31results about How to "Strong specific adsorption capacity" patented technology

The invention discloses a preparation method and application of a sulfonamide dimethyl pyrimidine molecularly imprinted polymer. Using sulfamethazine as a template molecule, under the condition of methanol solvent, using methacrylic acid and diallylamine as a mixed functional monomer, divinylbenzene as a crosslinking agent, under the action of an initiator, through a constant temperature water bath Precipitation polymerization reaction to obtain sulfamethazine molecularly imprinted polymer. The sulfamethazine molecularly imprinted polymer material obtained in the present invention has good recognition ability for SMZ, and the effect of separating and enriching SMZ is achieved through specific adsorption on SMZ, and has good specific adsorption ability.

The invention provides a multi-stage indoor formaldehyde removing device with sterilization effect. According to the invention, a high-pass filter screen, a water vapor removing layer, a carbon dioxide removing layer, a steel mesh and a formaldehyde removing layer are sequentially installed between an air inlet and an air outlet; the high-pass filter screen is used for filtering dust particles andPM2.5 particles; the water vapor removing layer is made of a silica gel or molecular sieve, and the silica gel or molecular sieve is grown on activated carbon cotton or high-pass fibers; the carbon dioxide removing layer employs a metal organic framework material growing on the activated carbon cotton or high-pass fibers; the steel mesh is sprayed with nanometer silver ions and is provided with aplurality of uniformly-distributed ultraviolet lamps; and the formaldehyde removing layer is a metal organic framework material growing on the activated carbon cotton or high-pass fibers, and the metal organic framework material is doped with a photocatalyst. The multi-stage indoor formaldehyde removing device of the invention can remove PM2.5, dust, water vapor and CO2 gas step by step, therebyefficiently removing formaldehyde and achieving sterilization effect at the same time.

The invention discloses a reusable low-cost silica aerogel oil-absorbing sponge material and a preparation method thereof, belongs to the technical field of environment. The method disclosed by the invention comprises the following steps: synthesizing a silica aerogel precursor from functional group substituted alkoxy silane used as a raw material under the action of surfactant; and under the condition of drying at room temperature and normal pressure, preparing the elastic lipophilic hydrophobic silica aerogel oil-absorbing sponge, The silica aerogel material prepared by the method has low density, satisfactory elasticity, stable performance and favorable lipophilicity and hydrophobicity, and is reusable; and compared with the common silica aerogel, the reusable low-cost silica aerogel oil-absorbing sponge is wider in applicable temperature range, more convenient in manufacturing process, lower in cost and more stable in quality.

The invention discloses a method for efficient and harmless treatment of copper cyanide wastewater in mines, comprising the following steps: step 1, preparation of modified straw ash: adding straw ash to deionized water and ultrasonically dispersing for 30-40 minutes, and the ultrasonic power is 300-40 minutes 400W, then add ferric chloride and aluminum chloride in turn and continue to stir for 20-30min. The modified straw ash used in the present invention is treated with raw materials such as ferric chloride and aluminum chloride, then compounded with modified bentonite, and finally through the establishment of a blending system. The use of straw ash has the potential of resource reuse. The effect is in line with the concept of environmental protection. The modification of bentonite is poured with a modified liquid. The modified liquid can form a pore structure in the bentonite, so that the straw ash enters the bentonite, and finally seals the pores with the microsphere emulsion to prepare the material. Has a strong specific adsorption capacity.

The invention relates to the field of environmental function adsorbents, in particular to a method for preparing a heavy metal ion imprinting material with a microwave-assisted inverse emulsion polymerization method and an application of the heavy metal ion imprinting material. The method includes the steps that heavy metal ions serve as imprinting ions, cyclodextrin matter and acrylamide matter are used as functional monometers, the functional monometers are polymerized in a microwave-assisted mode with the inverse emulsion method, and the imprinting material with the small and even particle size is prepared. The method for preparing the heavy metal ion imprinting material is easy to operate, and the imprinting material has the advantages of being small in particle size, large in specific surface area, high in specific adsorption capacity and the like.

The invention discloses a preparation method of clenbuterol hydrochloride molecularly imprinted polymer microspheres. This preparation method comprises the following steps: 1) mixing nonionic surfactant solution, clenbuterol hydrochloride, porogen, initiator, inorganic nanoparticles, monoene monomer and polyene monomer, uniformly 2) heat the emulsion to react to obtain polymer microspheres; 3) wash the polymer microspheres, then soak the microspheres in acid solution, then take out the microspheres, wash and remove the acid solution, and obtain template removal 4) performing Soxhlet extraction on the template-removed microspheres, and then drying to obtain clenbuterol hydrochloride molecularly imprinted polymer microspheres. The preparation method of the present invention is simple, cost-saving, and environmentally friendly, and the prepared clenbuterol hydrochloride molecularly imprinted polymer microspheres have good uniformity, strong specific adsorption capacity, and high stability, and can be used in the fields of food safety detection and environmental restoration, etc. with broadly application foreground.

The invention discloses a blood-purifying adsorbent for clearing blood bilirubin and a preparation method thereof. The blood-purifying absorbent is fixed on a solid-phase carrier by adopting methacrylate biquaternary ammonium salt as aglucon through a chemical grafting method or a physical film-coating method, wherein the solid-phase carrier is a polymeric adsorbent. Correspondingly, the invention discloses a preparation method of the blood-purifying adsorbent for clearing blood bilirubin. According to the blood-purifying adsorbent disclosed by the invention, methacrylate biquaternary ammonium (PDQ for short) is adopted as the aglucon, so that not only can the special capacity for absorbing bilirubin be achieved, but also the compatibility of the adsorbent is remarkably improved. Meanwhile, the physical and chemical properties are stable, and the cost is relatively low.

The invention discloses a preparation method of a lanthanum hydroxide modified airgel dephosphorization adsorbent, relating to a preparation method of a dephosphorization adsorbent. The purpose is to solve the problems of low saturation adsorption capacity of the current phosphorus removal adsorbent, difficulty in recovery and reuse after adsorption, and low mechanical properties. Preparation method: Mix graphene oxide dispersion, lanthanum hydroxide aqueous solution and sodium alginate aqueous solution and stir vigorously, add crosslinking agent aqueous solution drop by drop to obtain water coagulation beads, crosslink and solidify after standing, and finally wash and wash in sequence dry. The adsorbent of the invention can be reused, has low cost, fast adsorption speed, high adsorption capacity and good mechanical properties. The invention is suitable for preparing the phosphorus removal adsorbent.

A magnetic / nonmagnetic lanthanum sodium carbonate dephosphorization adsorbent and a synthesis method thereof, comprising the following steps: adding a lanthanum salt and an iron salt into a solvent in a certain proportion, and after ultrasonically dissolving, adding a certain amount of a chelating agent and a dispersing agent and precipitant, after stirring vigorously, the mixed solution was sealed in a tetrafluoroethylene-lined stainless steel reactor. The reaction kettle was placed in an oven for reaction, and cooled to room temperature after the reaction was completed. The product is obtained after solid-liquid separation, washed with pure water and ethanol several times, and dried in vacuum. The magnetic / nonmagnetic lanthanum carbonate dephosphorization adsorbent prepared by the invention has complete crystal structure, small size and uniform particle size distribution. Moreover, the experimental conditions are simple, easy to operate, no special equipment requirements, and good reproducibility.

The invention discloses a geopolymer solidified material based on manganese tailings and a preparation method thereof. The raw materials are composed of solid raw materials and liquid raw materials; the solid raw materials are composed of 4.5-5.5% cement and 4.5-5.5% manganese tailings according to the mass percentage , 89-91% polymetallic contaminated soil, the three components are 100%; the liquid raw material is an aqueous solution containing an alkali activator and a water reducer, the mass concentration of the alkali activator is 1-2%, and the mass concentration of the water reducer The concentration is 0.8-1.0%; the solid raw material and the liquid raw material are mixed according to the water-cement ratio of 0.30-0.40. The present invention utilizes soluble SiO in manganese tailings 2 and Al 2 o 3 , Ca(OH) 2 Hydration reaction occurs, which makes kaolin, C-S-H, C-A-H and sodium zeolite gel materials continue to increase, ensuring that the compressive strength of the manganese tailings-based polymer solidified body continues to increase; the acidity in manganese tailings Oxides can also promote active glassy SiO 2 and Al 2 o 3 Dissolution, to ensure the hydration reaction; plus the hydroxide of Mn on Pb 2+ , Zn 2+ It has a strong specific adsorption capacity and has a good physical wrapping effect on heavy metals such as Pb and Zn.

The invention provides a preparation method of triazole molecularly imprinted polymeric microspheres and belongs to the technical field of molecularly imprinted polymers. The preparation method comprises the following steps that triazole compound template molecules, a functional monomer and a pore-foaming agent are mixed, then the mixture is subjected to ultrasound in an oxygen-free environment and then is self-assembled, the self-assembled mixed liquid is mixed with an acrylic cross-linking agent and an azo-initiator, the mixture is prepolymerized, and the obtained prepolymerized reaction liquid is heated and then performs polymerization reaction under the oscillation condition to obtain a polymer; the triazole compound template molecules in the obtained polymer are eluted to obtain the triazole molecularly imprinted polymeric microspheres. The prepared triazole molecularly imprinted polymeric microspheres are single in particle diameter and has good specific adsorption capacity to template molecules and their structural analogues.

The invention provides a rotatable and uninterrupted adsorption-degradation integrated indoor air purification device, which includes a multi-stage adsorption system and a desorption system. Water vapor layer, carbon dioxide removal layer and formaldehyde removal layer; water vapor removal layer, carbon dioxide removal layer and formaldehyde removal layer are installed on different rotatable chassis; the gas detection module is installed at the air outlet, and the extracted air flows from the air inlet to the air outlet , and the formaldehyde concentration at the air outlet is detected by the gas detection module; when the formaldehyde removal layer reaches the set adsorption saturation concentration, it enters the desorption system and is degraded by the ultraviolet lamp. After the water vapor removal layer and the carbon dioxide removal layer reach the set time It enters the desorption system and is heated by a heater for desorption. The invention can efficiently remove harmful gases such as formaldehyde and VOC, and realize the recycling and reuse of materials.

The invention discloses a lanthanum-based loaded magnetic nano-adsorption dephosphorization material and a synthesis method thereof. The preparation method comprises the following steps: Step 1: sequentially adding ferric oxide, chelating agent and lanthanum salt into deionized water and stirring and mixing in sequence Uniform, wherein: the molar ratio of ferric oxide and lanthanum salt is 1:6-5:1; Step 2: put the mixed solution into a polytetrafluoroethylene-lined stainless steel reactor, at a temperature of 120-200°C React for 8-12 hours to obtain the prepared adsorption phosphorus removal material. The magnetic lanthanum-based phosphorus-removing adsorbent prepared by the invention has excellent phosphorus-removal effect, wide pH application range, strong phosphate-specific adsorption capacity, and is easy to recycle and can be recycled.

The invention relates to the field of environmental functional adsorbents, in particular to preparation of a heavy metal ion imprinted material adopting an inverse emulsion and an inverse emulsion polymerization method and an application of the heavy metal ion imprinted material. According to the preparation, heavy metal ions are taken as imprinting ions, a cyclodextrin substance and an acrylamide substance are taken as functional monomers, and the imprinted material with small and uniform particle size is prepared with an inverse emulsion method. A method for preparation of the heavy metal ion imprinted material adopting the inverse emulsion is simple to operate, and the imprinted material has the advantages of smaller particle size, large specific surface area, higher specific adsorption capacity and the like.

The invention provides a preparation method and application of a solid-phase extraction filler and a solid-phase extraction column for basic dyes in food. Among them, the solid phase extraction fillers use functional ionic liquids 1-benzyl-3-methylimidazolium hexafluorophosphate and 1-decyl-3-methylimidazolium hexafluorophosphate, which are very similar in structure to basic dyes, as the main adsorption The reagent has strong specific adsorption capacity for various basic dyes, and does not adsorb impurities such as salts, sugars, pigments, oils, proteins, and starches in food matrices, and can effectively separate impurities and alkalis in the sample to be tested. Sex dyes. In addition, silica gel is used to immobilize the functional ionic liquid to form a loose solid-phase extraction filler, which can also be fully contacted with the extraction liquid of the sample to be tested without extrusion. The sample liquid passes through the packing quickly, which improves the extraction efficiency and shortens the sample pretreatment time. The solid phase extraction column made of the filler can be used for the rapid determination of the basic dye content in food in high performance liquid chromatography, and the determination result is accurate and stable.