354 results about "Polyelectrolyte" patented technology

The present invention relates to a humidity sensor, and more particularly, to a resistance film-type real-time chromogenic humidity sensor produced with a polyelectrolyte thin film. The humidity sensor according to the present invention is a chromogenic hygrometer in which a polyelectrolyte nano thin film that absorbs moisture is formed on a reflective layer, and the nano thin film varies terms of color and electrical resistance as moisture is absorbed and the thickness varies. The hygrometer according to the present invention is a dual-function hygrometer, the color and resistance of which vary. Provided is the chromogenic hygrometer in which the sensor made using a PSS-b-PMB thin film varies in color between purple, blue, green, yellow, orange, and red according to humidity at a very high response speed of within one minute.

The invention relates to the technical field of food fresh-keeping materials, in particular to a chitosan-curcumin nano-composite fresh-keeping agent and a preparation method thereof.The chitosan-curcumin nano-composite fresh-keeping agent comprises nano-particles of a chitosan-sodium alginate-oxidized sodium alginate interpenetrating network structure, according to the nanoparticles, protonated amino groups of chitosan and carboxyl groups of sodium alginate form a polyelectrolyte compound core, aldehyde groups of oxidized sodium alginate and amino groups of chitosan are subjected to a Schiff base reaction to form a chemical cross-linked network, and zinc ions, amino groups of chitosan, carboxyl groups of sodium alginate and carboxyl groups of oxidized sodium alginate form coordination cross-linking; curcumin and epigallocatechin gallate form a compound through a hydrogen bond and a hydrophobic effect, the compound is embedded in an interpenetrating network structure, beta-diketone groups of curcumin and zinc ions form chelating coordination, a chitosan-sodium alginate-oxidized sodium alginate ternary interpenetrating network is constructed, and the chitosan-sodium alginate-oxidized sodium alginate ternary interpenetrating network structure is formed. The stability is improved by utilizing the synergistic effect of triple mechanisms of electrostatic interaction, Schiff base chemical bonds and zinc ion coordination.

The invention discloses a normal-temperature bacteria liquid enteric-coated targeted colonization microcapsule and a preparation method thereof. The invention belongs to the technical field of biological medicine. The structure of the room-temperature bacterial liquid protection microcapsule is as follows: an inner layer is an activity maintaining layer and mainly consists of a sodium alginate-calcium chloride polyelectrolyte compound (the thickness is 50-100 microns); the middle layer is a pH response release layer and is mainly composed of hydroxypropyl methyl cellulose phthalate (HPMCP, dissolved at pH of 6.8 or above) and nano calcium carbonate particles (the particle size is 50nm, and the proportion is 10% w / w); the outer layer is a mucous membrane adhesion layer, and the main components of the mucous membrane adhesion layer comprise fucose modified chitosan (Fuc-CS, targeted colonic mucous membrane lectin protein) and carbomer 940 (pH sensitive adhesion polymer); the method is a microcapsule capable of preserving the bacterial liquid at normal temperature and accurately targeting colon release and adhesion colonization and a process thereof, the problem of flora activity loss caused by a freeze-drying process can be solved, in addition, the process does not need freeze-drying equipment, and the production cost is reduced.

The invention belongs to the technical field of thermoelectricity, and relates to a preparation method and application of a quasi-solid thermoelectric material capable of realizing humidity stability by means of phase separation regulation, the preparation method comprises the following steps: dissolving a negatively charged hydrophilic monomer, an electrically neutral monomer, a cross-linking agent and a photoinitiator in a solvent to obtain a precursor solution, and carrying out an ultraviolet polymerization reaction to form polyelectrolyte gel; mixing the eutectic solvent with an electrolyte aqueous solution containing redox ion pairs and lithium chloride to obtain a quaternary electrolyte system; and immersing the gel into a quaternary electrolyte system, and fully replacing the internal solution through a diffusion effect to obtain the quasi-solid thermoelectric material with stable humidity. The thermoelectric material has the advantages of excellent Seebeck coefficient, good stability, high mechanical strength, large power density and the like, can supply power to wearable electronic products in an actual humidity fluctuation environment, breaks through the main bottleneck of actual application of quasi-solid ionic thermoelectric materials based on ionized water gel, and is wide in application prospect.

The invention belongs to the technical field of soil organic matter improvers, and discloses a soil organic matter improver based on a compound microbial agent and a preparation method thereof, and the soil organic matter improver comprises the following components: a compound enzyme, a modified chitosan microsphere complex, a modified polyelectrolyte, an inhibitor L-methionine sulfoximine, a substrate, an auxiliary factor and the compound microbial agent. A compound enzyme system is used as a core, soil ammonium ions are circularly and efficiently assimilated through glutamine synthetase / glutamate synthetase, and the soil ammonium ions are converted into organic nitrogen; and energy guarantee is provided by virtue of polyphosphate kinase. The modified chitosan microsphere complex is used for protecting and slowly releasing enzyme and a substrate, and controlled release of the inhibitor L-methionine sulfoximine is realized through the modified polyelectrolyte, so that carbon-nitrogen balance of soil is regulated and controlled. The system has a synergistic effect with a compound microbial agent, the problem of soil organic matter reduction caused by excessive nitrogen application is effectively solved, meanwhile, the crop root biomass is remarkably increased, and the soil organic matter content is increased.

The invention relates to the field of water treatment, and discloses a scale and corrosion inhibitor for seawater circulating cooling water, which is prepared from phosphonic acid grafted maleic anhydride-acrylic acid copolymer, hydroxyethylidene diphosphonic acid, amino trimethylene phosphonic acid, N, N-dimethylformamide, N, N-dimethylformamide, N, N-dimethylformamide, N, N-dimethylformamide, N, N- The anti-corrosion coating is prepared from the following raw materials: N, N-diethylaminomethyl-benzotriazole, gamma-aminopropyltriethoxysilane, zinc salt and a polyoxyethylene-polyoxypropylene block copolymer. The core of the invention is that all the raw material components form the thermo-sensitive polyelectrolyte compound through a self-assembly process. The compound is stably dispersed at low temperature by utilizing the cloud point effect of the block copolymer, and is subjected to phase change and preferential deposition on a high-temperature heat exchange surface, so that targeted and efficient delivery of various active components is realized. According to the invention, the problems of incompatibility of components and poor stability of a traditional compound agent are solved, the product has excellent storage stability, and efficient and synergistic corrosion and scaling control can be realized under high-temperature and high-salinity working conditions.

The invention belongs to the technical field related to tumors, and discloses a preparation method of self-developing embolism microspheres. Comprising the following steps: producing calcium alginate microspheres through cross-linking, obtaining polyelectrolyte hydrogel microspheres through electrostatic complexation, and obtaining the self-developing embolism microspheres through amino cross-linking. According to the invention, sodium alginate and polyamino acid are used as raw materials for preparation, so that the preservative is safe and non-toxic and has biodegradability, and the degradation product has no toxic or side effect on human body. The microspheres are prepared by adopting an electrostatic spraying method, organic solvents are not used, and the microspheres are green and environment-friendly and have no toxic residues.

Proton exchange membranes are described. The proton exchange membrane includes: a reinforcing membrane; a continuous non-porous hydrogen recombination catalyst coating, the continuous non-porous hydrogen recombination catalyst coating comprising a mixture of a hydrogen recombination catalyst and a proton conducting ionomer; and a continuous non-porous cross-linked polyelectrolyte multilayer coating, the continuous non-porous cross-linked polyelectrolyte multilayer coating comprising alternating layers of a polycationic polymer and a polyanionic polymer. Catalyst coated membranes incorporating proton exchange membranes and methods of making proton exchange membranes are also described.

The invention belongs to the technical field of contact lens care, and provides temperature-sensitive contact lens eye-moistening gel and a preparation method thereof. The temperature-sensitive contact lens eye-moistening gel is prepared from the following raw materials in parts by mass: a gel matrix, a surfactant, an osmotic pressure regulator, an active component, a chelating agent, a buffering agent and the balance of injection water, the composition of the gel matrix is defined. Chitosan, sodium hyaluronate and polyvinyl alcohol are compounded to serve as a gel matrix, a polyelectrolyte compound is formed, gelation time is shortened, gel strength and swelling resistance are improved, biocompatibility is improved, and drug-loaded delivery of active ingredients is achieved; the gel matrix and the surfactant are reasonably selected, the viscosity of the solution is increased, the gelation time is shortened, the excellent effect of relieving eye fatigue and dryness is achieved, the wearing comfort of the contact lens is remarkably improved, and the oxygen permeation effect of the contact lens is not obviously reduced after gel forming.

The invention discloses an anti-seepage and anti-corrosion concrete mortar admixture for seaport wharfs and a preparation method thereof. The invention relates to a high-performance cement-based composite material which comprises the following components in percentage by weight: 30-50% of Portland cement, 25-35% of surface-etched quartz sand, 5-20% of silica fume, 15-30% of a core-shell structure active substance and 5-8% of an ion response type calcium compensating agent. The core-shell structure active substance takes a micro-nano organic acid salt crystal as a core, and the surface of the core-shell structure active substance is coated with a polyelectrolyte response layer; the calcium compensating agent is formed by compounding calcium oxide and a zirconium phosphate carrier. Accurate crack self-repairing is achieved through a chloride ion triggered shell dissolution and calcium ion gradient release two-stage response mechanism, the anti-permeability grade reaches P18, the chloride ion diffusion coefficient is reduced by 50% or above, and the water-free self-repairing capacity for microcracks (smaller than or equal to 0.6 mm) is achieved.

The invention belongs to the field of water resource purification, and particularly relates to preparation and application of a solar photo-thermal water evaporation material with ammonia resistance and salt resistance. The evaporation material comprises a porous substrate material, polyelectrolyte hydrogel loaded in the substrate material and a photo-thermal material, and the difunctional solar evaporation material with ammonia nitrogen interception and salt resistance is obtained by polymerizing different types of polyelectrolyte hydrogel and photo-thermal material on the inner and outer surfaces of the substrate in situ. The prepared polyelectrolyte hydrogel evaporation material not only can utilize solar photo-thermal efficient evaporation to produce water, but also can utilize charged groups of the polyelectrolyte hydrogel to generate Donnan repulsive interaction on ammonia nitrogen and salt ions, has ammonia nitrogen interception and salt resistance functions, and is suitable for purifying seawater and brackish water polluted by ammonia nitrogen.

The invention relates to an efficient compound emulsifier based on hydrophilic polyelectrolyte, and belongs to the field of colloid and interface chemistry. The composite emulsifier is composed of a hydrophilic polyelectrolyte and an ionic surfactant, and the hydrophilic polyelectrolyte and the ionic surfactant have the same charges in a water phase. The compound emulsifier is an efficient O / W type emulsifier. Wherein the effective concentration of the polyelectrolyte can be as low as 0.001 wt.% of the mass fraction of the polyelectrolyte in a water phase, and the effective concentration of the ionic surfactant can be as low as 0.01 times of the critical micelle concentration (cmc) of the ionic surfactant. The composite emulsifier has good biocompatibility and can be safely used in the fields of food, medicine, cosmetics and the like. The efficient compound emulsifier can greatly reduce the use amount and emission of the surfactant, and has extremely high economic benefits and environmental benefits.

A polyelectrolyte-surfactant complex, a method of removing a toxic substance from contaminated soil or contaminated groundwater using a polyelectrolyte-surfactant complex and a method of making a polyelectrolyte-surfactant complex. The polyelectrolyte-surfactant complex is made from a complexated recombinant intrinsically disordered protein that has been electrostatically conjugated to an anionic surfactant to provide enhanced liquid-liquid phase separation properties.

The invention relates to the technical field of electrochemical energy storage materials, and discloses a gel polyelectrolyte, a preparation method and application and an aqueous zinc metal battery. The electrolyte is of a micron-sized micropore three-dimensional internet porous structure, and the three-dimensional internet porous structure is formed by copolymerization of polymer monomers; the polymer monomers are acrylamide and zinc 2-acrylamide-2-methylpropanesulfonate, the acrylamide provides a hydrophilic amide group, the hydrophilic amide group and a sulfonate group in the zinc 2-acrylamide-2-methylpropanesulfonate form a dynamic hydrogen bond network, the sulfonate group is covalently anchored to a polymer main chain, and the polymer main chain is covalently anchored to form a dynamic hydrogen bond network. And a main carrier Zn < + > is coordinated with-O-and-N-atoms on a polymer chain. According to the invention, salt-free single ion conduction is realized, concentration polarization is inhibited by sulfonate covalent anchoring, a dynamic hydrogen bond network provides excellent water-retaining property, the problem of moisture evaporation of traditional gel is solved, the interface stability is enhanced by coordination of Zn < + > and a polymer chain, the dendritic crystal inhibition effect is remarkable, and the ion transference number is far greater than that of traditional double-ion electrolyte.

The invention is applicable to the technical field of new energy materials and water treatment, and provides solar-driven multifunctional composite hydrogel and a preparation method and application thereof, the multifunctional composite hydrogel comprises dual-network hydrogel, a nanofiber skeleton and functional particles; the double-network hydrogel is formed by interpenetrating and cross-linking a polyelectrolyte hydrogel and a temperature-sensitive hydrogel; the functional particles are loaded in a three-dimensional porous network structure formed by the double-network hydrogel and the nanofiber skeleton. When the device floats on the surface of a water body, efficient solar interface evaporation water production, stable power generation based on the water photovoltaic effect and efficient adsorption removal of nitrogen and phosphorus nutritive salt in the water body can be synchronously achieved under illumination, and therefore algae growth is inhibited. According to the invention, the integrated collaborative management of water collection, energy conversion and ecological restoration is realized, the preparation process is simple, the environmental adaptability is high, and an innovative scheme is provided for solving the distributed water-energy supply and ecological environment problems in coastal, island and other regions.

The invention relates to the field of vanadium and chromium separation, and particularly discloses a method for removing impurities phosphorus, chromium and silicon in a sodium modified vanadium solution, which comprises the following steps: S100, adjusting the pH value of the sodium modified vanadium solution to enable the pH value of a solution system to be 8.0-9.0 at room temperature to obtain a pretreated sodium modified vanadium solution; s200, heating the pretreated sodium vanadium solution, sequentially adding a reducing agent and a polyelectrolyte into the solution while stirring, and carrying out phosphorus and chromium removal reaction while stirring; s300, after the removal reaction of phosphorus and chromium is carried out for a period of time, adding a silicon removal agent, and carrying out a removal reaction of silicon; and S400, after the silicon removal reaction is finished, standing sedimentation and solid-liquid separation are carried out, impurity-removed slag is washed with water and then merged into the filtrate, and purified vanadium liquid is obtained. According to the method, firstly, glucose is adopted to selectively reduce hexavalent chromium into trivalent chromium under the weakly alkaline condition, pentavalent vanadium is not reduced, the trivalent chromium forms chromium phosphate and chromium hydroxide precipitates in a weakly alkaline solution, and meanwhile, the chromium removal efficiency is improved in a polyelectrolyte coagulation mode.

The invention relates to a high-conductivity low-creep polyelectrolyte elastomer as well as a preparation method and application thereof. The high-conductivity low-creep polyelectrolyte elastomer is polymerizable ionic liquid directly synthesized by hydroxyl ionic liquid and alkenyl-containing acyl chloride compounds through one-step reaction; the obtained ionic liquid is mixed with a neutral chain segment, a photoinitiator and a cross-linking agent are added to form a precursor solution, free radical polymerization is initiated by ultraviolet light to obtain the polyelectrolyte elastomer, and the obtained polyelectrolyte elastomer has no obvious creep deformation under 1000 times of cyclic stretching and shows excellent mechanical stability; the high-conductivity low-creep polyelectrolyte elastomer can be used for preparing a flexible ionizing pressure sensor, the capacitance peak value of the prepared flexible ionizing pressure sensor is kept stable in 2000 cycle tests, and excellent low-drift performance is shown.

A polyelectrolyte hydrogel coating with strong substrate binding performance and a method of manufacturing the same are provided. The method includes: 1) activating a substrate by applying oxygen plasma; and 2) dissolving a polycationic polymer, a polymeric monomer, a silane coupling agent and an initiator to obtain a precursor solution, vacuumizing the precursor solution to remove air bubbles, applying the vacuumized precursor solution to a surface of the substrate activated by the oxygen plasma, and performing an in-situ polymerization and curing process under nitrogen or rare gas atmosphere. The polymeric monomer includes at least one of: acrylamide, acrylic acid, hydroxyethyl methacrylamide, 2-acrylamido-2-methyl-1-propanesulfonic acid, polyethylene glycol (diol) diacrylate, 2-methacryloxyethylphosphocholine, 3-[[2-(Methacryloyloxy)ethyl]dimethylammonio]propane-1-sulfonate, and 3-[[2-(methacryloyloxy)ethyl]dimethylammonium] propionate. The silane coupling agent has a carbon-carbon double bond functional group.

The invention relates to the technical field of anion exchange membrane fuel cells, in particular to a cation remote grafting type polycarbazole anion exchange membrane and a preparation method thereof. The membrane is prepared by the following steps: condensing N-(4-bromobutyl) carbazole, N-alkyl carbazole and 2, 3-butanedione to obtain a polymer skeleton, then carrying out Menshutkin reaction on the polymer skeleton and cations to obtain polyelectrolyte, and finally carrying out ion exchange on the polyelectrolyte and sodium hydroxide. Wherein the main chain of the polymer has no unstable ether bond, so that the membrane has strong alkali resistance. The flexible overhanging side chain improves dimensional stability and increases polarity differences. Cations are grafted away from a framework, the alkali resistance of the membrane is improved, the service life is prolonged, hydrophilic / hydrophobic microphase separation is enhanced, an ion transmission channel is formed, and the ion conductivity is high. The membrane has good mechanical strength and flexibility, the tensile strength reaches 55.34 MPa, the elongation at break reaches 22.49%, the application requirements of fuel cells are met, and the membrane has excellent thermal stability and wide application prospects in alkaline anion exchange membrane fuel cells.

The invention discloses multicolor optical anti-counterfeiting alumite and a production process thereof. The alumite sequentially comprises a magnetic-sensitive enhanced substrate layer, a dynamic separation layer, a temperature-magnetic composite nanofiber multicolor layer, a polyelectrolyte alternate deposition barrier layer and a gradient magnetic-sensitive aluminized layer from bottom to top, wherein the magnetic-sensitive enhanced substrate layer, the dynamic separation layer, the temperature-magnetic composite nanofiber multicolor layer, the polyelectrolyte alternate deposition barrier layer and the gradient magnetic-sensitive aluminized layer are arranged on the alumite; wherein the magnetic-sensitive enhanced substrate layer comprises a graphene modified PET supporting layer and a three-dimensional net-shaped micro-channel embedded with Fe3O4 particles, the dynamic separation layer is temperature-sensitive phase change fluororesin, the temperature-magnetic composite nanofiber colorful layer is electrostatic spinning nanofibers of a core-sheath structure, and the blocking layer is of a polyelectrolyte alternate deposition structure and is embedded with infrared invisible identification particles. According to the invention, four anti-counterfeiting functions of multicolor optical response, magnetic response activation and infrared invisible two-dimensional codes are integrated, the advantages of high multicolor optical contrast, fast response, multiple reuse times, excellent barrier performance, stable transfer printing and the like are achieved, the method is suitable for scenes of high-end tobacco and wine, luxury packaging, high-added-value labels and the like, and the anti-counterfeiting grade and the practicability are obviously improved.

An improved Battery Electric Vehicle heat transfer fluids is made diluting a heat transfer fluid concentrate comprising greater than or equal to 85 weight percent of a freezing point depressant; 20 to 80 ppm of calcium ions; an azole compound; 100 to 250 ppm of an inorganic phosphate; and a polyelectrolyte polymer dispersant, wherein the heat transfer fluid concentrate has a pH of 7 to 9.0 and the weight ratio of polyelectrolyte polymer dispersant to calcium ions is 1 to 3 and the weight ratio of inorganic phosphate to calcium is 2 to 4. For use this concentrate is preferably diluted with deionized water usually 50 / 50. The addition of N-methyl-imidazole provides protection against vapor phase corrosion particularly for ferrous metals.

The application discloses a preparation method of polyelectrolyte nanoemulsion for frozen meat preservation and an ice-coating method of the polyelectrolyte nanoemulsion, and has the characteristics that the method comprises the following steps: 1) filtering the thawing juice of collected frozen meat, and then performing ultrafiltration centrifugation by using a 8-10 kDa filter membrane; taking the filtrate, and obtaining an antifreeze peptide powder through freeze-drying; 2) slowly adding water-soluble sodium carboxymethyl cellulose into a chitosan solution to make the final mass concentration of the sodium carboxymethyl cellulose be 0.6-1%, and simultaneously adding the antifreeze peptide powder to make the final mass concentration of the antifreeze peptide powder be 6-10%, and then magnetically stirring to obtain a matrix aqueous solution; and 3) adding soybean oil containing essential oil drop by drop into the matrix aqueous solution with a volume of 8-12 times of the soybean oil, homogenizing by using a high-speed homogenizer, and then performing homogenization treatment by using a high-pressure homogenizer, and repeating the homogenization and the homogenization treatment for 3-8 times, so as to obtain the polyelectrolyte nanoemulsion, and the polyelectrolyte nanoemulsion has the advantages of good adhesion, good preservation effect, the ability to improve the quality of the frozen meat and the ability to prolong the shelf life of products.

This invention discloses an amphoteric petroleum drilling additive and its preparation method. First, furfuryl acrylate, alkenyl sulfonic acid, alkenyl acid, acrylamide, and methacryloyloxyethyltrimethylammonium chloride are polymerized to obtain an amphoteric copolymer. Then, a bismaleimide derivative is added to crosslink with the furan rings on the polymer side chains to obtain the amphoteric polymer. The amphoteric polymer obtained by this invention simultaneously exhibits unique temperature-responsive rheological properties and an anti-polyelectrolyte effect. At low temperatures, it is beneficial for cutter carryover and wellbore purification; at high temperatures, the crosslinked network dissociates, the molecular chains extend, enhancing inhibition and plugging capabilities, and possessing reversible plugging ability, reducing the difficulty of subsequent drilling and unblocking.

The present disclosure provides a method for preparing an artificial ligament with high tensile durability, anti-fatigue, low creep and stress relaxation rate, the artificial ligament prepared therefrom, and a fiber collection platform by interfacial polyelectrolyte complexation spinning. The present disclosure uses interfacial polyelectrolyte complexation spinning process, and equips with the self-designed fiber collection machine to produce micron and millimeter-scale fibers. Combing through the weaving method, it is made into a tailor-made artificial substitute, which is applied to artificial ligaments with high tensile strength and durability, anti-fatigue, and low creep and stress relaxation rate.

The invention belongs to the technical field of medical dressings, and provides a hydrocolloid acne patch and a preparation method thereof. According to the invention, beta-cyclodextrin functionalized gelatin and adamantane functionalized hyaluronic acid are subjected to inclusion interaction to form a reversible cross-linked network, and hydroxypropyl trimethyl ammonium chloride chitosan and sodium carboxymethyl cellulose are subjected to electrostatic interaction to form a polyelectrolyte cross-linked network; the genipin is combined with a primary amine group amido bond to form a triple cross-linked network structure design of a covalent cross-linked network, and antibacterial components such as a gamma-cyclodextrin-salicylic acid inclusion compound are loaded, so that the excellent properties that the self-healing recovery rate is 90-95%, the water vapor transmission rate is 500-900g. M <-2 >. 24h <-1 >, and the peel strength is greater than or equal to 1.0 N / 25mm are realized; the technical problem that an existing hydrocolloid acne patch is insufficient in antibacterial persistence and self-healing and repairing capacity is solved, and wide application value is achieved.

A method of coating a metallic substrate includes immersing a metallic substrate in a polymer composition including a conductive 3,4-ethylene dioxythiophene (EDOT) polymer, a gelatin polyelectrolyte, an antibacterial drug, an organic solvent, and an inorganic salt solute, and further coating the polymer composition onto a surface of the metallic substrate by cyclic voltammetry to form a coating on the surface of the metallic substrate. The coating on the metallic substrate is performed such that the gelatin and the antibacterial drug are uniformly distributed throughout the coating, and the coating has a thickness between 7.0 and 15.0 micrometers. The metallic substrate is a stainless steel (SS). An implantable medical device including a metallic substrate coated by the present method.

A method for recovering nutrients from wet animal manure, the method comprising adding acid to wet manure (1) to lower the pH value of the wet manure to provide acidified wet manure; adding a polyelectrolyte to the acidified wet manure to obtain granulated wet acidified manure (5b); conveying the granulated wet acidified manure continuously into a liquid-solids separator (6) to separate a liquid manure fraction (16) and a solid manure fraction (7); providing a water purification apparatus (9) comprising an electrolytic cell (21), and a substantially vertical separator tower (20) arranged in a flow connection with the upper part of the electrolytic cell (21), conveying the liquid manure fraction to the electrolytic cell (21), operating the electrolytic cell (21) to produce an accumulating floc; conveying the raising floc into the separator tower (20), wherein the floc (19) is separated by expelling from the top of the separator tower (15), and conveying the solid manure fraction (7) and the floc (19) to an aerated bio-oxidizer device (8) to provide oxidized manure; discharging the oxidized manure (10) from the bio-oxidizer device. A system for recovering nutrients from wet animal manure. A fertilizer product (12) comprising nitrogen, phosphorus and potassium encapsulated in spores of Thermoactinomyces. Use of Thermoactinomyces for producing organic fertilizer. Use of a water purification apparatus for treating wet animal manure. Use of a continuously operating aerated bio-oxidizer device.

The invention relates to a preparation method and application of a tooth antibacterial and mineralized dual-function anti-caries material. The anti-caries material provided by the invention comprises two components, namely a mineralizing solution I and a mineralizing solution II. The mineralization liquid I contains polyelectrolyte and soluble salt of antibacterial metal cations; and the mineralization liquid II contains phosphate and fluoride. The pH values of the two mineralizing solutions are both 9.5 + / -0.5. During use, the surface of a demineralized tooth is firstly cleaned, the mineralizing liquid I and the mineralizing liquid II are sequentially coated, flushing is performed after each action for 15 minutes, 1-3 cycles are performed every day, and continuous treatment is performed for 7-14 days. Through polyelectrolyte template guiding and antibacterial metal ion doping, a biomimetic mineralization layer with an antibacterial function is formed on the surface of the demineralized tooth, and the dual functions of antibacterial and remineralization are achieved. The material can significantly recover the mechanical properties of teeth, the elastic modulus and hardness recovery rates respectively reach 68.6% and 62.5%, the dental caries score is reduced by 70% or more, and the dental caries prevention material has an excellent dental caries prevention effect and a clinical application prospect.

The invention discloses a special membrane material for targeted trapping of macrobrachium larvae in water and a preparation method of the special membrane material, and belongs to the field of water environment biological pollution prevention and control. The membrane material is of a multi-layer composite structure and comprises a nanofiber membrane base material layer, an interface adhesion layer and a functional modification layer. The interface adhesion layer is bionic coacervate gel formed by curing hydrophobic polyelectrolyte and phytic acid; the functional modification layer is covalently grafted with a bionic adhesion protein active peptide fragment and a macrobrachium larva chemical pheromone. The material actively attracts larvae to approach through chemical pheromones, high-strength adhesion capture is achieved through bionic peptide fragments rich in aromatic and cationic amino acids, and trapping is integrated. The preparation method comprises the steps of electrostatic spinning of a base material, surface activation, gel coating, functional modification and the like. The material disclosed by the invention has high selectivity and high capture rate on the larvae of the Limnoperna fortunei, is environment-friendly, long-acting and stable, and is suitable for green prevention and treatment of fouling of the larvae of the Limnoperna fortunei in facilities such as water pipelines and pump stations.

The invention relates to the technical field of catalyst carriers, and discloses porous high-hydrothermal-stability spherical aluminum oxide as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) firstly, mixing an aluminum source, water and acid to obtain pseudo sol, and then adding cationic macromolecular polyelectrolyte, a hard template agent and a surfactant into the pseudo sol for mixing; (2) performing ultrasonic treatment and oil ammonia column forming treatment on the product obtained in the step (1) to obtain gamma-Al2O3 spherical gel beads; and (3) aging, washing, drying and calcining the gamma-Al2O3 spherical gel beads obtained in the step (2) to obtain the porous spherical alumina with high hydrothermal stability. The spherical aluminum oxide prepared by the method has a large specific surface area and a lamellar hierarchical pore structure, and is beneficial to loading of a catalyst in the aluminum oxide. And moreover, the hydrothermal stability is obviously improved, the stability of the catalyst in petroleum reforming is obviously improved, and the catalyst has industrial production utilization value and commercial value.