76 results about "Membrane adsorption" patented technology

The invention belongs to the technical field of radioactive wastewater treatment and uranium extraction from seawater, and discloses a high-flux cellulose immobilized tannin membrane adsorption material as well as a preparation method and application thereof. The membrane adsorption material comprises an aldehyde cellulose acetate microfiltration membrane and waxberry tannin which is cured on the microfiltration membrane through gradient cross-linking. The membrane adsorption material provided by the invention keeps a reticular porous structure of a cellulose microporous filter membrane and has the characteristics of high flux and rapid mass transfer, the pure water flux of a single-layer membrane can reach 300 L / (m.h), the treatment capacity of a multi-layer membrane is remarkably increased, large-flow treatment can be realized, and the efficiency of extracting uranium from seawater or uranium-containing wastewater is remarkably improved.

The present invention discloses a diaphragm adsorption device, comprising a mounting seat, a shaping outer sleeve, a shaping inner sleeve, and a suction cup for adsorbing diaphragms. The mounting seat comprises a support plate and an air pipe fixedly connected to the upper side of the support plate. The shaping outer sleeve comprises a connecting seat and an extrusion sleeve. The connecting seat is provided with a mounting port, a sliding sleeve fixedly connected to the mounting port. The shaping inner sleeve comprises a pipe portion and a shaping portion. The pipe portion is connected to the air pipe, the pipe portion passes through the sliding sleeve and is slidably connected to the sliding sleeve. The lower side of the shaping portion forms an extrusion edge arranged around the suction cup. The height of the lower side of the extrusion edge is higher than the height of the lower side of the suction cup. The shaping portion is connected to the connecting seat via a spring. A first slide groove is formed in the pipe portion. A ejector pin is slidably connected in the first slide groove. The ejector pin is provided with an air passage running through the upper and lower ends of the ejector pin. The lower end of the ejector pin is located on the lower side of the suction cup. The present invention provides a diaphragm adsorption device, in which the diaphragm is not easily offset from the bottle mouth.

The application belongs to the technical field of membrane and adsorption separation material preparation, and particularly relates to a MOFs composite film rich in nitrogen atoms and a preparation method and application thereof. The preparation method comprises the following steps: firstly, synthesizing UiO-66-NH2, introducing aldehyde groups on the surface of the UiO-66-NH2 through a condensation reaction, then performing amino functionalization, and finally mixing and crosslinking to obtain the MOFs film rich in nitrogen atoms. The MOFs composite film prepared by the application has good uniformity, high mechanical strength and good flexibility, and is simple and convenient to form into a film, can be used as a separation membrane for adsorbing and removing heavy metal ions in water, and can also be used for enriching and recycling rare and precious metals in metallurgical wastewater. The MOFs composite film prepared by the application has high selectivity and large adsorption capacity for molybdenum ions, and has very significant application value.

A chromatography system is provided. The chromatography system is configured to process a feed fluid containing a plurality of components, wherein at least one component of the plurality of components of the feed fluid is a target component. The chromatography system comprises: a flow path comprising a plurality of fluid control components configured to control a fluid flow; a stationary phase, wherein the stationary phase is at least one membrane adsorber connected to the flow path and the stationary phase is configured to isolate the target component. The flow path is configured such that harvesting of the target component is optimized.

The invention belongs to the technical field of functional materials, and discloses an amidoxime-based chitosan microporous membrane adsorption material as well as a preparation method and application thereof. According to the amidoxime-based chitosan microporous membrane adsorption material, a chitosan microporous membrane is used as a matrix, and amidoxime groups are grafted on the matrix; the adsorption material has a microporous structure, the average pore size is 0.05-0.3 mu m, and the bacteriostasis rate on escherichia coli and staphylococcus aureus is not lower than 90%. The amidoxime group introduced in the invention has specific chelating ability to uranyl ions. Even in a simulated salt lake brine environment in which high-concentration competitive cations exist, the membrane adsorption material can still maintain high-selectivity adsorption on uranium, the extraction rate can reach 86% or above, and extremely high ion interference resistance is shown. The broad-spectrum antibacterial property of the chitosan base material is creatively utilized, so that the antibacterial rates of the obtained membrane adsorption material on escherichia coli and staphylococcus aureus exceed 90%.

The invention discloses a preparation method and application of a membrane electrode based on an anode catalyst coating film, and belongs to the technical field of membrane electrode preparation and alkaline water electrolysis hydrogen production, and the preparation method comprises the following steps: (1) dispersing an anode catalyst, a binder and an ionomer into a solvent, and carrying out ultrasonic treatment to prepare a catalyst dispersion liquid; (2) adsorbing the anion exchange membrane on a heating plate, and heating the heating plate to a set temperature; spraying the catalyst dispersion liquid on an anion exchange membrane to obtain an anion exchange membrane for adsorbing an anode catalyst; (3) clamping the anion exchange membrane for adsorbing the anode catalyst between two pieces of Teflon cloth, and placing the Teflon cloth between two graphite plates for hot pressing to obtain an anode catalyst coated membrane electrode; according to the preparation method and application of the membrane electrode based on the anode catalyst coating membrane, the problem of substrate interface separation in the traditional catalyst coating substrate technology is effectively solved, so that the ohmic impedance is reduced, and the mass transfer efficiency is improved.

This invention provides a battery separator with ion adsorption capabilities and its preparation method, belonging to the field of new energy battery technology. It solves the problem of battery capacity decay and deterioration of cycle performance caused by ion leaching damaging the SEI film and consuming active lithium. The battery separator of this invention includes a base film and a ceramic coating on at least one surface of the base film. The raw materials for preparing the ceramic coating include porous organic framework materials, metal ion chelating agents, ceramic particulate materials, wetting agents, and binders. This invention significantly improves the dispersion ability of the slurry and shortens the dispersion time by using metal ion chelating agents instead of traditional dispersants. Simultaneously, the use of binders containing specific functional groups crosslinks with the porous organic framework materials and forms a synergistic effect with the chelating agents, thereby jointly enhancing the battery separator's ability to adsorb metal ions. This effectively solves the problem of poor stability in high-energy-density battery systems, thus significantly improving the battery's energy density and cycle life.

The application discloses a high-ionic-conductivity diaphragm and a preparation method thereof. The diaphragm is prepared by using an ultrahigh molecular weight polyethylene as a matrix and a covalent organic framework material as a functional filler through a thermal phase separation method. The introduction of the COF material significantly improves the ionic conductivity, thermal dimensional stability and mechanical strength of the diaphragm, and the diaphragm can be endowed with the characteristics of adsorbing polysulfides and guiding uniform ion deposition through COF channel functionalization. The preparation method is mature in process and easy to scale up production, and the prepared diaphragm is suitable for next-generation high-energy-density and high-safety electrochemical energy storage devices with high performance requirements.

The utility model discloses a kind of flue gas carbon dioxide low-temperature condensation purification systems, it is related to flue gas carbon dioxide processing technical field.The utility model includes, condensing structure, including conveying pipe, condensing box of sleeving in conveying pipe one side outer wall, liquid nitrogen tank located conveying pipe rear side, heat exchange pipe that is snakelike distribution in condensing box interior and outer wall is flat and is communicated with liquid nitrogen tank output end, conveying port that is staggered distribution between heat exchange pipe, the shrink nozzle of annular array distribution in conveying pipe one end and corresponding heat exchange pipe;Drying structure, including cylinder one and cylinder two located condensing box one side, net cylinder located cylinder one and cylinder two interior, drying agent that is granular in net cylinder interior.The utility model is set to condensing section structure, avoid under high temperature CO2 plasticization effect enhancement, polymer chain spacing expansion, support layer and skin layer thermal expansion shrinkage or skin layer peeling, affect carbon dioxide purification process membrane adsorption stability problem.

This utility model discloses a flue gas carbon dioxide membrane adsorption purification device, relating to the field of carbon dioxide membrane adsorption technology. The utility model includes a cold treatment structure comprising a membrane adsorption purification cylinder, a second mixing cylinder connected to the membrane adsorption purification cylinder via a pipe, a first mixing cylinder connected to the second mixing cylinder via a pipe, a pre-cooling cylinder located on one side of the first mixing cylinder, a cooling cylinder and a drying cylinder located below the pre-cooling cylinder and connected via a pipe, a liquid nitrogen tank located in front of the cooling cylinder, a spiral tube connected to the output end of the liquid nitrogen tank and spirally distributed inside the cooling cylinder, a desiccant located inside the drying cylinder, and an air inlet pipe connected to the pre-cooling cylinder and the first mixing cylinder; and a mixing structure comprising an installation shaft located inside the first mixing cylinder and multiple sets of stirring rods arranged in a ring array inside the first mixing cylinder. This utility model, by setting a cold treatment structure, solves the problem that polymer membranes are easily deformed by heat during carbon dioxide membrane adsorption purification, affecting the stability of membrane adsorption purification.

The utility model discloses a fast adsorption membrane adsorption device relates to membrane adsorption device technical field, including membrane adsorption member and drainage member, the drainage member is symmetrically installed at the both ends of membrane adsorption member, and the drainage member one side far away from membrane adsorption member is equipped with the capping member, the membrane adsorption member is equipped with the membrane adsorption member. And the side edge of the membrane adsorption component is connected with the combined component. According to the membrane adsorption device capable of achieving rapid adsorption, drainage components are symmetrically arranged at the two ends of the membrane adsorption component, and an electric turbofan arranged in the structure rotates at a high speed, so that a medium passing through the interior of the whole device can be disturbed, and the drainage effect is achieved; by means of the structure arrangement of the combined component and the combined use of part of structures of the membrane adsorption component, multiple sets of devices can be combined and spliced according to needs, and series combination of the structures is achieved by using the quick-connection valve head in cooperation with the use of a pipeline.

The present application relates to a kind of minoxidil external solution and its preparation process, including 3 portions minoxidil, 30-40 portions ethanol, 5-7 portions propylene glycol, 0.005-0.02 portions antioxidant, 0.1-0.3 portions chelating agent, 58-60 portions purified water.The present application adds suitable antioxidant and chelating agent, so that minoxidil external solution reduces the generation of oxidation reaction in storage and use process, effectively prevents the problem of long-term storage discoloration, and the stability of the minoxidil external solution is high.By improving the formula and filtering process, microporous filter membrane is used for the original liquid, and repeated filtration is at least 2 times, and the filtration pressure and filtration temperature are repeatedly changed every minute;Finally, the amount of minoxidil adsorbed and retained by microporous filter membrane during filtration is very low (adsorption rate is less than 0.5%), which is significantly lower than the existing level, the stability of the effective component of product is high, and the qualified rate of product is significantly improved.

The invention provides an organic solvent purification method, which comprises: (1) contacting an organic solvent with a 3A molecular sieve adsorption column to obtain a first purification liquid, and embedding a carbon quantum dot coating on the inner wall of the 3A molecular sieve adsorption column; (2) contacting the primary purified solution in the step (1) with a 4A molecular sieve to obtain a secondary purified solution; (3) contacting the secondary purified solution obtained in the step (2) with a neutral alumina adsorption column to obtain a third purified solution; (4) adsorbing the third purified liquid in the step (3) through ion exchange resin to obtain a fourth purified liquid; (5) adsorbing the fourth purified solution in the step (4) through a NaA type polyamide molecular sieve membrane to obtain a purified organic solvent; according to the purification method disclosed by the invention, the near-anhydrous organic solvent with high purity not lower than 99.9% can be finally obtained, the moisture content can reach below 50ppm, the fluorescence wavelength is below 240nm, the absorbance is not higher than 0.1%, and the light transmittance is obviously increased.

The application discloses a kind of based on silicon oxide nanowire polyelectrolyte membrane preparation method and high-efficiency adsorption to heavy metal ions, and its technical scheme main points are: a kind of polyelectrolyte membrane preparation method based on silicon oxide nanowire SiO2 NWs, and polyelectrolyte composite membrane can effectively adsorb heavy metal ions.The application is successfully synthesized by using layer-by-layer assembly method (LBL) by suction filtration device, three-dimensional self-supporting membrane with high efficiency, large capacity and controllable morphology.The specific steps include preparation of SiO2 NWs, amination of SiO2 NWs, and suction filtration to form SiO2 NWs membrane combined layer-by-layer self-assembly technology to finally prepare three-dimensional self-supporting polyelectrolyte composite membrane.The application has simple process, safe operation, and certain practical application prospect.The porosity of polyelectrolyte membrane is high, and it has good heavy metal adsorption and desorption capacity, so it is an ideal membrane adsorption material.

The invention relates to the technical field of chemical equipment, in particular to a water content adjusting device suitable for hexafluoroethane detection, which comprises an adjusting main body, a water inlet pipe, a water outlet pipe and a water outlet pipe, the liquid film adsorption module is arranged at the bottom of the adjusting cavity and comprises a liquid film driving assembly, a liquid flowing rotating disc and a liquid supply assembly, the liquid supply assembly distributes adsorption liquid to the surface of the liquid flowing rotating disc, and the adsorption liquid flows along the surface of the liquid flowing rotating disc under the action of centrifugal force generated by rotation of the liquid flowing rotating disc to form a liquid film; the two-stage drying module is arranged in the adjusting cavity and located above the liquid film adsorption module, and the two-stage drying module sequentially comprises a first drying assembly, a switching assembly and a second drying assembly from bottom to top; and the switching assembly is used for enabling the gas dried by the first drying assembly to enter the second drying assembly or be directly output. The water content adjusting device suitable for hexafluoroethane detection can adjust the treatment process according to the water content of hexafluoroethane to be treated, and the detection accuracy and adaptability are improved.

This invention relates to a method and system for bonding insulating film to a battery pack circuit breaker unit, relating to the field of battery pack manufacturing. The method includes: collecting material distribution data and material property parameters; determining the temperature of the copper busbar region and the plastic region based on the material distribution data and material property parameters; performing differentiated preheating of the product surface in response to the region temperature, and collecting three-dimensional morphological data; calculating a morphological complexity index based on the three-dimensional morphological data; when the morphological complexity index does not exceed a complexity threshold, adsorbing the insulating film onto a bonding fixture, controlling the bonding fixture to move at a bonding angle, and using a roller device located at the rear of the bonding fixture to roll and press the insulating film onto the product surface; when the morphological complexity index exceeds the complexity threshold, immersing the bonding fixture with the adsorbed insulating film and the product in a liquid medium for bonding using a liquid-phase bonding method. This application has the effect of improving the bonding quality of the insulating film.

The invention discloses a recoverable PET composite cover film and a preparation method thereof, and relates to the technical field of PET heat-sealing materials. The recyclable PET composite cover film comprises a PET composite film as well as an isolation part and an adhesive layer which are arranged on the surface of the composite film, wherein the height of the isolation part is greater than the thickness of the adhesive layer. Wherein the adhesive layer is made of a composite adhesive; the PET composite film is prepared by compounding a PET thin film and a barrier film; the barrier film is any one of a PET film, a VMPET film and an alumina-plated PET film. The introduction of the composite adhesive prepared from raw materials such as bio-based polylactic acid glycol, hydroxylated silicon dioxide and an end-capped prepolymer effectively improves the composite strength, recoverability and thermal stability of the PET composite cover film; the introduction of the isolation part at the end far away from the PET composite film improves the inter-film adsorption resistance of the PET composite cover film. Therefore, the method has a wider application prospect.

The invention relates to the technical field of sewage treatment, in particular to a wastewater treatment process based on conductive film coupling adsorption and an electro-Fenton technology. Sewage enters the membrane assembly, and dissolved organic pollutants are adsorbed and removed by a nanocrystalline filter functional layer on the surface of the conductive separation membrane; after adsorption saturation of the nanocrystalline filter functional layer, negative bias voltage is applied to the conductive film, an electrolyte solution containing Fe < 2 + > is injected into the film assembly, O2 is aerated through an aeration device, O2 obtains electrons on the conductive film and is reduced to generate H2O2, generated H2O2 reacts with Fe < 2 + > to generate. OH, and adsorbed organic pollutants are oxidized and degraded. The regeneration of the adsorption capacity of the nanocrystalline filter functional layer is realized. According to the method, long-term stable treatment of the wastewater is realized through adsorption-electro-Fenton regeneration cycle operation, membrane separation, adsorption and electrochemical technologies are fused, dissolved organic pollutants can be efficiently removed, and the method has the advantages of being good in treatment effect, low in energy consumption, easy and convenient to operate and the like and is wide in application prospect.

The invention relates to the technical field of solar thermochemical utilization and hydrogen preparation, and discloses a hydrogen separation and CO2 adsorption synergistic reinforced solar methanol reforming hydrogen production system, which integrates a reaction unit and a separation unit, and solves the problem of reaction separation disjunction of a traditional system. In the prior art, most of a reaction unit, a carbon dioxide removal unit and a hydrogen separation unit are independent equipment and need to be connected through pipelines, and the problems of heat loss, reaction inhibition and the like exist. The membrane-adsorption coupling reaction separation unit adopts an integrated reforming reaction kettle structure of a glass tube, a vacuum region, a heat absorption tube, a reaction region and a hydrogen permeable membrane, and four functions of solar heat absorption, methanol steam reforming reaction, carbon dioxide adsorption removal and hydrogen selective separation are integrated and designed in the same equipment; real-time cooperation of reaction and separation is guaranteed from the space structure, the space utilization rate is improved, meanwhile, heat loss and the reaction inhibition effect are greatly reduced, and the overall efficiency of the system is remarkably improved.

The invention discloses a nanofiber membrane gas adsorption device and a desorption regeneration method thereof, the adsorption device is composed of a closed gas treatment bin, a gas adsorption and desorption bin and gas channels, and the gas channels comprise a gas inlet channel, a gas outlet channel, a gas return channel and a recovery channel; a vacuum pump is connected into a gas inlet channel for vacuumizing, raw material gas is connected into the gas inlet channel for ventilation, gas in a gas treatment bin is heated, a fan is turned on, the heated gas enters a gas adsorption and desorption bin from the gas treatment bin through a gas outlet channel, the gas passes through a nanofiber membrane in the gas adsorption and desorption bin, and a gas return ball valve is turned on; the circulation of the gas in the gas treatment bin and the gas adsorption and desorption bin is realized, so that the nanofiber membrane fully adsorbs the target gas; electrifying the heating iron gauze to enable the nanofiber membrane to reach the required desorption temperature, and connecting a recovery channel into a recovery device to recover the target gas; according to the invention, the adsorption and desorption energy consumption of the nanofiber membrane can be reduced, and the adsorption rate of the nanofiber membrane to the target gas is improved.

The invention provides a laser measuring device for intraocular lens size detection, which relates to the field of intraocular lenses and comprises a base, a placement table, a fixing mechanism, a laser measuring instrument and a multi-axis movement mechanism, the placing table is fixed at the top of the base; the fixing mechanism is arranged on the placing table and is used for fixing an intraocular lens body to be tested; the laser measuring instrument is arranged above the fixing mechanism; and the multi-axis movement mechanism is arranged on the base, is in transmission connection with the laser measuring instrument and is used for driving the laser measuring instrument to move in a three-dimensional space. According to the laser measuring device for detecting the size of the intraocular lens, silica gel film adsorption and contact are adopted, scratches, indentations or stress concentration possibly caused by a metal clamp are avoided, the precise optical surface of the intraocular lens is perfectly protected, and real nondestructive clamping is achieved.

The application discloses a preparation method of a functional carbon membrane and application of the functional carbon membrane in cesium ion separation, and belongs to the technical field of water treatment. The functional carbon membrane material is prepared by taking porous carbon membrane with good conductivity as a base film, loading iron-based oxide on the carbon membrane by using an electrochemical deposition method, and then growing Prussian blue particles in situ. The method can effectively control the loading amount of the Prussian blue particles on the carbon membrane and improve the combination stability between the Prussian blue particles and the carbon membrane. The functional carbon membrane is used for deep treatment of wastewater containing Cs + , and can realize integrated coupling of membrane adsorption and electrochemical adsorption functions. On one hand, the adsorption rate of cesium ions is improved, and the desorption regeneration process of the carbon membrane is simplified. On the other hand, real-time separation of the purified water body can be realized, and the functional carbon membrane has a wide application prospect.

The invention provides a preparation method and application of a semi-interpenetrating network polymer electrostatic spinning membrane adsorption material, and belongs to the technical field of polymer functional materials.The preparation method comprises the steps that N, N-dimethylformamide serves as a solvent to prepare a polyacrylonitrile solution and a hydroxylamine reaction solution; mixing the polyacrylonitrile solution with the hydroxylamine reaction solution for reaction to obtain a polyacrylonitrile-polyamidoxime modified copolymer organic solution; adding 1-vinyl imidazole, methylene bisacrylamide and azodiisobutyronitrile into the obtained organic solution, and reacting to obtain a semi-interpenetrating polymer network organic solution; adding brominated alkane into the semi-interpenetrating polymer network organic solution to react to obtain an electrostatic spinning solution; and carrying out electrostatic spinning and alkali treatment on the electrostatic spinning solution to obtain the semi-interpenetrating network polymer electrostatic spinning membrane adsorption material. According to the preparation method provided by the invention, the prepared semi-interpenetrating network polymer electrostatic spinning membrane adsorption material is good in adsorption performance, low in production cost and good in adsorption effect when being used for extracting uranium from seawater.

The invention discloses a whole membrane process for extracting lithium salt from low-grade and high-impurity brine extracted from an oil field. According to the process, deep pretreatment of NTUlt is realized through oil removal, microfiltration and ultrafiltration membrane groups; the method comprises the following steps: 1, efficiently enriching lithium ions by utilizing an independently researched and developed modular adsorption membrane assembly, greatly reducing fresh water consumption by integrating a WIII water circulation system, reducing the impurity content to be less than 10ppm by adopting an OSN membrane purification technology, and improving the lithium concentration to be more than 18g / L by combining an OsRO high-magnification concentration technology; the method omits a high-energy-consumption MVR evaporation section, has the advantages of high integration level, low energy consumption, low water consumption, remarkable economical efficiency and the like, and realizes green and efficient recovery of lithium resources of complex oilfield brine.

The application relates to the field of medical devices, in particular to a nucleic acid extraction device based on a membrane adsorption method and an extraction method thereof. The nucleic acid extraction device based on the membrane adsorption method comprises a shell and a filter test tube, a reagent tube assembly is arranged on the shell, the reagent tube assembly comprises a plurality of reagent tubes for storing reagents, one end of the plurality of reagent tubes is in communication with the inside of the filter test tube, a liquid adding opening is arranged on each of the plurality of reagent tubes, a pressure plug assembly is rotatably arranged on the shell, the pressure plug assembly can compress each reagent tube independently, and liquid in each reagent tube is compressed into the filter test tube. The nucleic acid extraction method based on the membrane adsorption method comprises the following steps: S1, adding a sample to be tested; S2, adding a plurality of eluents; S3, replacing a test test tube; S4, adding an eluent; and S5, detecting a nucleic acid value. The application has the effects of improving the efficiency of nucleic acid extraction and facilitating the operation of a staff member.

The application discloses a kind of carbon quantum dots for synchronous detection and adsorption treatment bisphenol A, precursor solution is obtained by solvothermal reaction from morpholine and / or morpholine derivative and polyethylene glycol, then heated with amido imidazole compound to prepare;The morpholine and / or morpholine derivative include at least one of morpholine, 4-acetyl morpholine, 4-amino morpholine, morpholine-4-yl acetic acid.The carbon quantum dots of the application have CO2 response function, linear fluorescence cluster extinction phenomenon to bisphenol A at the same time, can also provide active site to enhance membrane adsorption performance, can be used as the detection material and adsorption material of bisphenol A.Biobased composite film prepared from the carbon quantum dots of the application can realize efficient adsorption treatment and real-time reliable monitoring in the application of bisphenol A pollution treatment of industrial wastewater, also has the advantages of wide raw material source, low cost, green and environmental protection, has broad prospects in economic, environmental and social benefits.

This utility model discloses a dust removal device for diffusion membrane processing, including a dust collection box. An electrostatic eliminator is installed at the initial end of the dust collection box, and a diffusion membrane adsorption dust removal device is installed at the end of the dust collection box. This utility model uses a U-shaped adsorption tube to position the suction port on the upper and lower sides of the diffusion membrane, achieving comprehensive dust collection. The sucked-in exhaust gas is pre-filtered through a filter screen, filtering out large particulate impurities, which either adhere to the filter screen or fall into the collection tank. The user can flip the L-shaped limiting plate to release its restriction, allowing for removal and cleaning. By installing a water collection ring plate and atomizing nozzles inside the spray cylinder, the exhaust gas can be further dusted, ensuring that the gas is discharged indoors without affecting the surrounding environment or human health. Wastewater is collected in a collection box and can be easily poured out.

The invention discloses a method for directly measuring critical micelle concentration of an amphiphilic polymer. The method comprises the following steps: establishing a standard curve of the amphiphilic polymer; preparing an amphiphilic polymer aqueous solution with a series of concentrations as an ultrafiltration sample; carrying out ultrafiltration treatment on the ultrafiltration sample, collecting an ultrafiltration solution and a membrane adsorption recovery solution, and diluting to a linear range of a standard curve; the concentration of the amphiphilic polymer in the to-be-detected sample is measured through HPLC-MS / MS and converted into the concentration in an ultrafiltration sample, and the sum of the concentration of the ultrafiltration solution and the concentration of the membrane adsorption recovery solution is the free concentration; a concentration change curve is drawn, the abscissa is the theoretical total concentration of the ultrafiltration sample, the ordinate is the free concentration, and the theoretical total concentration corresponding to the turning point of the free concentration-total concentration curve is the critical micelle concentration of the amphiphilic polymer. Through combination of HPLC-MS / MS and an ultrafiltration technology, the concentration of free molecules is directly separated and detected, the method is more accurate and direct than an indirect determination method, and the influence of a fluorescent probe and a dye on a critical micelle concentration determination result is avoided.

The invention relates to a capacitance membrane adsorption structure suitable for thermal power plant chemical wastewater, and belongs to the technical field of thermal power plant chemical wastewater application, the capacitance membrane adsorption structure comprises an adsorption box and two electrode plates, the adsorption box is provided with a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe are both provided with valves, and the two electrode plates are both vertically arranged. The two electrode plates are fixedly installed in the adsorption box in parallel at intervals, a plurality of arc grooves are formed in the surfaces of the sides, close to each other, of the two electrode plates in a sunken mode, capacitance film bodies are arranged on the sides, close to each other, of the two electrode plates in an attached mode, and the capacitance film bodies are attached to the arc grooves; and the electrode plate is electrically connected with a power supply assembly. According to the invention, more ions can be accommodated and adsorbed, so that the flushing efficiency is reduced, the use cost is lower, and meanwhile, the flushing effect on the surface of the capacitor film is better.

This invention relates to the field of uranium adsorption materials, and particularly to a method for preparing and applying a sulfonated aromatic uranium adsorption membrane. A polymer is dissolved in an organic solvent to obtain a casting solution; the casting solution is then used to prepare a membrane, resulting in the sulfonated aromatic uranium adsorption membrane. The polymer's structural formula is shown in Formula I. This invention provides a novel sulfonated aromatic uranium adsorption membrane suitable for uranium extraction from seawater. This invention develops a uranium adsorption membrane containing sulfonic acid groups and amide groups. The sulfonic acid groups, which specifically recognize uranium, and the hydrophilic amide groups endow the membrane adsorption material with excellent uranium adsorption kinetics and adsorption efficiency. Experimental results show that the sulfonated aromatic uranium adsorption membrane prepared using the method of this invention has an equilibrium adsorption time of 120 min and a uranium enrichment efficiency of 95.8%.