37results about How to "Simple adsorption operation" patented technology

The invention provides a nitrogenous NaY type molecular sieve composite adsorption material, a preparation method and application. The preparation method of the material comprises the steps of carrying out a polymerization reaction on aniline on a NaY type molecular sieve under the action of a crosslinking agent to obtain solid granules, and washing and drying the solid granules to obtain the nitrogenous NaY type molecular sieve composite adsorption material. The invention further provides the nitrogenous NaY type molecular sieve composite adsorption material prepared by the method and an application thereof. The preparation method of the nitrogenous NaY type molecular sieve composite adsorption material is free of high temperature calcination, low in energy consumption and simple in steps, and the aniline is polymerized on the NaY type molecular sieve, so that the amino density is high. The CO2 adsorption ability of the nitrogenous NaY type molecular sieve composite adsorption material provided by the invention is strong, when a gas contains low-concentration CO2 under normal temperature and normal pressure, the CO2 adsorption rate of the nitrogenous NaY type molecular sieve composite adsorption material provided by the invention is quite high, the adsorption operation is simple and easy, and the treatment cost is low.

The present invention discloses a preparation method of a porous ceramic surface perfluorooctane sulfonic acid molecularly imprinted adsorbent. According to the preparation method, waste ceramic is used as the supporting body of an adsorbent, and perfluorooctane sulfonic acid is used as a template molecule; 58-65% by mass of N,N-dimethylformamide, 15-20% by mass of succinimide, 1.0-3.0% by mass of perfluorooctane sulfonic acid, 12-18% by mass of aminated porous ceramic powder, and 1.0-4.0% by mass of ammonium persulfate are added to a reactor, a stirring reaction is performed for 6 h at a temperature of 75+ / -2 DEG C in the absence of oxygen, the obtained product is subjected to stirring washing for 12 h with the mixed solution of ethanol and sodium hydroxide, the template molecule is removed, and drying is performed to obtain the porous ceramic surface perfluorooctane sulfonic acid molecularly imprinted adsorbent. According to the present invention, the porous ceramic surface perfluorooctane sulfonic acid molecularly imprinted adsorbent can specifically recognize perfluorooctane sulfonic acid, and has advantages of high selectivity, good mechanical property, good chemical stability, fast adsorption, easy elution, and regenerative capacity.

The invention discloses a double metal loaded sodium alginate / carboxymethylcellulose double-functional microballoon adsorbing material and a preparation method thereof. The method comprises the following steps: dissolving sodium alginate and carboxymethylcellulose at a mass ratio of (5-20) to 1 in deionized water, and stirring so as to obtain 1-3wt% compound colloidal sol; electronically spraying the compound colloidal sol into a receiving device containing a 1-20wt% metal ion solution by using an electronic spraying device, stirring, and filtering to obtain metal ion doped gel microballoons; and leaching the gel microballoons, then soaking the leached gel microballoons in a 5-25wt% aluminium chloride solution, stirring to obtain a mixture, adding 0.1-3 parts by volume of a cross-linking agent into the mixture, stirring, filtering, leaching and stoving so as to obtain the double metal loaded sodium alginate / carboxymethylcellulose double-functional microballoon adsorbing material. The preparation method has the characteristics of being simple, low in cost, environmentally friendly, and the like; the material prepared by adopting the method disclosed by the invention has the good application prospect in the aspects of water treatment and the like in fields of chemical engineering, agriculture, environment protection and the like.

The invention discloses a 'mercapto-gold' modified silica-gel surface sudan molecularly imprinted material as well as a preparation method and application thereof. The preparation method comprises the following steps: performing surface modification on silica gel, so that the silica-gel surface contains mercapto groups; performing coordination bonding on gold nanoparticles and the mercapto groups so as to connect the gold nanoparticles and silica gel through the mercapto groups, consequently, forming 'mercapto-gold' @silica gel; taking sudan as a template molecule, adding the 'mercapto-gold' @silica gel, a cross-linking agent, an initiator and a pore-foaming agent for carrying out a polymerization reaction, and removing the template molecule, so as to obtain the 'mercapto-gold' modified silica-gel surface sudan molecularly imprinted material. The material prepared by the method has adsorptivity on the sudan molecule, and also has the advantages of high selectivity, specific recognition ability and the like.

The invention discloses a heavy metal biological adsorbent using an eggshell membrane as a matrix and a preparation method thereof. The heavy metal biological adsorbent adopts chitosan as an immobilized carrier and eggshell membrane powder as a basis material, and comprises the following components in part by weight: 10 to 13 parts of the eggshell membrane powder, 20 to 30 parts of the chitosan of which the deacetylation degree is 86.9 percent, and a minute amount of gelatinous substance of a complex which contains sodium and potassium and is formed in the preparation process. The particle size of the biological adsorbent is 2 to 3 millimeters. The method comprises the steps of performing vacuum freeze drying and mechanical disintegration on a fresh eggshell membrane (a fibrous membrane between an eggshell and egg white), and then embedding the eggshell membrane with chitosan glue solution to obtain the biological adsorbent for adsorbing heavy metals. The biological adsorbent can be used for treating waste water containing the heavy metals of nickel, cobalt, cadmium, copper, lead and the like of which the concentration is lower than 100 mg / L, and the adsorption rate achieves 42 to98 percent.