34results about How to "Give full play to the adsorption" patented technology

The invention relates to a preparation method of an aminated nanofiber membrane with a high specific surface area. The preparation method comprises the following steps of: dissolving two polymer materials with the weight ratio of 1: (0.1-10) or dissolving a polymer material and an inorganic salt into a solvent, dissolving while stirring at the temperature of 20-80 DEG C for 4-96h, and carrying out electrostatic spinning to obtain a composite nanofiber membrane; soaking the composite nanofiber membrane into water, regulating the pH value, soaking at the temperature of 20-95 DEG C for 2-48h, washing and drying to obtain a nanofiber membrane with a porous micro/nano structure and a high specific surface area; and immersing the nanofiber membrane with a porous micro/nano structure and a high specific surface area into water, adding an amination reaction reagent to carry out amination reaction at the temperature of 50-200 DEG C, then, taking out the fiber membrane, washing the fiber membrane to be neutral, and drying the fiber membrane to obtain the aminated nanofiber membrane with a high specific surface area. The product provided by the invention is applied to fields such as adsorption and separation of precious metal ions, heavy metal ions and transition metal ions, chemical probes, sensors, environment monitoring, catalysts, biological medicines and the like.

The invention discloses an ozone-catalytic functional ceramic membrane, a preparation method thereof and a circulating coating device, relates to the technical field of membrane material preparation, and aims at solving the problems that the ozone-catalytic efficiency of the existing ceramic membrane is low, the integration of membrane filtration and ozone-catalytic functions cannot be realized, membrane pollution cannot be effectively relieved and the like. By using a tubular ceramic membrane as a carrier, single-component or multi-component metal oxides are loaded through an impregnation method, then manganese oxide dipping coating solution is prepared, and a catalytic coating layer is prepared on the surface of the membrane through a layer-by-layer dipping coating method. The invention aims at establishing a stereoscopic multistage catalyst system, simultaneously improving the catalytic efficiency of the separation layer and supporting layer of the ceramic membrane and enabling an ozone-catalytic effect to seep into the entire ceramic membrane to fully realize the overall catalytic effect. Compared with other metal oxides, manganese oxide has better adsorption and ozone-catalytic capacities, and while the ozone-catalytic capacity is improved, the membrane pollution is effectively relieved and the integration of multiple functions such as pollutant adsorption, ozone-catalytic oxidization and membrane separation is realized.

The invention discloses a method for preparing a hydrotalcite like compound/attapulgite composite material. The method comprises the steps of: (1) adding distilled water to attapulgite clay, agitating and dispersing for 0.5 hour to obtain 0.01-0.03% supernatant solution; (2) sequentially adding a surfactant, magnesium nitrate and aluminium nitrate, agitating for 0.5 hour; (3) slowly dropwise adding a mixed solution containing alkali and sodium carbonate while agitating, continuing agitating for 1 hour after dropwise adding is finished; (4) standing and aging for 1 hour after agitation is finished; and (5) carrying out suction filtration to neutral property, and drying at 60 DEG C, so as to obtain a white composite material product.

The invention discloses an indoor air disinfecting and killing module for airborne virus epidemic prevention. The module is characterized in that the lower part of a module shell is provided with a machine body quick-mounting structure for quickly connecting a terminal, and the upper part of the module shell is provided with an air outlet protection structure. A protection net, a plasma generationdevice, a photocatalyst net film, a UVCLED array light source and an ultraviolet ion absorption net film are sequentially arranged between the machine body quick-mounting structure and the air outletprotection structure from bottom to top, and the plasma generation device and the UVCLED array light source are electrically connected with an electrical control box. Air sequentially passes throughthe protection net, the plasma generation device, the photocatalyst net film and the UVCLED array light source, is filtered by the ultraviolet ion absorption net film and then is exhausted. The moduleis high in single cycle efficiency, easy to deploy and controllable in cost, has higher inactivation efficiency on common airborne viruses such as 2019-nCov, can be directly deployed in an existing air purification system, is safe and efficient in sterilization process, does not cause secondary pollution, and effectively meets the urgent requirements of virus epidemic prevention and disinfectionand killing in air of hospitals, classrooms, shopping malls and families.

The invention discloses a method for preparing iron oxide red from a titanium dioxide byproduct ferrous sulfate, a product and application of the product, and belongs to the technical field of magnetic materials. The method comprises the following steps: S101, purification and impurity removal; S102, oxidation synthesis; and S103, roasting, crushing and screening, wherein a silicon removal agent adopted for purification and impurity removal is a compound of polyferric sulfate, cationic guar gum and sodium alginate. According to the invention, by reasonably matching a plurality of inorganic andorganic high-molecular polymers, the coagulating sedimentation effect, the electric neutralization capability and the bridge frame adsorption effect of the silicon removal agent are fully exerted, the silicon impurity in ferrous sulfate is effectively removed, the feeding speed of a ferrous sulfate solution and an alkaline solution is accurately controlled in the oxidation synthesis process, hydrated iron oxide precipitate which is good in consistency, easy to filter and wash and high in activity is obtained, and an iron oxide red product high in purity and good in performance is successfullyprepared by further setting a reasonable roasting system.

The invention provides an adsorbent for removing LDL. The adsorbent is composed of porous composite fibers and comprises a hydrophilic carrier as an adsorbent base and glutamic acid as a ligand and the porous composite fibers have aperture sizes of 30-80nm. The invention also provides a preparation method of the adsorbent. The preparation method utilizes an electrostatic spinning technology. The porous composite fibers can provide an enough large porous structure and produce carrier adsorption performances. Glutamic acid is a human essential amino acid, has no safety hidden trouble, comprises a pGlu long chain containing a large amount of carboxyl groups, provides abundant binding sites for LDL adsorption, can remove LDL in blood according to an electrostatic bonding principle and greatly improves material adsorption performances by synergism of the ligand and the carriers. The adsorbent is prepared by simple processes under mild conditions, and the molecular chain mixed in the carriers does not shed easily so that ligand shedding-caused safety problems are reduced.

The invention relates to a nanometer modified bamboo charcoal shell carving and a manufacturing method thereof. The shell carving is characterized in that a natural shell is inlaid in a charcoal carving. The manufacturing method for the nanometer modified bamboo charcoal shell carving comprises: (1) taking bamboo and nanometer TiO2 as raw materials and adopting a pyrolysis process with charring temperature between 600 and 800 DEG C to prepare nanometer modified bamboo charcoal; (2) taking the nanometer modified bamboo charcoal as a raw material, well mixing 100 portions of nanometer modified bamboo charcoal with 1 to 11 portions of water-soluble adhesive, pouring a mixture of the nanometer modified bamboo charcoal and the water-soluble adhesive into a prefabricated die, molding and curing the mixture for 1 to 2 hours at normal temperature and carving the mixture into the charcoal carving; and (3) inlaying the natural shell in the charcoal carving so as to form the nanometer modified bamboo charcoal shell carving. Compared with the common charcoal carving, the shell carving not only has the functions of decorating indoors, purifying air and regulating humidity, but also can degrade adsorbed harmful gas into CO2 and H2O, thereby giving full play to adsorption performance and degradation functions.

The invention discloses a diatomite drying agent and a production process thereof. The diatomite drying agent comprises low-Si-content diatomite powder, high-Si-content diatomite powder and water; the volume ratio of the low-Si-content diatomite powder to the high-Si-content diatomite powder is 1: (0.5-1.5); the low-Si-content diatomite powder is obtained by winnowing low-Si-content diatomite of which the SiO2 weight content is 50-65% till 120 meshes or more; the high-Si-content diatomite powder is obtained by calcining high-Si-content diatomite of which the SiO2 weight content is 65% or higher at 900-1000 DEG C for 20-28 hours, and then winnowing calcined high-Si-content diatomite till 80 meshes or more; the weight of water accounts for 3% or lower of the total weight of the diatomite drying agent; the diatomite drying agent is obtained through forming, drying, screening and packaging. The diatomite drying agent and the production process have the advantages that the self-owned bonding property of diatomite is utilized, so that any chemical preparations need not to be added, and the problem of difficult diatomite forming can be solved.

The invention discloses low-temperature-resistant asphalt concrete and a preparation method thereof. The low-temperature-resistant asphalt concrete is prepared from the following substances: coarse aggregate, fine aggregate, mineral powder, asphalt and diatomite. The low-temperature-resistant asphalt concrete disclosed by the invention has outstanding ageing resistance and fatigue resistance; thelow-temperature-resistant concrete has the advantages that good temperature resistance is kept under high and low temperature conditions, cracking of the low-temperature concrete is avoided, excellentfatigue resistance and loosening and cracking resistance are achieved especially in low-temperature seasons and weather alternation seasons of a seasonal freezing area or a cold temperature area, theservice life of the concrete is prolonged, and the preparation is convenient.

The invention relates to solid feed containing propylene glycol. The solid feed contains the following raw materials in percentage by dry weight: 40wt%-66wt% of compound feed carriers, 24wt%-55wt% ofpropylene glycol and 4wt%-10wt% of water, wherein the compound feed carriers contain a disperse carrier and an absorption carrier. The invention also relates to a method for preparing the solid feed containing the propylene glycol, and the method comprises the following steps: pulverizing the disperse carrier and the adsorption carrier separately, and then performing mixing to obtain the compoundfeed carriers; spraying the compound feed carriers with the propylene glycol, performing sealed preservation for 2-48 hours at room temperature after mixing, and breaking down the obtained solid feedcontaining the propylene glycol selectively to obtain a granular or powdered solid feed product. The preparation method provided by the invention is simple and convenient in operation and can solve the problem that liquid state propylene glycol needs to be drenched. Furthermore, the solid feed containing the propylene glycol solves the problem of inconvenience in long-distance transportation of the liquid state propylene glycol and also provides convenience for directly feeding livestock or serving as a raw material for preparing complete feed.

The invention relates to a braider special for sewage treatment carbon fiber ecological aquatic plants and belongs to the field of braiders. The braider comprises a braiding transmission device, a cutting-off device and a take-up device and is characterized in that the bottom plate of the braiding transmission device is connected with a frame, the top plate of the braiding transmission device is connected with the bottom plate, a drive plate penetrates the top plate to sleeve a drive plate shaft, a spindle is clamped to the drive plate, a transmission gear is arranged between the top plate andthe bottom plate, and a motor meshes with the transmission gear; the braiding transmission device is mounted on the frame, the take-up device is arranged above the braiding transmission device, and the take-up device is mounted on one side of the frame through a take-up support, a spline shaft is connected to the upper end of the frame, and the cutting-off device is connected to the spline shaft.The braider has the advantages that picked fibers in the braided fabric are automatically cut off one by one during braiding to allow the carbon fibers to disperse in water one by one, and blocking is avoided; the specific surface area and adsorption performance of the carbon fibers are brought into full play, and the sewage purification effect is increased; the braider is simple in structure, convenient to operate, low in cost, capable of saving manpower and financial resources and capable of increasing production efficiency and product quality.

A trace ozone-aeration biofilter integrated reactor resisting impact load is disclosed. An inner and outer cylinder sleeve type structure is adopted by the reactor. An inner cylinder sleeve is adopted as a trace ozone pre-oxidation unit. One part of an outer cylinder sleeve is adopted as a water storage tank, and the other part of the outer cylinder sleeve is adopted as an aeration biofilter. The bottom of the inner cylinder sleeve is provided with an ozone aeration device, and the upper part of the inner cylinder sleeve is provided with a water discharging zone opening. The upper part of the water storage tank is provided with a water dropping device connected to the water discharging zone opening. A baffle plate is between a water storage zone and the aeration biofilter. The bottom of the baffle plate is provided with a micropore separating plate. The bottom of the aeration biofilter is provided with an aeration device, the aeration biofilter is filled with a filler, and the upper part of the aeration biofilter is provided with a water outlet. The reactor integrates trace ozone pre-oxidation and functions of the aeration biofilter, utilizes ozone oxidation to convert macromolecule organic matters into small-molecule compounds to increase biodegradability of waste water, and allows the aeration biofilter to be operated efficiently, thus achieving an objective of removing residual pollutants in the waste water and deeply treating landfill leachate.

The invention provides a stacked three-dimensional rocking chair type capacitive deionization device. The deionization device comprises a plurality of cavity mechanisms sequentially arranged in the stacking direction, wherein each cavity mechanism comprises a body and a cavity which is formed in the body and penetrates through the body in the stacking direction, and a fixing part for fixing a three-dimensional electrode convexly extends on the inner wall of the cavity; sealing plates are arranged on the free end surfaces of the cavities at the two ends in the stacking direction; at least one of the adjacent three-dimensional electrodes is a blocky Ag@C three-dimensional electrode; a cation exchange membrane is arranged between every two adjacent cavity mechanisms; a current collector electrically connected with the three-dimensional electrode is further arranged on each cavity mechanism, the current collectors extend out of the body, and a water inlet pipeline and a water outlet pipeline which are communicated with the cavity are further arranged on the body. According to the invention, by means of changing the current direction of the current collector in the cavity mechanism, large-scale concentration and purification can be continuously carried out, the treatment capacity is large, and the efficiency is high.

The present invention provides a food sewage treatment flocculant preparation method, which comprises: dissolving dimethyl diallyl ammonium chloride and an acrylamide monomer in distilled water according to a ratio of 1:1-10 to form a solution with a concentration of 20-40 wt%; respectively preparing potassium persulfate and sodium sulfite as initiators, and preparing cerium sulfate as a catalyst; taking liquid water glass with a modulus of 2.8-3.5, diluting the water glass with water, adjusting the content to achieve a silica content of 2-10 wt%, loading the solution onto an exchange column filled with a cation exchange resin to obtain a silica sol dilute solution with a sodium oxide content of less than 1 wt% and the pH value of less than 1-4; and carrying out reaction polymerization to obtain the food sewage treatment polysilicic acid/polyacrylamide composite flocculant. According to the present invention, the flocculant is used for food sewage treatment or drinking water and wastewater treatment, can effectively remove floating impurities and water-soluble pigments in food sewage, and is suitable for industrial production and applications.

The invention discloses a metal and carbon-based material electrode surface carbon nano tube coating and a preparation method thereof and belongs to the technical field of semiconductor coatings. Thecarbon nano tube coating comprises a carbon nano tube and a metal framework. A carbon nano tube coating precursor comprises a metal salt solution, a surface functionalized carbon nano tube and an organic solvent. The metal and carbon-based material electrode surface carbon nano tube coating is generated after a reaction through a thermal-decomposition idea. The preparation method of the metal andcarbon-based material electrode surface carbon nano tube coating includes the following steps that the surface functionalized carbon nano tube is dispersed in the organic solvent for ultrasonic treatment, and a stable dispersed system is formed; and the metal salt solution and carbon nano tube dispersion liquid are mixed uniformly and then applied to the surface of an electrode, drying is performed in a drying box, a thermal decomposition reaction is performed in a tube furnace, and thus the carbon nano tube coating on the surface of the electrode is prepared. The specific surface area of thecoating prepared through the method is large, a catalytic action of the carbon nano tube is fully utilized, the preparation method and process are simple, and the industrialized production is facilitated.

The invention discloses environment-friendly iron oxide red for permanent magnetic ferrite and a preparation method. The method comprises the steps of A, screening, B, grinding and silicon removal, C,pre-oxidation, D, re-oxidation, E, annealing, F, powder preparation and G, testing, wherein chemical component analysis is conducted on the iron powder in the step of testing. According to the method, firstly, iron scales are dissolved, then various inorganic and organic high-molecular polymers are added, on the basis of a polyferric sulfate and cationic guar gum composite silicon removal agent,high-molecular polymer sodium alginate is added, the high-molecular polymer sodium alginate can be used as a carrier to adsorb colloidal silicon particles in a solution, meanwhile, the sodium alginatecan enable the polyferric sulfate and the cationic guar gum to stably exist in a weakly acidic system, and the coagulating sedimentation effect, the electric neutralization capability and the bridgeadsorption effect of a silicon removal agent are fully exerted, so that the purpose of deep silicon removal is achieved.

The invention discloses a titanium dioxide/hydroxyapatite composite photocatalytic material. The composite photocatalytic material is structurally prepared by coating the surface of hydroxyapatite with titanium dioxide; the titanium dioxide is anatase type, and the grain diameter is 5-20 nm; the hydroxyapatite is in the shape of flake and 0.5-2 microns in length. The composite photocatalytic material has good structural stability and excellent photocatalytic degradation performance. The invention further discloses a preparation method and application of the titanium dioxide/hydroxyapatite composite photocatalytic material.

The invention discloses a preparation method and application of a vinegar residue biomass charcoal-molybdenum disulfide composite material. The composite material is obtained by thermally cracking vinegar production industrial waste-vinegar residue as a raw material to prepare biomass charcoal, and synthesizing molybdenum disulfide (MoS2) nanosheets on the surface of the biomass charcoal by adopting a hydrothermal method. The composite material is prepared from wastes, has a porous structure, a large specific surface area and strong adsorption capacity, can obviously reduce the COD (Chemical Oxygen Demand) of oilfield sewage, has a huge application potential in treatment of industrial sewage such as oilfield sewage and printing and dyeing sewage, and provides a new method for recycling of vinegar residue wastes for vinegar making enterprises.