68results about How to "Good regeneration performance" patented technology

The invention provides a high-silicon ZSM-5 molecular sieve adsorbent for adsorbing toluene and a preparation method thereof, and belongs to the technical field of adsorbents, the preparation method comprises the following steps: S1, preparing a uniform sol from a silicon source I, a reaction aid I and water according to a molar ratio of 1: 0.27: 37, placing in a hydrothermal kettle, crystallizing at 120 DEG C for 48 hours, filtering, washing, and drying to obtain Silicate-1 seed crystal; s2, preparing a molecular sieve mother solution from a silicon source II, an aluminum source, a reaction aid II and water according to a molar ratio of 100: 0.083: 20: 4000, adding Silicate-1 seed crystal accounting for 3wt% of the molecular sieve mother solution, uniformly mixing, putting into a hydrothermal kettle, reacting at 100-160 DEG C for 6-24 hours, filtering, washing, drying, and roasting at 550 DEG C for 6 hours to obtain a high-silicon ZSM-5 molecular sieve; and S3, screening the high-silicon ZSM-5 molecular sieve, and drying in a muffle furnace at 400 DEG C for 4 hours to obtain the high-silicon ZSM-5 molecular sieve adsorbent for adsorbing toluene. The methylbenzene adsorption capacity of the prepared adsorbent can be remarkably improved.

The invention discloses a recombinant XVII type collagen-thymosin beta4 fusion protein as well as a preparation method and application thereof, the recombinant XVII type collagen-thymosin beta4 fusion protein is a fragment of human XVII type collagen and a thymosin beta4 protein sequence, and the amino acid sequence of the recombinant XVII type collagen-thymosin beta4 fusion protein is shown as SEQ ID NO: 1. The recombinant XVII type collagen-thymosin beta4 fusion protein disclosed by the invention has good safety, can regulate and regulate intercellular signal transduction, and has good effects of promoting hair follicle cell proliferation and promoting hair regeneration.

The invention provides a low-molecular-weight polymeric extractant and a method for treating acidic wastewater containing copper and nickel through the low-molecular-weight polymeric extractant, and belongs to the field of wastewater purification. A polymeric molecular skeleton of the extractant is low-molecular-weight polymeric isosorbide terephthalate, and the molecular skeleton structure, the functional group type and the distribution of functional sites are regulated and controlled, so that the extraction efficiency is improved. And through the synergistic effect of a space-specific molecular skeleton and chelating extraction functionalized functional groups, the effect of selectively chelating metal ions with specific sizes is achieved, and targeted trapping of target metal is achieved. The low-molecular-weight polymeric extractant expands the variety of extractants, and provides a new solution for enrichment and purification of heavy metals in wastewater. Meanwhile, the extraction agent has good service cycle and regeneration capacity, and the molecular skeleton of the extraction agent is a low-molecular-weight polymer, so that a polymeric compound is very difficult to enter a water phase through transfer between phase interfaces, and the problem of secondary pollution caused by the fact that a traditional extraction agent is possibly dissolved in the water phase is effectively avoided.

The invention relates to the technical field of desulfurization and decarburization agents, and particularly discloses a preparation method of a desulfurization and decarburization agent. The invention relates to a preparation method of a desulfurization and decarburization agent, which comprises the following steps of: polymerizing 3, 3-dimethyl quinoline-2, 4 (1H, 3H)-diketone and triptycene serving as monomers through a hydroxyalkylation reaction under an acidic condition to obtain an amorphous multi-nanopore polymer 1, and then performing Hofmann alkylation reaction on iodoethane and amino for ionization to obtain the desulfurization and decarburization agent. Finally, the desulfurization and decarbonization agent is obtained through anion exchange with sodium hydroxide, and the obtained desulfurization and decarbonization agent has the advantages of being excellent in sulfur dioxide selectivity, high in sulfur dioxide removal rate and good in carbon dioxide co-adsorption rate and regeneration performance.

The invention discloses a prebaked anode carbon capture system for industrial electrolytic aluminum and an operation method, and belongs to the field of carbon capture, the prebaked anode carbon capture system comprises a combined power generation device for supplying power to equipment, a flue gas treatment device and a carbon capture device; the flue gas treatment device comprises a roasting furnace and a calcining furnace, flue gas generated by the flue gas treatment device is subjected to multi-stage treatment to provide raw materials for the carbon capture device, and heat generated by the flue gas treatment device is subjected to multi-stage recycling to provide reaction conditions for flue gas treatment and drive a steam turbine to generate power; the carbon capture device comprises an absorption tower and a motor boiler, and the absorption tower receives flue gas and completes carbon capture under the assistance of steam. A series of efficient flue gas treatment units are adopted, and the purity of carbon dioxide is remarkably improved. In addition, the multi-stage regenerative cycle technology is designed, and the comprehensive utilization efficiency of heat energy is improved. And by adopting a steam-assisted vacuum temperature swing adsorption technology, the dynamic adsorption capacity of gas is enhanced, and the cycle service life of an absorbent is prolonged, so that the economical efficiency and the operating performance of the system are optimized.

The invention discloses a fermented caffeine eye cream composition. Comprising the following components in parts by weight: 30 to 80 parts of a fermentation composition, 1 to 5 parts of caffeine, 0.1 to 0.3 part of hydroxypropyl tetrahydropyrantriol, 0.5 to 2 parts of nicotinamide, 0.1 to 1 part of squalane, 0.01 to 0.5 part of a ceramide composition, 0.005 to 0.05 part of dipeptide diaminobutyryl benzyl amide diacetate, 0.005 to 0.05 part of a polypeptide composition, 0.01 to 0.5 part of carnosine, 0.01 to 0.5 part of tetrahydromethylpyrimidine carboxylic acid and 3 to 12 parts of a plant extract. The invention also discloses an eye cream containing the eye cream composition. The fermented caffeine eye cream composition provided by the invention can effectively smooth the skin surface, and is beneficial to preventing and comforting aging, improving skin elasticity, improving dark circles, relieving edema and removing under-eye puffiness.

The invention discloses a preparation method of low-freezing-point dipropylene glycol, which comprises the following steps: carrying out condensation reaction on propylene oxide and propylene glycol by using a solid acid catalyst, and carrying out post-treatment to obtain the low-freezing-point dipropylene glycol. The sulfonic acid is loaded on the high-porosity inorganic nanoparticles, and the surface of the inorganic nanoparticles is modified with the crown ether in the form of a long cantilever, so that the preparation process of the dipropylene glycol is simplified, the dipropylene glycol with a low freezing point is obtained, the purity and the yield of the dipropylene glycol are improved, and the method is suitable for industrial production. And the solid acid catalyst still has good catalytic activity after being recycled for many times.

The invention discloses an environment-friendly waste asphalt mixture biological regenerant. The environment-friendly waste asphalt mixture biological regenerant comprises 60-70 wt% of an oil component, 10-20 wt% of a regeneration component, 4-8 wt% of an activator, 2-8 wt% of a penetrant and 2-5 wt% of a solubilizer, the oil component is composed of waste pine needle oil and waste epoxidized soybean oil. The environment-friendly waste asphalt mixture biological regenerant provided by the invention can improve the colloid structure of regenerated asphalt, enables the regenerated asphalt to recover good performance, has excellent permeability, can greatly improve the low-temperature performance of the waste asphalt mixture (PAP), and ensures good pavement performance of the waste asphalt mixture (PAP).

The invention belongs to the technical field of adsorbents, and particularly relates to a sugarcane peel adsorbent and a preparation method and application thereof. The preparation method comprises the following steps: performing cooking treatment on the sugarcane peel, softening and expanding cellulose and hemicellulose in the sugarcane peel, and exposing hydroxyl groups on the cellulose and hemicellulose to obtain cooked sugarcane peel; immersing the cooked sugarcane peel in an ester compound aqueous solution, and drying to obtain a sugarcane peel adsorbent; wherein the concentration of the ester compound aqueous solution is 0.059 mol / L to 0.5 mol / L. The preparation method provided by the invention overcomes the problems of high cost and difficulty in large-scale industrial production when the biomass adsorbent is prepared by using mixed enzyme in the prior art; and the sugarcane peel adsorbent obtained by the preparation method can effectively improve the defect of PM10 adsorption capacity of the existing adsorbent, realizes resource utilization of the waste sugarcane peel, and reduces resource waste and environmental pollution.

The invention belongs to the field of daily chemicals, and particularly relates to a ginseng extract microcapsule and application thereof in daily chemical products, a preparation method of the ginseng extract microcapsule comprises the following steps: adding a ginseng extract into a wall material solution, uniformly stirring, then adding an emulsifier, stirring again, and carrying out spray drying to obtain the ginseng extract microcapsule, a core material of the microcapsule is a ginseng extract; the preparation method of the ginseng extract comprises the following steps: freeze-drying ginseng, grinding into powder, adding the ginseng powder into deionized water, homogenizing to obtain a suspension, carrying out wall breaking treatment on the suspension, adding into a compound bacteria solution, fermenting, adding a compound enzyme into a fermented product, carrying out enzymolysis, extracting the solution subjected to enzymolysis by adopting supercritical CO2, and drying to obtain the ginseng extract. The ginseng extract is obtained.

The present application provides a kind of porous poly-L-lactic acid microspheres, and its preparation method and injection preparation comprising porous poly-L-lactic acid microspheres, the porous poly-L-lactic acid microspheres are prepared by emulsification-solvent evaporation method from first component, second component and optional auxiliary component, wherein the first component is poly-L-lactic acid, the second component is sodium carboxymethyl cellulose, the content of the first component is 98%-99.9% of the total mass of the first component and the second component, the content of the second component is 0.1%-2% of the total mass of the first component and the second component, and the porous poly-L-lactic acid microspheres have topological morphology.

The invention relates to the field of industrial solid waste resource utilization, in particular to a method for regenerating waste coconut shell charcoal through microwave activation, which at least comprises the following steps: step 1, soaking waste coconut shell charcoal in alkali liquor under the condition of microwave radiation; step 2, carrying out ultrasonic treatment on the soaked waste coconut shell charcoal; a step; and 3, drying the waste coconut shell charcoal subjected to ultrasonic treatment to complete regeneration of the waste coconut shell charcoal. According to the method for regenerating the waste coconut shell charcoal through microwave activation, the waste coconut shell charcoal is soaked in the alkali liquor under the condition of microwave radiation and then subjected to ultrasonic treatment, regeneration of the waste coconut shell charcoal is achieved, activated carbon with the high methylene blue degradation rate and the good regeneration effect is obtained, the regeneration rate of the waste coconut shell charcoal exceeds 98%, and the regeneration rate of the waste coconut shell charcoal exceeds 98%. And the regeneration rate after seven times of cyclic regeneration can also be kept at 95% or above.

The invention provides IncRNA and application thereof in improving the regeneration capacity of mesenchymal stem cells, and belongs to the technical field of biological medicine. The lncRNA provided by the invention has the effect of improving the regeneration capacity of endometrial-derived mesenchymal stem cells of old people, and solves the problem of limited performance of cell materials in the prior art. The invention proves that the regeneration capacity can be improved by changing the expression of the lncRNA in the endometrium-derived mesenchymal stem cells of the old people, and a theoretical basis is provided for clinical application of the lncRNA in multiple aspects. CCK8 shows that the lncRNA has the effects of promoting the proliferation of Old-hEMSCs and resisting oxidative damage; scratch experiments show that the overexpressed lncRNA has the capability of promoting the migration of the Old-hEMSCs.

The invention belongs to the technical field of biological medicines, and particularly relates to an anti-alopecia pharmaceutical composition, anti-alopecia cream and a preparation method of the anti-alopecia cream. The invention discloses an anti-hair loss pharmaceutical composition which comprises dimethyl curcumin, eriochin and vitamin E, wherein the mass ratio of the dimethyl curcumin to the eriochin to the vitamin E is (0.5-2): 1: (1-2). The pharmaceutical composition provided by the invention can enhance hair follicle cell viability, restore hair follicle activity and skin state, improve hair regeneration capacity and slow down the alopecia process through dual effects of degrading scalp hair follicle androgen receptors and promoting scalp blood circulation. Meanwhile, the treatment target of the pharmaceutical composition provided by the invention is an androgen receptor instead of androgen, so that the adverse reaction caused by influence of 5 alpha-reductase inhibitors such as finasteride on the androgen level is overcome, and the pharmaceutical composition has higher biological safety.

The application discloses a polyacid zeolite imidazolate framework loaded monatomic catalyst and a preparation method and application thereof, and belongs to the technical field of catalysts. The preparation method of the catalyst is as follows: (1) preparing a zeolite imidazolate framework material; (2) mixing the dried zeolite imidazolate framework material and a metal salt in a solvent and stirring; then adding a heteropoly acid, controlling the pH in the system to be 5-7, and performing a solvothermal reaction under the condition of 80-120 DEG C; after the reaction is completed, cooling and centrifugal separation are performed to obtain a precipitate; and (3) performing calcination treatment on the precipitate to obtain the polyacid zeolite imidazolate framework loaded monatomic catalyst. The polyacid zeolite imidazolate framework loaded monatomic catalyst prepared by the method has high catalytic activity, high selectivity and good cycle stability, and has a good application prospect in acetyl propionate esterification reaction.

This invention belongs to the field of water softening and sterilization technology, and discloses an ion-selective adsorption electrode, a micro-electric field adsorption system, and their application in water softening and sterilization / algae removal. An ion-selective adsorption electrode comprises polypolycarboxylate ion exchange fibers, activated carbon, a conductive agent, and a binder, wherein the mass percentage of the polypolycarboxylate ion exchange fibers is 5-20%. This invention uses CCEF-modified activated carbon as the cathode, and at the optimal doping level, it effectively removes Ca... 2+ and Mg 2+ The selectivity coefficients were 15.0 and 13.5, respectively, for Ca 2+ The electroadsorption capacity of the electrode is 311 μmol / g, which is much higher than that of the AC electrode. After 50 cycles of stability testing, the Ca... 2+ The electroadsorption capacity remained above 85%, demonstrating good regeneration ability. Activated carbon modified with nano-silver was used as the anode, and under electric field enhancement, the inhibition rates against bacteria and microalgae reached over 99% and 90%, respectively, exhibiting excellent antimicrobial contamination capabilities.

The invention relates to the technical field of organic synthesis, and provides a method for preparing o-sulfonyl chloride / amine methyl benzoate by using o-chloromethyl benzoate. The preparation method comprises the following steps: 1, mixing methyl o-chlorobenzoate and pure water, stirring, adding sodium thiosulfate, and heating for reaction to obtain a solution; the preparation method comprises the following steps: adding dichloroethane and pure water into a reaction kettle, stirring, cooling, introducing chlorine, dropwise adding a solution, controlling the dropwise adding time and the temperature of the reaction kettle, carrying out a heat preservation reaction, removing chlorine, and drying to obtain o-sulfonyl chloride methyl benzoate; and 2, on the basis of the prepared o-sulfonyl chloride methyl benzoate, adding the o-sulfonyl chloride methyl benzoate into methanol while stirring, cooling, adding an ammonia solution, heating for reaction to generate a crude o-sulfonamide methyl benzoate product, and adding an adsorbent for purification to obtain the o-sulfonamide methyl benzoate. The preparation method disclosed by the invention is relatively low in production cost, less in waste gas and waste water and capable of realizing coordinated development of economic benefits and environmental benefits, and the o-sulfonyl chloride / methyl aminobenzoate is high in purity.

The invention relates to a regeneration control method for a diesel particulate filter of a diesel engine system. The regeneration control method comprises the following steps: judging whether a regeneration condition is met or not; under the condition that the regeneration condition is met, the total oil injection amount used for remote back injection is determined according to the operation parameters of the diesel engine system, and the operation parameters at least comprise the air inlet temperature of the diesel particle filter; the method comprises the following steps of: splitting far rear spraying into a plurality of successive partial far rear spraying parts, the sum of the oil spraying quantity of the partial far rear spraying parts is equal to the total oil spraying quantity, and the front far rear spraying part and the rear far rear spraying part in the adjacent partial far rear spraying parts are spaced by a time difference; the time difference is calculated at least by rail pressure in a common rail pipeline of the diesel engine system and the fuel injection quantity of the front part far rear injection. The invention also relates to a corresponding computer program product, a regeneration control device and a diesel engine system. According to the invention, the fuel injection quantity of each part of the remote rear injection can be accurately controlled, so that the optimized regeneration effect of the diesel particulate filter is realized.

The present application belongs to the technical field of vehicle engineering, and particularly relates to a particle trap regeneration method, device, storage medium and controller; through reversing the installation of the particle trap and interfacing the rotating purging component, the regeneration of the trap is realized on the engine tail gas pipeline; wherein, in order to improve the regeneration effect, a cyclic or intermittent variable working condition control process can be introduced; through setting the first type of working condition and / or the second type of working condition and switching, the pulsating tail gas output is introduced; in the process, high load and high speed and low load and low speed working conditions can be respectively used to realize different excitation states of the tail gas; in addition, the preset lean burn working condition and high temperature tail gas configuration can be combined to further improve the regeneration effect; at the same time, the differential pressure detection closed loop of the two ends of the trap can be introduced to optimize the monitoring ability of the regeneration process, timely end the regeneration process, and improve the operation efficiency; the application of the related products will be helpful to reduce the emission of the internal combustion engine and improve the fuel consumption.

The invention discloses a zirconium hydroxide powder material and a preparation method and defluorination application thereof. The zirconium hydroxide powder material comprises ZrO (OH) 2, the specific surface area is larger than 55.7 m < 2 > / g, and the zirconium hydroxide powder material has high adsorption activity, has a good defluorination effect when applied to defluorination of an aqueous solution and plays a role in reducing the dosage of a defluorination agent. The zirconium hydroxide powder material is good in regeneration effect after defluorination, the regeneration process is simple, and the consumed time is short. The zirconium hydroxide powder is obtained by mixing commercially available zirconium hydroxide with ammonia water, standing and then carrying out heat treatment, and the method is simple, controllable and suitable for industrial production.

The present invention relates to the technical field of asphalt regeneration, and in particular to an asphalt regeneration agent and a preparation method thereof, wherein the asphalt regeneration agent is composed of the following raw materials: 45-55 parts of purified waste oil, 10-15 parts of furfural emulsified oil, 10-15 parts of methyl carbamate, 10-15 parts of waste rubber powder, 3-6 parts of mica powder, and 2-4 parts of modified fiber. The present invention firstly uses waste oil as the main preparation raw material to achieve the reuse of waste resources and effectively reduce costs; secondly, the original system of aged asphalt is broken through the emulsification effect of furfural emulsified oil and the polar effect of methyl carbamate, so that components such as waste oil, furfural extracted oil, and mica powder are redissolved, and the proportion of each component is rebalanced, while improving the stability and strength of the regenerated asphalt.

The present invention discloses a dealkalizing refining agent and its preparation and application. The dealkalizing refining agent comprises a filler, a silane film and a modified layer from the inside to the outside, wherein the modified layer contains a sulfonic acid group and a secondary amine group. The preparation method of the dealkalizing refining agent comprises: preparing a filler covered with a silane film; and then treating the filler covered with the silane film with a modifier to obtain the dealkalizing refining agent. The method of the present invention can efficiently remove alkaline impurities that affect the activity of ethylbenzene alkylation catalyst, reduce the accumulation of alkaline impurities in the catalytic system, effectively extend the service life of the ethylbenzene alkylation catalyst, and reduce the production cost of ethylbenzene, and can be used in the industrial production of dry gas to ethylbenzene devices.

The invention discloses an adsorbent material for perfluorinated compounds in water and a preparation method and application thereof, and belongs to the technical field of water treatment materials, 1, 3-diamino-2-hydroxypropane, m-tribenzoic acid and 3, 3 '-(1, 4-phenylene) bis [2-propiolic acid] are used as raw materials to react to obtain a polyamide polymer, and finally the polyamide polymer is hydrolyzed to remove the m-tribenzoic acid to obtain the perfluorinated compounds in the water. The polymer adsorbent material is prepared; the adsorbent material for the perfluorinated compounds in the water, prepared by the invention, has a relatively large specific surface area and adsorption capacity, can be used for adsorbing the perfluorinated compounds in the water, has relatively strong mechanical stability, long service life and regeneration capacity, and has a good application prospect in the aspect of removing the perfluorinated compounds in the water.

The invention provides a method for separating and extracting tryptophan from fermentation liquor, and belongs to the technical field of tryptophan extraction. The extraction method comprises the following steps: adding formic acid into tryptophan fermentation liquor, adjusting the pH value to 5.80-5.90, then reducing the temperature to 5.8-6.2 DEG C, carrying out heat preservation and standing to obtain crystallized mixed liquor, carrying out centrifugal treatment to obtain precipitated coarse crystals, putting the precipitated coarse crystals into deionized water, fully and uniformly dissolving the precipitated coarse crystals, adding porous activated carbon, stirring and centrifuging to obtain decolored liquor; adjusting the pH value of the decoloring solution to 3.0-3.4 by using formic acid, introducing the decoloring solution into an ion exchange column, filling cation exchange resin into the ion exchange column, eluting by using an ammonia water solution after adsorption is completed to obtain a tryptophan mixed solution, crystallizing and drying to obtain a tryptophan product; the tryptophan product obtained by the method is high in purity and high in yield, and the regeneration capacity of the cation exchange resin is high.

The application discloses a novel selective adsorption of primary amino-containing dye magnetic bio-based adsorbent, and a preparation method thereof, which comprises the following steps: reacting sodium lignosulfonate, carboxylated chitosan, sodium alginate, magnetic particles, epichlorohydrin and polyethylene imine. The raw material containing rich carboxyl, sulfonic acid group and imine group is added to facilitate the coordination of metal ions, more active sites are added, the new design idea of adding the pore-forming agent polyethylene glycol to increase the specific surface area of the adsorbent microspheres, and the composite preparation of carboxylated chitosan (CCS), sodium lignosulfonate (LS), sodium alginate (SA) and magnetic particles (Fe3O4) and the modification of polyethylene imine (PEI) are realized through the one-pot method, so as to obtain a magnetic bio-based adsorbent which can selectively adsorb primary amine-containing dyes. The removal rate of the adsorbent SA-CCS-LS@Fe3O4 to the primary amine-containing dyes reaches more than 98%, and the adsorbent can be recycled.

The utility model discloses a built-in heating type dryer and an automobile air supply unit, which comprise a shell, the interior of the shell is filled with a drying agent, the shell is provided with an air inlet and an air outlet, the shell is also provided with a built-in heating assembly inserted into the drying agent, and the air inlet and the air outlet are communicated with the built-in heating assembly. A heat dissipation component installed outside the built-in heating assembly is arranged in the drying agent, the heat dissipation component makes full contact with the drying agent, the drying agent in the shell can be fully heated by arranging the built-in heating assembly and the heat dissipation component, heat is dissipated into the drying agent through the heat dissipation component, particles of the drying agent are heated, and the drying effect is improved. Water absorbed by the drying agent particles is separated from the particles due to high temperature and is discharged out of the system through gas circulation, permanent reuse of the drying agent is achieved, and the regeneration effect is good.

The invention belongs to the technical field of organic synthesis, and particularly relates to a TVOC (Total Volatile Organic Compound) adsorption supramolecular cage as well as a preparation method and application thereof. The invention provides a TVOC (Total Volatile Organic Compound) adsorption supramolecular cage which has a structure as shown in a formula I. The size and the shape of a cavity of the TVOC adsorption supramolecular cage are perfectly matched with those of TVOC molecules, so that high-selectivity and high-capacity TVOC adsorption is realized, and compared with a conventional adsorbent, the TVOC adsorption supramolecular cage has the advantages that the adsorption efficiency and the adsorption capacity are remarkably improved; the inner wall of the cavity of the supramolecular cage is provided with a functional group which interacts with TVOC molecules, so that the acting force of the TVOC molecules and the supramolecular cage is enhanced, and the TVOC molecules can be firmly adsorbed in the supramolecular cage and are not easy to fall off or leak; the supramolecular cage has good stability and reproducibility, can be used for a long time under different environmental conditions, does not generate harmful byproducts, and is harmless to the environment and human bodies. # imgabs0 #

The invention discloses a method for synthesizing cyclopentadiene from a biomass platform compound levulinic acid and a derivative thereof, which is characterized in that levulinic acid or the derivative thereof is used as a raw material and is converted into a target product cyclopentadiene in one step in a fixed bed continuous reactor under the action of an AxByOz type composite metal oxide catalyst. The method is simple in process route and environment-friendly, the catalyst is simple to synthesize, and a brand-new way is provided for synthesizing renewable cyclopentadiene from levulinic acid and derivatives of levulinic acid.

The present application belongs to the cross field of water treatment technology field and waste shrimp shell resource utilization technology field, and specifically relates to a waste shrimp shell derived chitosan-based iron-carbon composite hydrogel as well as a preparation method and application thereof. The present application carries out overall design around the preparation of chitosan and the forming process of network structure, adopts a betaine-acetic acid low eutectic solvent system to extract chitin in waste shrimp shells, and further converts to obtain chitosan. Meanwhile, carbon nanotubes and nano-ferroferric oxide are introduced into the chitosan system to synergistically regulate the material from two aspects of skeleton support and function supplement. The hydrogel microspheres have good antibiotic adsorption and degradation capacity, and have high application prospect in wastewater treatment in industries such as aquaculture, pharmaceuticals and agriculture.

The invention provides a composite adsorption material for efficiently removing U (VI) in nuclear wastewater and a preparation method thereof, the composite adsorption material is prepared by growing a defect-induced metal organic framework material UIO-66-P on a low-cost and renewable balsa wood base material in situ to form UIO-66-P at balsa wood composite aerogel, the UIO-66-P is synthesized through defect induction, and the UIO-66-P at the balsa wood composite aerogel is used for adsorbing U (VI) in nuclear wastewater. According to the preparation method, the material hydrophilicity and active adsorption sites are increased, so that the uranium ion adsorption capacity is remarkably improved, the maximum uranium adsorption capacity in a low-concentration aqueous solution can reach 594 mg.g <-1 > which is far better than that of a traditional inorganic material, a carbon-based material and an existing MOF material, and the problem of low adsorption efficiency in a low-concentration environment is successfully solved; the composite material has excellent reproducibility, can still keep efficient uranium adsorption performance after multiple adsorption-desorption cycles, remarkably reduces long-term use cost and waste generation, has wide market application prospects, and provides an efficient solution for sustainable development of nuclear energy industry.