporous molecular sieve in recovering the noble metal comprises the following steps: processing a waste electronic circuit board to obtain metal dissolving solution; regulating the pH of the metal dissolving solution to about 1, and selectively absorbing palladium ions and/or platinum ions in the metal dissolving solution by using the functionalized mesoporous molecular sieve; regulating the pH of the metal dissolving solution to about 2.5, and selectively absorbing aurum ions in the metal dissolving solution by using the functionalized mesoporous molecular sieve; and respectively washing the molecular sieve carried with palladium ions and/or molecular sieve carried with platinum ions and the molecular sieve carried with aurum ions, thereby enabling the noble metal to enter the solution through desorption and simultaneously reactivating the molecular sieve. The method for recovering the noble metal has the advantages of simple process and high noble metal absorption rate, and is environment-friendly.

The invention provides a method for preparing bamboo salt through temperature program, and relates to a preparation method of bamboo salt. The invention aims at providing a method for preparing bamboo salt by adopting a stage temperature program. The preparation method comprises the following steps: mixing raw materials; performing three-stage temperature rise calcining; cooling and crystalizing; and grinding. The method for preparing bamboo salt through temperature program, the loss of mineral substances is few, energy resources and raw materials can be saved, and the product bamboo salt has uniform quality and is high in quality. The method is used in the field of preparation of bamboo salt.

The invention discloses a technological method for removing base metals in rhodium/iridium secondary replacement residues. The technological process comprises the following steps: adding sulfuric acid into the rhodium/iridium secondary replacement residues with certain solid-to-liquid ratio; heating and introducing oxygen to leach the base metals such as copper, nickel and the like; and after reaction, filtering and washing the filter residues to neutral so as to obtain rhodium/iridium raw material containing relatively high-grade noble metals such as rhodium, iridium and the like as well as low content of base metals. The technology realizes effective separation of noble metals and base metals in the rhodium/iridium secondary replacement residues so that the leaching rate of the base metals in the secondary replacement residues is greater than 90% and the enrichment of rhodium, iridium and other noble metals is nearly 10 times, and provides a new method for leaching and separating the base metals to enrich the noble metals rhodium and iridium.

The invention relates to a method of a dual-aqueous phase system for purifying a polygala root xanthonoid compound. The method comprises the following steps: performing an ultrasonic sound of polygala root by using 60% to 90% of ethanol or performing a reflux extraction by heating, and then filtering and concentrating, performing a macroporous adsorption resin column on a concentrate, eluting with 50% to 65% of ethanol, concentrating an eluate and then adding ammonium sulfate and the ethanol dual-aqueous phase system according to a proportion, heating and uniformly mixing to divide into an upper phase and a bottom phase; cooling the bottom phase and crystallizing to recovery ammonium sulfate crystals, taking the upper phase containing ethanol out and adding ethyl acetate, water and sodium chloride, uniformly mixing and taking the upper phase containing polygala root xanthonoid compound, reducing pressure and concentrating, performing a vacuum drying to obtain the polygala xanthonoid compound. According to the invention, the polygala root xanthonoid compound can be separated by a macroporous resin and purified by using a dual-aqueous phase extraction technology, which has simple operation and provides technical foundation to industrialization of the polygala root xanthonoid compound.

The invention discloses a peanut coat oligomeric proanthocyanidin, a preparation method and application thereof, belonging to the technical field of natural product preparation. The peanut coat oligomeric proanthocyanidin of the invention is obtained by microbial fermentation of the peanut coat, microwave assisted extraction and enrichment. The microorganism fermentation adopts one of Saccharomyces cerevisiae, Bacillus subtilis, Aspergillus niger and Aspergillus oryzae for complex microorganism fermentation. The mixed bacterial fermentation mode is adopted to degrade the proanthocyanidin of peanut coat, and the antioxidant activity of the obtained oligomeric proanthocyanidin is remarkably improved; The method for preparing oligomeric proanthocyanidins is easy to operate, saves time and high efficiency, and effectively improves the yield of oligomeric proanthocyanidins.

The application relates to the field of detection and analysis, and specifically relates to a method for measuring a content of spermidine in a safflower medicinal material and a method for enrichingspermidine. The method for measuring the content of the spermidine in the safflower medicinal material includes the following steps: using nylon 66 to adsorb the spermidine in a safflower medicinal material solution to obtain an enriched substance; dissolving the enriched substance by using a solvent and then performing filtering; and measuring the spermidine in a filtrate by using high performance liquid chromatography. The solvent includes a methanol aqueous solution having a volume fraction of 70% to 100% or an ethanol aqueous solution having a volume fraction of 70% to 100%. For the safflower medicinal material solution with a relatively low spermidine content (such as a safflower injection of about 0.15 [mu]g/mL), the nylon 66 has a function of enrichment and concentration, provides agood test condition for high performance liquid chromatography measurement, and provides a test method for a safflower-containing medicinal material with low concentration of spermidine.

The invention provides a portable device for taking water from air. The portable device comprises a container shell, a refrigerating device, an adsorption bed, and a condensing part; the container shell is provided with a ventilation opening capable of being opened or closed; the refrigerating device is arranged in the container shell; the adsorption bed is connected with the upper end of the refrigerating device and is used for adsorbing moisture in the air; the condensing part is connected with the lower end of the refrigerating device. According to the technical scheme of the portable device, a cold end is cooled through semiconductor refrigeration, mechanical moving parts such as a compressor are not needed, and the characteristics of being small in size and convenient to carry are achieved; on one hand, the steam content in the portable device can be improved, and on the other hand, the semiconductor hot end temperature can be reduced when steam volatilizes, then the semiconductor cold end temperature is reduced; therefore, the working efficiency of a semiconductor chip is improved, and the water yield is improved.

The invention relates to the field of biological removal of nitrogen, and aims to provide a enrichment method of microbes used for biologically removing high-concentration nitrogen-containing compounds. The method comprises the steps that a variety of practical anaerobic sludge from wastewater treatment plants is mixed, stirred, filtered and centrifuged, and then an inoculating source is obtained; chemical reagents are added into the inoculating source for inoculation in a microbial fuel cell, and then the microbial fuel cell runs; finally, the microbes used for biologically removing high-concentration nitrogen-containing compounds are enriched in the fuel cell. According to the enrichment method, the microbial fuel cell serves as a carrier, the nitrating and denitrifying microbes can stably grow and largely proliferated in a specific culture environment in a bioelectrochemistry mode, and are be absorbed on a cell electrode to form a dense membrane structure, and then the effect that the high-concentration nitrogen-containing compounds can be efficiently removed is achieved. In the method, a variety of practical wastewater is introduced, the microbial population is enriched, and the stability of the system is improved; the environment beneficial to the growth and propagation of the nitrating and denitrifying microbes is built, a selective effect is achieved on the microbial population, and the enrichment aim is achieved.

The invention discloses an IDE and NEP fusion gene containing a CBD (Collagen Binding Domain), a cell line, a liquid ECM (Extracellular Matrix) and an application. The IDE and NEP fusion gene containing the CBD (Collagen Binding Domain) comprises a CBD-IDE fusion gene and a CBD-NEP fusion gene, wherein the sequence of the CBD-IDE fusion gene is as shown in SEQID NO:1, and the sequence of the CBD-NEP fusion gene is as shown in SEQID NO:2. The cell line of the IDE and NEP fusion gene containing the CBD (Collagen Binding Domain) can stably express and secrete growth factors IDE and NEP and is combined to the extracellular matrix. The liquid ECM is synthesized by the cell line and is secreted outside cells. Through a gene technique, the IDE and NEP fusion gene carrying the CBD is constructed, then the expressed IDE protein and the expressed NEP protein are combined to collagen I of the ECM, the purpose of performing enriching on the ECM is achieved, and the purpose of treating Alzheimer 's Disease is realized.

The invention discloses a cell matrix material containing a gradient cell factor and a preparation method and application thereof. The preparation method comprises: constructing a recombinant vector of a coding gene containing a cell factor; integrating the recombinant vector to host cells to construct recombinant cells that may express the cell factor stably; subjecting the recombinant cells to medicated screening via biotin to obtain a stable transfection cell line; inoculating the stable transfection cell line to a substrate before culturing, and allowing distribution density of the recombinant cells cultured on the substrate to gradiently change in a specified direction; lyophilizing the recombinant cells attaching to the substrate to obtain the cell matrix material containing the gradient cell factor. The cell matrix material herein is capable of enriching SDF-1alpha, is originated from cells, and can minimize immunoreactions; the cell matrix material has SDF-1alpha factor gradient, so that the cell matrix material can simulate an in-vivo inflammatory micro-environment in vitro, and can also provide a support for cell attachment, so that stem cells can migrate to the inflammatory part.

The invention discloses a separation and purification method of atisine chloride atractydin monomers. The method includes: using an ethanol solution to perform heating extraction on rhizoma atractylodis for 2-3 times, combining filtrate and concentrating until no alcohol exists; B, extracting the concentrated solution with ethyl acetate for 2-4 times, and concentrating the ethyl acetate; C, adding silica gel into the ethyl acetate, and performing sample mixing and drying; D, loading the mixed sample into a mounted silica gel column for silica gel column chromatography, eluting with pure petroleum ether, and using a thin-layer chromatography point plate to confirm and collect production sections; E, concentrating the collected eluted production sections, freezing to separate out crystals, and using a Buchner funnel to fast filter the atisine chloride atractydin crystals while the crystals are cold, wherein HPLC detection shows that the purity of the crystals can reach above 99%, and the crystals can be used as the comparison products of content measuring. The separation and purification method has the advantages that the method is simple in process, short in production cycle, easy in cost control and suitable for industrial production, organic reagents can be recycled, and the obtained atisine chloride atractydin monomers are high in purity.

The invention relates to the field of tea processing and specifically relates to a processing method for jasmine white tea capable of enhancing the immunity. The processing method comprises the stepssuch as fresh leaf selection, mulberry extracting solution extraction, withering, accumulation, rolling, jasmine picking and maintaining, scenting, baking, sorting and packaging. The prepared jasminewhite tea is enriched in jasmine fragrance and has the characteristics of bland and sweet tastes of white tea, the heavy perfume of jasmine and human immunity enhancement.

The invention relates to a preparation method of floatable microalgae particles. The preparation method comprises the following steps: S1, mixing a microalgae cell suspension with a sodium alginate solution to prepare an initial mixed solution; and S2, dropwise adding the initial mixed solution into a calcium chloride solution to form hydrogel particles, continuously stirring, and carrying out a cross-linking curing reaction to obtain the floatable microalgae particles, wherein the density of the microalgae particles is regulated and controlled to be smaller than the density of a culture medium, so that the microalgae particles can float on the water surface. The microalgae particles can float on the water surface by adjusting the density of the microalgae particles, the prepared microalgae can grow and breed by fully utilizing illumination, carbon dioxide and nutrient substances such as carbon, nitrogen and phosphorus in water, and further biomass extraction is facilitated. Therefore, the energy consumption requirement of stirring or aeration can be reduced, full utilization of light energy is promoted, the defects caused by microalgae sedimentation are reduced, and meanwhile, a large amount of microalgae can be harvested conveniently.

The invention discloses a lamellar extracellular matrix (ECM) material enriched with a vascular endothelial growth factor a (VEGFa) as well as a preparation method and application thereof. The preparation method of the lamellar ECM material enriched with the VEGFa comprises the following steps: constructing a recombinant vector containing a collagenbinding domain-VEGFa (CBD-VEGFa) fusion gene; introducing the CBD-VEGFa fusion gene into host cells by using the recombinant vector so as to construct recombinant cells capable of expressing the VEGFa; inoculating a Petri dish with the recombinant cells so as to carry out cultivation; and then, freeze-drying the recombinant cells attached on the Petri dish so as to obtain the lamellar ECM material enriched with the VEGFa. According to the preparation method of the lamellar ECM material enriched with the VEGFa, VEGFa carrying the CBD is constructed; and then, the VEGFa protein is bound to collagen I of ECM so as to achieve the purpose of enriching the VEGFa protein on the ECM. The lamellar ECM material enriched with the VEGFa prepared by the preparation method can induce mesenchymal stem cells to differentiate into endothelial cells.