30results about How to "No change in adsorption" patented technology

The invention relates to a cationic organic polymer which is obtained by performing a polymerization reaction on a compound containing imidazole groups or pyridine groups and halohydrocarbon in an organic solvent at the temperature of 0-300 DEG C for 0-24h, wherein the ratio of the imidazole or pyridine groups to halogens is 1: 1; the compound containing the imidazole groups or pyridine groups isselected from the following chemical formulas; R1 is an imidazole group or pyridine group, and m, n, p and r are independently selected from integers that are greater than 0; the halohydrocarbon is selected from the following chemical formulas; X is independently selected from F, Cl, Br or I, and m is any integer which is 0 or greater. The invention also discloses application of the cationic organic polymer prepared by the preparation method, which serves as an HTcO4 radical and/or a perrhenic acid radical, in an adsorbent.

The invention belongs to the field of chelate resin materials and provides a salicyhydroximic acid type chelate resin and a preparation method thereof for solving the problem that the existing hydroximic acid can not be repeatedly used in sewage treatment. The preparation method comprises that a ligand salicyhydroximic acid is bonded to the surface of a chloromethylated polystyrene microsphere to obtain the salicyhydroximic acid type chelate resin, and bonding quantity of the ligand salicyhydroximic acid is 0.38-0.43g/g. The salicyhydroximic acid type chelate resin has strong coordination complexing power to metal ions, can realize enrichment recycling of multiple precious metal ions, especially has excellent adsorbability and selectivity to heavy metal ions such as copper, nickel, lead, iron, zinc and chromium and can be effectively applied to treatment of sewage in the industries such as electroplating, electronics and heavy metals and extraction of rare earth minerals; besides, the bonding quantity of salicyhydroximic acid is high, a synthetic process is simple, conditions are mild, time is short, and synthesis is easy to control; and the chelate resin provided by the invention is convenient to use and easy to separate and recycle and can be recycled for 10 times while the adsorbability is basically constant.

The invention belongs to the technical field of papermaking industry and specifically relates to a papermaking wastewater treatment process. Papermaking wastewater is treated by using a coagulation-microelectrolysis-two-stage UASB-biological contact oxidation-ion exchange-activated carbon-ultraviolet disinfection combined process, so that refractory organic matters, suspended matters, SS and microorganisms in the treated papermaking wastewater are efficiently removed. Meanwhile, resin is rapidly regenerated within a short period by using a regeneration solution provided by the invention, and the attenuation of the resin can be delayed due to the addition of sophorolipids and trehalose ester in the regeneration solution, so that the service life of the resin is greatly prolonged, the wastewater decoloration efficiency is increased, and the operation cost is reduced.

The invention discloses a preparation method of magnetic melamine hydrophobic oleophylic sponge. The method comprises the steps: immersing melamine sponge in a toluene solution of a silane coupling agent with a mass fraction of 0.5-1%, after complete immersion, volatilizing a solvent, drying, and carrying out ultrasonic treatment in an ethanol dispersion liquid of nano Fe3O4 and drying to obtain the magnetic melamine hydrophobic oleophylic sponge. According to the invention, the silane coupling agent modified melamine sponge is prepared by adopting an impregnation method; the magnetic melaminehydrophobic oleophylic sponge is prepared through the ultrasonic method, the good performance of the adsorption material is guaranteed by fully utilizing the porous structure of the melamine sponge,and a sponge body is coated with the magnetic material in combination with the ultrasonic technology, so that the action between nano particles is weakened, and the action between the particles and the sponge body is enhanced. The magnetic melamine hydrophobic oleophylic sponge can be recycled through magnetic force, and the adsorption performance of sponge oil after multiple times of circulationis almost kept unchanged.

The invention relates to a multifunctional antigas tapestry, which is mainly used to overcome the defect of the prior common tapestry with only appreciation of art and without absorption function for noxious gas and radiation ray. The multifunctional antigas tapestry is characterized in that the tapestry can be made by taking the activated carbon fiber yarn as raw material and using the weaving method of common carpet; or taking the activated carbon fiber felt as raw material and coating a layer of cotton or silk fabric with flare or other artistic effect on the felt surface (the felt surface must be polished before processing) based on the coating technique; or taking the activated carbon fiber fabric as raw material and printing the various decorative textures and patterns on the fabric surface after sewing with stacked layers; or taking the yarn mixed with activated carbon short fiber and terylene short fiber as raw material and using the weaving method of common carpet. The multifunctional antigas tapestry has the advantages that the tapestry can adsorb the toxic gas and the harmful radiation ray emitted by the decorative materials in living room, so the tapestry has not only the appreciation of art but also the specific environmental function.

The invention discloses an amino acid functionalized metal-organic framework material. The material includes an MOF-808 matrix and an amino acid ligand introduced at a node thereof. The modified metal-organic framework composite material can be used as an adsorbent, has a high adsorption rate for palladium ions and good selectivity to ions in solutions, and can achieve substantially unchanged adsorption performance after a plurality of times of repeated use. A preparation method of the material is also disclosed. A modifying raw material adopted in the method is amino acids which are rich in source, and a preparation process is extremely simple. The modified metal-organic framework composite material has a large potential in the field of palladium ion adsorption separation, and has good application and economic value.

The invention relates to a preparation method and an application of a molybdenum and nitrogen doped lignocellulose compound adsorbing nano-material. The method includes the steps: (1) calcining lignocellulose in the ammonia atmosphere, naturally cooling the calcined lignocellulose, and grinding the cooled lignocellulose to obtain nitrogen doped lignocellulose; (2) dissolving ammonium molybdate indeionized water to prepare solution I; (3) dissolving thioacetamide in deionized water to prepare solution II; (4) sufficiently mixing the solution I and the solution II to prepare solution III; (5) adding the nitrogen doped lignocellulose into the solution III, and stirring mixture to obtain solution IV; (6) transferring the solution IV into a high-pressure reaction kettle, and performing high-temperature reaction; (7) cooling the solution IV of high-pressure reaction, and centrifugally separating a reaction product to obtain the molybdenum and nitrogen doped lignocellulose compound adsorbingnano-material. According to the method, a molybdenum and nitrogen doped lignocellulose compound has good adsorption effects on hexavalent chromium, the adsorption performance of the compound basically keeps invariable, and the compound has good stability.

The invention provides a method for preparing a magnetic micro-sphere. The method includes modifying a chloromethyl polystyrene micro-sphere by the aid of ethylenediamine and chloroacetate to obtain a modified polystyrene micro-sphere; mixing ammonium ferrie oxalate, surfactants, ion buffering agents and alcohol organic solvents with one another to obtain ammonium ferrie oxalate solution; mixing the modified polystyrene micro-sphere and the ammonium ferrie oxalate solution with each other to obtain a mixture and carrying out pre-reaction on the mixture under an oxygen isolation condition; carrying out solvothermal reaction on a pre-reaction product to obtain the magnetic micro-sphere. The method for preparing the magnetic micro-sphere has the advantages that the method is easy to implement and low in cost, antibiotic wastewater can be effectively treated by the magnetic micro-sphere prepared by the aid of the method, and the magnetic micro-sphere can be recycled; 90% of tetracycline can be adsorbed and degraded in 2 h under the condition that 2 g of magnetic micro-sphere and an appropriate quantity of hydrogen peroxide are added into each liter of to-be-treated antibiotic wastewater which is 100 mg/L tetracycline aqueous solution.

The invention discloses a regeneration method of an adsorption medium and a de-coloring treatment method of printing and dyeing wastewater. The regeneration method comprises: a regeneration solution flows through the adsorption medium; the adsorption medium is ion exchange resin or/and macro-porous adsorption resin; the regeneration solution is prepared from the following components: NaCl with the mass percent of 2 percent to 8 percent, NaOH with the mass percent of 2 percent to 8 percent and rhamnolipid with the concentration of 100ppm to 300ppm. According to the de-coloring treatment method provided by the invention, the adsorption medium is regenerated through adopting the regeneration method. According to the regeneration method of the adsorption medium, provided by the invention, the resin is rapidly regenerated in a short period through adopting the special regeneration solution and the service life of resin de-coloring is greatly prolonged; the wastewater de-coloring efficiency is improved and the operation cost is reduced; after 1500BV wastewater is treated through the resin, the adsorption performance basically has no changes and the de-coloring efficiency can reach 80 percent or above for a long period.

The invention discloses a method for preparing an adsorption material for selectively separating palladium ions and a product. The method comprises the following steps: firstly, activating silica gelby using an acid, further enabling gamma-aminopropyl triethoxy silane and phenylamine to activated silica gel so as to carry amino, that is, SiO2-NH2, on the surface of the silica gel, further supporting graphene oxide on the surface of the SiO2-NH2, introducing double bonds and sulfydryl to the surface of a composite material by using a chemical grafting method, and finally performing process steps of palladium ion adsorption, polymerization, palladium elution, and the like, so as to obtain a palladium imprinted polymer with selective adsorption upon palladium ions. Experiment verification shows that the adsorption material prepared by using the method has a remarkable recognition property and affinity upon palladium ions.

The invention discloses a preparation method of a thiourea-modified SiO2 composite material, a product thereof, and an application of the product. Activated silica gel is aminated to obtain an amino group-containing silica gel composite material, and the amino group-containing silica gel composite material is further modified with allyl thiourea to obtain the thiourea-modified SiO2 composite material. The thiourea-modified silica gel composite material prepared in the invention has a high adsorption rate to palladium ions, has a good selectivity to ions in a solution, can be reused multiple times, and keeps the adsorption performance substantially unchanged when reused.

The invention discloses a preparation method and application of a nylon 65 material with a porous structure. The method comprises the following steps: after nylon 65 salt is synthesized by the patent CN108285532B, preparing a nylon 65 raw material through melt polymerization by the patent CN112920401A, mixing and dissolving anhydrous formic acid and the nylon 65 material, placing the fully dissolved nylon 65 formic acid solution in a container with a proper size, adding a sodium carbonate solution, and performing liquid foaming to obtain the nylon 65 material with the porous structure and excellent adsorption performance. The nylon 65 material with the porous structure prepared by the process has relatively strong adsorption performance by virtue of the special structure, and also has the characteristics of high temperature resistance, strong acid resistance, high efficiency in wastewater dye removal, reusability and the like. The nylon 65 adsorbing material can be used for adsorbing dye wastewater, and has the advantages of environmental protection, economy and high efficiency.

The invention relates to a renewable adsorbent for hydrogen sulfide removal and a preparation method thereof, the adsorbent is composed of an active component and a carrier, the active component is an alkaline metal salt, and the carrier is a composite carrier having a plurality of mesoporous channel structures and composed of activated alumina and a molecular sieve. Compared with the prior art, by adjusting the pore channel structure of the composite carrier in the adsorbent, the composite carrier has mesoporous structures with pore size distribution of 2-20 nm and 20-50 nm respectively, and the utilization effect of the active component is improved, so that the single-time use time of the adsorbent is prolonged, the regeneration frequency is reduced, and the purpose of reducing the operation energy consumption during industrial application is achieved.