295 results about "Molecular adsorption" patented technology

Multimolecular devices and drug delivery systems prepared from synthetic heteropolymers, heteropolymeric discrete structures, multivalent heteropolymeric hybrid structures, aptameric multimolecular devices, multivalent imprints, tethered specific recognition devices, paired specific recognition devices, nonaptameric multimolecular devices and immobilized multimolecular structures are provided, including molecular adsorbents and multimolecular adherents, adhesives, transducers, switches, sensors and delivery systems. Methods for selecting single synthetic nucleotides, shape-specific probes and specifically attractive surfaces for use in these multimolecular devices are also provided. In addition, paired nucleotide-nonnucleotide mapping libraries for transposition of selected populations of selected nonoligonucleotide molecules into selected populations of replicatable nucleotide sequences are described.

Molecular adsorption to the microfluidic device surfaces can be passively and actively mitigated by mixing certain hydrophilic polymers (organic polymers with repeating hydrophilic groups—the preferred polymers being amphipathic surfactants—with the sample liquid during or prior to relevant microfluidic operations. Nonionic surfactants such as polyoxyethylene sorbitan monooleate and polyoxyethylene octyl phenyl ether are especially effective. High molecular weight polyethylene polymers are also effective. The hydrophilic polymers appear to prevent binding of the fouling molecules to the microfluidic by occupying the surface sites in place of the fouling molecules or by interacting with the fouling molecules to prevent binding of the fouling molecules the surface. When surface adsorption is thus mitigated, microfluidic devices can readily handle samples containing biomolecules to enable active sample concentration, filtering, washing, transport, mixing and other sample handling operations.

The present invention provides a metal-organic framework (“MOF”) comprising a plurality of metal clusters and a plurality of multidentate linking ligands. Each metal of the plurality of metal clusters comprises one or more metal ions. Each ligand of the plurality of multidentate linking ligands connects adjacent metal clusters. The present invention also provides a method of forming the metal-organic framework. The method of the invention comprises combining a solution comprising one or metal ions with a multidentate linking ligand having a sufficient number of accessible sites for atomic or molecular adsorption that the surface area of the resulting metal-organic framework is greater than 2,900 m2 / g.

Molecular adsorption to the microfluidic device surfaces can be passively and actively mitigated by mixing certain hydrophilic polymers (organic polymers with repeating hydrophilic groups—the preferred polymers being amphipathic surfactants—with the sample liquid during or prior to relevant microfluidic operations. Nonionic surfactants such as polyoxyethylene sorbitan monooleate and polyoxyethylene octyl phenyl ether are especially effective. High molecular weight polyethylene polymers are also effective. The hydrophilic polymers appear to prevent binding of the fouling molecules to the microfluidic by occupying the surface sites in place of the fouling molecules or by interacting with the fouling molecules to prevent binding of the fouling molecules the surface. When surface adsorption is thus mitigated, microfluidic devices can readily handle samples containing biomolecules to enable active sample concentration, filtering, washing, transport, mixing and other sample handling operations.

A system for polarizing a material to be used in techniques employing magnetic resonance (MR) is provided. The polarizer system includes a cooling chamber having a cryogenic refrigerant therein for use in polarizing a substance. A sorption pump is connected to the cooling chamber to reduce a pressure therein to allow for hyperpolarizing of the sample. The sorption pump is cooled by a refrigeration system to promote molecular adsorption in the sorption pump. The cooling chamber, sorption pump, and refrigeration system are arranged in a closed system.

This invention discloses a preparation method of functional order mesoporous carbon without metal. Make water-soluble phenol formaldehyde and response type of acid for polymerization, utilize predecessor and nonionic wetting agent to carry out organism-organism self assembly, get resin-nonionic wetting agent composite containing boron and phosphonium, remove surface acting agent by calcinating in inert atmosphere, carbonize with high temperature, get non-metal element functional ordered mesoporous polymer, and make order mesoporous carbon with boron or phosphonium. Its ordered meso-scale structure is divided into two kinds. It has characteristics of uniform large specific surface, pore diameter, bore, and path. Because boron oxygen bond of high bond energy is leaded in molecular constitution, it makes order mesoporous carbon with boron have strong mechanical stability. It can be used as wear-resisting stuff. It has lubricating, abrasion improving, service life of friction materials extending effects. It has extensive application prospect in catalytic action, heavy metal ion, and colorant molecular adsorption and electrode materials.

This invention discloses a new order mesoporous carbon that contains nitrogen and its composition method and initial application in adsorbing domain. Composition method: make solubilis resin and organic predecessor containing nitrogen for reaction in organic solvent, utilize predecessor and nonionic wetting agent to carry out self assembly, get resin-nonionic wetting agent composite containing nitrogen, remove surface acting agent by calcinating in inert atmosphere, carbonize, get order mesoporous carbon containing nitrogen; or carbonize at high temperature resin-nonionic wetting agent composite containing nitrogen, get order mesoporous carbon containing nitrogen. Pore diameter of prepared mesoporous carbon is 2.0-6.0nm, bore is 0.10-1.00 cu cm / g. Specific surface area is 500-1200sq m / g. C / N molar ratio is 100:0.20-100:10.00. It can be used as adsorbing substance of phenolic compounds in waste liquids. It has extensive application prospect in catalytic action, heavy metal ion, and colorant molecular adsorption and electrode materials.

Alcohol fuel can be produced by: treating raw materials, fermenting, refining, molecular sieve adsorption dewatering, and waste liquid treating. A thermal coupling is used to connect dewatering and condense distilling procedures, i.e., gas alcohol from refining process is fed to molecular adsorption dewatering process after thermal coupling condensation and distillation. Heat energy released from cold condensation is used as heat energy for distillation. None of energy is needed any more. The raw materials may be corn, rice, wheat, Chenese sorghum, dry sweet potato, cassawa, sugarcane juice, sugarbeet juice, or green cyrup, etc.

A method for inspecting an edible oil includes obtaining a first Raman spectrum from an edible oil sample, discovering an unhealthy, unsanitary, unsafe, or adulterated content in the edible oil sample in part by the intensity level of the fluorescence background in the first Raman spectrum, introducing the edible oil sample to nano-scale surface structures to allow molecules of the edible oil sample to be adsorbed to the nano-scale surface structures, illuminating the edible oil sample and the nano-scale surface structures by a laser beam, obtaining a second Raman spectrum from light scattered by molecules of the edible oil sample adsorbed to the nano-scale surface structures, and identifying the unhealthy, unsanitary, or unsafe content in the edible oil sample using one or more first spectral signatures in the second Raman spectrum.

The present invention provides, for example, a target detecting device comprising a target capturer, means for releasing the target capturer, light irradiating means and light detecting means, the target capturer at least partially containing a region interactive with an electrically conductive member, being capable of capturing a target, and being capable of emitting light upon irradiation with light in the case of not interacting with the electrically conductive member, the means for releasing the target capturer serving to release the target capturer from the electrically conductive member by ceasing the interaction between the target capturer and the electrically conductive member, the light irradiating means serving to apply light to the electrically conductive member, and the light detecting means serving to detect light emitted by the target capturer upon irradiation of light applied by the light irradiating means. It also provides a target capturer comprising an interacting section, a capturing section and a light emitting section, the interacting section at least partially containing a region interactive with an electrically conductive member, the capturing section capable of capturing a target, and the light emitting section capable of emitting light upon irradiation with light when the region in the interacting section does not interact with the electrically conductive member.

The invention discloses a molecularly imprinted fiber material and a preparation method thereof. The matrix of the molecularly imprinted material is an organic fiber, specifically polypropylene, polytetrafluoroethylene, viscose, polyacrylonitrile or polyvinyl alcohol. The preparation method comprises the following steps of: radiating the matrix fibers after being preprocessed using cobalt 60 gamma rays, mixing the radiated fibers with a graft monomer, and after a grafting reaction, removing homopolymers from the fibers through extraction filtration, and then drying the fibers in vacuum, thereby obtaining grafted modified fibers; reacting the grafted modified fibers with a functional polymer or a functional monomer, after the completion of the reaction, washing away the non-reacted functional polymer or functional monomer on the surface of the fibers, and then adding the fibers to the solution of template ions or template molecules to absorb the template ions or the template molecules;after the absorption is saturated, performing cross-linking using a cross-linking agent, and after the reaction is ended, removing the template ions or the template molecule through desorption using a desorbent, thereby obtaining the molecularly imprinted fiber material. The fiber material of the invention has high mechanical strength, high thermal stability, high chemical stability, high absorption capacity and high selectivity.

The invention discloses a mud-repelling agent for concrete. The monomer composition and mass percent content of the polymerization mother liquor are: 50-75% of alkenyl amine ether, 5-15% of (meth)acrylic acid ester, and 0.1-1% of DA %, alkenyl sulfonate 0.5-5%, EA 0.1-1%, vinyl ester 5-15%. The mud inhibitor introduces polymerized monomer lipid monomers, so that after the molecule is adsorbed on the surface of the mud particles, it will reduce the water absorption of the mud particles, so that the water demand of the concrete can be at an appropriate value. At the same time, the polymer monomer of the mud-repelling agent is a molecule with a branched chain structure, and the branched chain can effectively reduce the possibility of mud particles approaching each other to coagulate and gel, so that the mud-containing concrete system has good fluidity.

The invention relates to a water-soluble polymer adsorption material of a coupling cyclodextrin in the field of biomedical materials and an application thereof. The adsorption material comprises a coupling ligand which takes natural polysaccharide with amino or hydroxyl and derivatives thereof or chemosynthesis polymer as carriers and is characterized in that the molecule of the polymer adsorption material has the structure of formula (I). In the formula, R is chosen from natural polysaccharide with amino or hydroxyl and derivatives thereof or chemosynthesis polymer with the viscosity average molecular weight between 6KD and 500KD; X is chosen from C0-C6 alkane chain with O atom, N atom or OH group; CD is chosen from Beta-cyclodextrin or substitutional Beta-cyclodextrin. The adsorption material dissolved into a medical dialyzate can be applied to blood purification treatment for grave hepatitis patients. The adsorption material of the invention has the advantages of removing small molecular protein bound toxin and water soluble toxin molecular at the same time, low treatment cost which is only about one tenth of that of a molecular adsorption recycling system and low non-specificity adsorption of plasma protein.

The invention relates to an amino end-group triazine ring tree-shaped macromolecular adsorbent and a preparation method thereof. An anionic dye can be removed by fading dye wastewater. A tree-shaped macromolecule is a three-dimensional hyper-branched sequential novel macromolecule, so that the size, shape structure and functional group of the molecule can be strictly controlled and designed at molecular level, a dye molecule can be wrapped by a cavity structure in the macromolecule, and the removing purpose is achieved. The preparation method provided by the invention comprises the following steps of: dissolving cyanuric chloride in acetone; adding quadrol; stirring, reacting and then adding acid-binding agent; increasing temperature and reacting; and performing suction filtration on the product and then extracting and washing, thereby obtaining the amino end-group triazine ring tree-shaped macromolecular adsorbent. Under the influence of unsaturated bonds, the adsorbent disclosed by the invention is higher in reactivity and is easily subjected to nucleophilic substitution; the reaction selectivity is excellent; the condition is controllable and the method is conducted in steps; the adsorbent has physical and chemical adsorption for the anionic dye; and the adsorbent has the characteristics of higher relative molecular mass, so that the material usage is less and the cost is low.

The invention belongs to the technical field of paints, and discloses a halloysite antibacterial water-based paint, and a preparation method and application thereof. The preparation method comprises the following steps: carrying out vacuum treatment on a halloysite-chitosan antibacterial agent mixed water solution, separating, and drying to obtain antibacterial-agent-carried halloysite powder; and mixing the antibacterial-agent-carried halloysite powder with a water-based acrylic resin paint to obtain the halloysite antibacterial water-based paint. By utilizing the cavity structure of the halloysite nanotubes, the antibacterial agent molecules are carried onto the halloysite through the molecular adsorption and vacuum processes, and are further mixed with the acrylic resin paint to obtain the long-acting antibacterial-function acrylic resin paint with improved mechanical properties. The halloysite nanotubes are utilized to carry and slowly release the antibacterial agent, thereby implementing the compatibility of the chitosan and other antibacterial agents in the acrylic resin paint, and displaying the excellent antibacterial effect. The system is water-based and environment-friendly, and can be widely used in various fields.

The invention discloses a super-hydrophilic oil water separation net film with antifouling and antibacterial functions and preparation as well as application thereof. The net film is provided with a special three-layer structure, and is formed by a water-sensitive agent bottom layer, a crosslinking agent interlayer and a super-hydrophilic ternary polymer surface layer; a super-hydrophilic ternary polymer at the outermost layer is obtained by polymerizing three monomers of HEA, SPP and DMHB through a water solution, and adopted raw materials and a reaction system (water) are environment-friendly, cannot cause secondary pollution, and also cannot infect the health of an operator. In the super-hydrophilic ternary polymer, long carbon chain quaternary ammonium salt groups of the DMHB exist and can effectively kill bacteria, and meanwhile SPP glycine betaine groups simultaneously having positive and negative charges also exist and can effectively prevent molecular adsorption of protein and the like. The net film is stable in film layer structure, can better keep super hydrophilicity and antifouling and antibacterial properties, and can be applied to treatment of oily wastewater.

The invention discloses a method for measuring DNA molecular mass by according to a resonance principle, and belongs to the field of detection and weighing of organic macromolecular mass. The system comprises a vibration exciter, a hinged support A, a hinged support B, a micro simply supported beam of which two ends are respectively assembled on the hinged support A and the hinged support B, a DNA molecular adsorption layer assembled on the micro simply supported beam, a DNA molecule to-be-measured, and an amplitude receiver assembled on the micro simply supported beam. The micro simply supported beam is subjected to vibration excitation so as to freely vibrate by the vibration exciter, and the amplitude receiver receives the corresponding amplitude and vibration frequency, so that the DNA molecular mass can be calculated. The method for measuring DNA molecular mass through the resonance principle disclosed by the invention is simple in principle and high in measurement accuracy.

A sterilization germ killing comfort mask, including mask layers held in the mask with a fixed belt. There is a sterilization filter layer, an electrostatic layer, a far-infrared superfine calcium layer, and a facial protection layer from outside to inside of mask body. In use, the outside air passes through a first sterilization filter layer, the preliminary filtration sterilization filter layer removes larger grains of dust and sterilization, electrostatic layer can filter through the sterilization of dust. Superfine calcium far-infrared layer removes acidic dust, bacteria and oily molecular adsorption, and neutralize the acid molecules, sterilization and decomposition of oily molecules absorbed. Facial protection layer strengthen filtering and protection of facial skin. This mask for the various molecules in air dust filtration and sterilization, sterilization dust removal ability, remove the inclusion of peculiar smell in the air at the same time, guarantee the quality of air that users breathe, and the user to wear comfortable, strong practicability.

The invention belongs to the field of the energy and chemical industry and particularly relates to a preparation method of a nanometer material using clay as a carrier and using a perovskite type compound as an active component and application of the nanometer material in photocatalytic degradation of antibiotics.Lanthanum nitrate, ferric nitrate, cerous nitrate, citric acid and the clay are added to deionized water and are mixed, then the mixture is transferred to a water bath kettle for evaporation to obtain wet gel, and drying, calcinations and dry grinding are performed to obtain the lanthanum ferrite / clay nano-structure composite material.The antibiotics are subjected to the photocatalytic degradation by adopting the composite material and can be rapidly degraded under visible light by utilizing the high catalytic activity of (cerium doped) lanthanum ferrite.The clay carrier facilitates antibiotic molecular adsorption in the antibiotic degradation process, the antibiotics are in contact with the lanthanum ferrite after being absorbed to the catalyst surface, and antibiotic molecules are decomposed under visible light irradiation to produce other active species.

The invention discloses application of beewax in a controlled release pesticide and a method for preparing the controlled release pesticide by taking the beewax as a matrix and belongs to the technical field of controlled release pesticides. The controlled release pesticide taking the beewax as the matrix is prepared by utilizing pesticide active molecules, an adsorbent, beewax or modified beewax,a surfactant, a controlled release regulator and a filler. According to pesticide granules prepared by the method, the pesticide active molecules in the pesticide granules can be released in a certain period of time according to crop needs, the uncontrollability of release time of the conventional controlled release pesticide is solved, and an excellent effect of controlling crop pests is achieved. Moreover, the preparation process is simple, the raw materials are cheap, and the preparation cost is low.

The invention discloses a two-dimensional transition metal sulfide gas sensor based on an antenna structure, and preparation thereof. The gas sensor comprises a two-dimensional transition metal sulfide TMDCs film which is patterned into two connected parts of a conductive channel and an antenna structure, wherein the surface of the conductive channel is covered with a passivation layer; the antenna structure is used for adsorbing the gas to be tested as a gas sensitive layer; when molecules of the gas to be tested are adsorbed on the surface of the antenna structure and are performed with charge transfer, the concentration of carriers in the antenna structure changes to form a concentration gradient and induce the diffusion of the carriers, so that the concentration of the carriers in theconductive channel changes, and finally the resistance of the conductive channel is changed, thereby realizing the sensing of the gas to be tested by the gas sensor. The sensor, by distinguishing thegas sensitive layer and the conductive channel into two parts on the sensor structure, not only helps to increase the stability of the sensor, but also can improve the sensitivity of the gas sensor byutilizing the gain effect of the antenna structure.

The invention provides a gas sensor based on TMDCs-SFOI heterojunction and a preparation method thereof. The gas sensor takes two-dimensional transition metal sulfide TMDCs as a gas sensitive layer and a semiconductor film on an insulator SFOI as a conductive channel; after TMDCs are contacted with SFOI, due to the Fermi level difference, electrons are transferred from the high Fermi level side tothe low Fermi level side, thereby generating space charge regions on both sides of the heterojunction and forming a p-n junction; when gas molecules to be detected are adsorbed on the surface of theTMDCs and charge transfer occurs between the gas molecules to be detected and the TMDCs, the concentration of carriers in the TMDCs is changed, a p-n junction potential barrier is changed, the width of the space charge region in the SFOI is changed, and finally the resistance of the conductive channel is changed, so that the gas to be detected is sensed. According to the gas sensor based on TMDCs-SFOI heterojunction and the preparation method thereof, the gas sensitive layer is separated from the conductive channel, meanwhile, the high sensitivity of the two-dimensional TMDCs to adsorbed gas molecules is utilized, and a gas detector is beneficial to achieving high sensitivity and high reliability and can be directly integrated on a semiconductor chip together with the mature traditional semiconductor device process.

A system is disclosed for condensation particle counting in conjunction with modifying an aerosol to enhance the formation and growth of droplets of a selected working fluid, preferably water. Before saturation with the working fluid, the aerosol is exposed to an aerosol modifying component, preferably a vapor including molecules that are adsorbed onto surfaces of the particles or other elements suspended in the aerosol. Adsorption alters the surface character of the suspended elements towards increased affinity for the vapor of the working fluid, to promote the formation and growth of working fluid droplets. The droplets are optically detected to indicate numbers and concentrations of the suspended elements.

The invention discloses a preparation method of a supermolecular adsorbent and an application thereof and belongs to the field of light chemical. A porous adsorption material is prepared by crosslinking a pyridine macrocyclic compound in the presence of a crosslinking agent such as epoxy chloropropane and cyanuric chloride. The prepared adsorbent is low in cost, large in adsorption capacity and stable in adsorption, and the adsorption materials can be repeatedly used for many times, so that the preparation method has the advantages of excellent energy saving and emission reduction and environmental friendliness.

The invention discloses a synthesis and application method of composite function resin for selectively removing nitrate and phosphate at the same time, and belongs to the technical field of high molecular adsorption resin. The composite function resin having pyridine groups and triethylamine groups at the same time is synthesized. The composite function resin has the selective adsorption effect of pyridine transition metal complex on phosphate and the selective adsorption effect of triethylamine on nitrate at the same time. Nitrate and phosphate can be selectively adsorbed when other solubility coexistence anions such as sulfate radical, bicarbonate radical and / or chloride ions exist in a solution, and therefore the aim of selectively removing nitrate and phosphate at the same time is achieved, and deep removal of low-concentration nitrate and phosphate in secondary discharged water in biochemical treatment in sewage treatment plants is achieved.

A semiconductor sensor includes: a semiconductor substrate; a plurality of piezoelectric thin films layered on the semiconductor substrate, the plurality of piezoelectric thin films including at least a pair of the piezoelectric thin films layered above and below; a pair of electrodes that are formed at an interface of at least the pair of the piezoelectric thin films layered above and below and excite surface acoustic waves; a thin film directly under a lowest-layer piezoelectric film of the piezoelectric thin films; a metal thin film that is formed at an interface of the lowest-layer piezoelectric thin film and the thin film, and facilitate a growth of a ridge-and-valley portion on a surface of an uppermost-layer piezoelectric thin film of the piezoelectric thin films; and a sensitive film for molecular adsorption formed on at least the ridge-and-valley portion on the uppermost-layer piezoelectric thin film.

The invention discloses two fluorinated metal organic framework materials, preparation and low-carbon hydrocarbon separation application thereof, and belongs to the technical field of crystalline porous material preparation and gas separation. The two microporous copper-based MOF materials are formed by a cheap and easily available multi-coordination organic ligand 3-fluoroisonicotinic acid (FINA)and copper nitrate under different solvothermal conditions. The two MOF crystal structures have high porosity and have regular one-dimensional channels, the size of the channels is slightly larger than the molecular dynamics size of low-carbon hydrocarbon, and a structural basis is provided for adsorption separation of the low-carbon hydrocarbon gas molecules. Besides, hydrogen bond interaction sites exist in the pore channels, and alkyne molecules with smaller kinetic sizes can enter the pore channels easily after the pore channels are cut by fluorine atoms, and the acting force between alkyne gas molecules and the framework is enhanced so that the effect of preferentially adsorbing acetylene gas in acetylene-ethylene mixed gas and preferentially adsorbing propyne in propyne-propylene mixed gas is achieved, ethylene and propylene components in the mixed gas are purified, and the energy consumption in the separation process is reduced.

The invention provides a method for separating discolored chili extract from chili pigment in crude products of chili extract, which relates to a process for separating discolored chili extract from chili pigment. The method comprises the following steps: (1) soaking macroporous molecular adsorption resin by ethanol; (2) fully dissolving the crude products of chili extract by the ethanol; (3) injecting the chili extract solution into a chromatography column in which the molecular adsorption resin is filled, and standing; (4) enabling the solution to flow out of the chromatography column; (5) leaching by clear water; (6) eluting the chromatography column by the ethanol solution; (7) mixing the eluent and the ethanol effluent liquid, and carrying out decompression concentration to obtain the discolored chili extract; (8) eluting the chromatography column by normal hexane; and (9) collecting the eluent in the step (8), and carrying out decompression concentration to obtain the chili pigment without pungency. The invention overcomes the defects in the process of producing the discolored chili extract by activated carbon and diatomite, realizes the large-scale industrialized production of the discolored chili extract, can recycle the chili pigment to refine high-grade chili pigment, and is a cleaning project with low energy consumption and high efficiency.

The invention provides a metal-air battery air electrode and a preparation method thereof. The method comprises the steps: mixing a metal organic framework material with nitrogen source micromolecules, so that the nitrogen source micromolecules are adsorbed in the metal organic framework; then, carrying out high-temperature carbonization treatment in a nitrogen atmosphere; finally, carrying out acid treatment to remove metal particles to obtain a nitrogen-doped porous carbon material; and preparing the porous carbon material into slurry, and coating the surface of a conductive substrate with the slurry to obtain the air electrode of the metal-air battery. The nitrogen-doped porous carbon prepared by the method has high specific surface area, high nitrogen content and excellent oxygen reduction catalytic activity, the PVDF binder is added into the prepared slurry to ensure the connection between the catalyst and the substrate, and the erosion of electrolyte to the catalyst is resisted through the PTFE film, so that the stability of the electrode is maintained. The preparation method provided by the invention is simple and feasible, has good repeatability, is convenient for large-scale production, and can be used in the field of air batteries, especially air electrodes of lithium air batteries.

The invention discloses a recovering method for uranium and fluorine in uranium hexafluoride alkali absorption solution waste liquid. According to the recovering method, the uranium hexafluoride alkali absorption solution waste liquid is firstly acidized through acid, the pH is equal to 2.7-5.5 through adjustment, then macromolecule adsorbent (polystyrene-cyclohexyl amino maleic acid) is added to finish UO22+ adsorption, solid-liquid separation is performed, so that desorption is performed on obtained solids through acid with concentration larger than 1M to recover UO22+, Na2CO3 is added into the remaining solution to perform a next cycle of uranium hexafluoride elution, and after five or more cycles, the solution is rich in F- high in concentration. NaC1 is added into the solution, so that the solution is saturated, and NaF is precipitated due to the fact that the solubility is reduced, NaF solids are obtained through filtering and recovering, CaC12, or CaO or Ca (OH)2 solids or saturated solutions are then added into the solution, so that the residual F- forms CaF2 sediment, and fluoride removal is performed deeply. Finally, the uranium and the large amount of fluoride in the uranium hexafluoride alkali absorption solution waste liquid are recovered. Uranium in the radioactive waste liquid is recovered, zero drainage of the waste liquid is achieved, the drainage of the waste liquid reaches the national standard, and meanwhile the problem that in a traditional fluoride removal technology, a large amount of calcium fluoride is difficult to filter is solved.