5results about How to "Add binding sites" patented technology

The present invention relates to a process for extracting rosemary essential oil, and the process for extracting rosemary essential oil comprises the following steps: S1, cutting, crushing and fermenting rosemary to obtain pretreated rosemary; S2, mixing the pretreated rosemary with modified activated carbon, introducing humid air, and standing for adsorption; S3, desorbing the modified activated carbon to obtain rosemary essential oil; wherein the modified activated carbon is cellulose or polyacrylic acid modified activated carbon. The present invention first ferments rosemary, then uses modified activated carbon to adsorb essential oil in rosemary, and finally obtains essential oil through desorption. The essential oil in rosemary branches and leaves can be efficiently separated by combining multiple processes, effectively improving the yield and purity of the essential oil, and solving the problems existing in the prior art.

The invention provides a covalent organic framework membrane for waste acid recovery and power generation as well as a preparation method and application thereof, and relates to the technical field of wastewater separation and recovery. The covalent organic framework membrane is prepared from a PaTp-TMC membrane formed on the surface of a base material by using p-phenylenediamine, trialdehyde phloroglucinol and trimesoyl chloride, the covalent organic framework membrane is high in selectivity, ultrafast transmission of H < + > and efficient interception of other ions can be realized, two processes of waste acid recovery and power generation (osmotic energy conversion) can be completed at the same time, and the covalent organic framework membrane has good application prospects. And the efficiency of process application is greatly improved.

The invention discloses a process and application of first extracting lithium and then extracting nickel, cobalt and manganese, which belongs to the technical field of waste lithium battery recycling, and comprises the following steps: mixing pretreated positive electrode powder and organic acid solution, stirring, adding composite ion exchange resin, filtering, obtaining solid A and water extract, and obtaining lithium carbonate by post-treatment of solid A; mixing the water extract with composite microbial extractant, filtering, obtaining solid B, and obtaining nickel, cobalt and manganese salt by desorption treatment of solid B. The modified aluminum-based adsorbent is embedded in the cross-linked network structure to form a macroporous adsorption resin, which gives the macroporous adsorption resin a directional adsorption function for lithium ions, thereby first separating lithium ions from waste lithium batteries; the composite strain is adsorbed into the interior of porous carbon, and the remaining cobalt ions, manganese ions and nickel ions in the positive electrode powder water extract can be adsorbed into the interior of the porous carbon, avoiding the influence of other impurities, and improving the extraction rate of nickel, cobalt and manganese.

The application belongs to the technical field of fertilizers, and provides a preparation method of modified fulvic acid and application of the modified fulvic acid in fertilizers.The preparation method of the modified fulvic acid comprises the following steps: step 1, dissolving fulvic acid in deionized water, ultrasonic activation, after reaction, drying to obtain activated fulvic acid; step 2, dissolving the activated fulvic acid in a sodium hydroxide solution, heating to 40-45 DEG C for 10-15 min, after cooling, adjusting pH, adding a polymer monomer and an initiator, heating to 40-45 DEG C for 3-3.5 h, and drying to obtain modified fulvic acid. The application introduces new functional groups, such as amide groups, into fulvic acid molecules through chemical reactions, so as to enhance the chelating capacity or adsorption performance of the fulvic acid on specific nutrient elements, thereby effectively preventing the fixation of the elements in soil, and improving the absorption efficiency of the elements by plants.

The application belongs to the field of engineering technology and provides a preparation method of a nucleic acid separation device. The preparation method of the application prepares a hydrogel nucleic acid adsorption device through a photo-initiated radical polymerization reaction, avoiding the cumbersome limitations of traditional polymerization reactions which need to be carried out under anaerobic conditions. The preparation method is simple and fast, and does not depend on professional and precise instruments. The raw materials are cheap and easy to obtain. The method can efficiently load silica particles, effectively combine the plasticity of the hydrogel with the high specific surface area of the silica particles and the strong binding capacity of the nucleic acid, and further obtain a handheld nucleic acid extraction device which can change shape, size and quantity at any time according to application requirements, has a high specific surface area and excellent nucleic acid extraction performance. Compared with traditional processes, the preparation process is simpler, the application range is wider, and the application requirements of low resource environment are greatly met, and the application prospect in the field of outdoor and clinical nucleic acid extraction technology is broad.