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Preparation and application of trimethylsilyl imidazole adsorbentfor antibiotics

A trimethylsilyl imidazole and adsorbent technology, which is applied in the direction of adsorption of water/sewage treatment, water/sludge/sewage treatment, water pollutants, etc., to achieve good adsorption effect, fast reaction kinetics, and simple preparation method Effect

Pending Publication Date: 2021-11-05
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention provides the preparation and application of an antibiotic-oriented trimethylsilyl imidazole adsorbent and its preparation method, which realizes the problem of quickly adsorbing and removing sulfonamide antibiotics and quinolone antibiotics from wastewater , to achieve a higher adsorption capacity

Method used

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  • Preparation and application of trimethylsilyl imidazole adsorbentfor antibiotics
  • Preparation and application of trimethylsilyl imidazole adsorbentfor antibiotics
  • Preparation and application of trimethylsilyl imidazole adsorbentfor antibiotics

Examples

Experimental program
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Effect test

Embodiment 1

[0026] (1) 1.00g of chloromethyl polystyrene resin particles PS-CH 2 Cl was sieved with a standard sieve, and the obtained resin particles with a particle size of about 30 μm were placed into a 50 mL round-bottomed three-neck flask, and the round-bottomed flask was fixed on an iron stand equipped with a motor, and 30 mL of 1-methyl-2 -Pyrrolidone is used as a swelling agent to make the volume of the polyethylene resin expand in the solvent to facilitate chloride ion exchange with the ionic liquid, and the opening of the flask is blocked with a frosted glass stopper;

[0027] (2) Add 2.05mL of 1-(trimethylsilyl)imidazole into the three-necked flask and fully react the mixture under magnetic stirring (the rotation speed of the magnet is 200r / min);

[0028] (3) After the reaction is completed, pour the yellow mixture into a 20mL centrifuge tube and wash the residual resin particles on the wall of the flask with ethanol and water, put the centrifuge tube containing about 15mL of t...

Embodiment 2

[0030]In the adsorbent dosage experiment, weigh 0.1g of sulfamethoxazole with Tianzi balance and dissolve it in 1L of 400mg / L NaOH solution to prepare a sulfamethoxazole stock solution with an initial concentration of 1000mg / L, and take 5mL of it and dissolve it in Dilute 495mL of deionized water 100 times to prepare 500mL of stock solution with C0=10mg / L, use 1M sodium hydroxide or HCl to adjust the pH of the solution to 7±0.1, and take 50mL into a 250mL conical flask for later use. The trimethylsilimidazole ionic liquid adsorbent that takes 0.05g chloromethyl polystyrene resin solid-phase load is added in the sulfamethoxazole solution, simultaneously in order to prevent the adsorbent from agglomerating the Erlenmeyer flask is ultrasonically treated for 30s, and then all Put the Erlenmeyer flask into a constant temperature shaker with the temperature set at 303.15K, shake it at a speed of 200r / min, use a rubber dropper to draw 4mL of the supernatant, put it in a 20mL centrifug...

Embodiment 3

[0035] Dissolve 0.01g of ciprofloxacin in 1L of 400mg / L NaOH solution to prepare an initial concentration of ciprofloxacin stock solution of 10mg / L, use 1M sodium hydroxide or HCl to adjust the pH of the solution to 7 ± 0.1, and Take 50mL and put it in a 250mL conical flask for use, add 0.05g trimethylsilimidazolium ionic liquid adsorbent loaded on the solid phase of chloromethyl polystyrene resin, and ultrasonicate the conical flask to prevent the agglomeration of the adsorbent After processing for 30s, put all the Erlenmeyer flasks into a constant temperature shaker with the temperature set at 303.15K, statically adsorb at a speed of 200r / min, draw 4mL of the supernatant into a 20mL centrifuge tube and use a centrifuge at 8000r / min. Centrifuge for 10 min at 10 min, draw the supernatant with a 1 mL syringe, filter it with a 0.45 μm cellulose filter, and measure the concentration of ciprofloxacin at different time points with a UV-visible spectrophotometer at 276 nm.

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Abstract

The invention discloses a preparation method of a 1-(trimethylsilyl) imidazole ionic liquid adsorbent for antibiotics in a water body and an applied synthesis method and application thereoft, and belongs to the technical field of water body organic micropollutant treatment. According to the invention, the 1-(trimethylsilyl) imidazole ionic liquid is grafted on the surface of the chloromethyl polystyrene resin through chemical bonding so that the product is prepared. The specific application effect of the synthesized 1-(trimethylsilyl) imidazole ionic liquid adsorbent in adsorption of four typical antibiotics including beta-lactam antibiotics (ceftiofur), sulfonamide antibiotics (sulfamethoxazole), fluoroquinolone antibiotics (ciprofloxacin) and tetracycline antibiotics (aureomycin) is released for the first time; the synthesis method is simple and convenient to operate and mild in reaction condition, and the product has the advantages of large adsorption quantity, fast reaction kinetics, high adsorption efficiency and the like on various antibiotics.

Description

technical field [0001] The invention relates to the field of adsorption and removal of antibiotic pollutants, in particular to a preparation method and application of an antibiotic-oriented trimethylsilyl imidazole adsorbent. Background technique [0002] Antibiotics are an important part of PPCPs, which are a class of secondary metabolites produced by microorganisms, as well as chemically synthesized or semi-synthesized compounds that can inhibit the growth and survival of other microorganisms. Generally can be divided into quinolone antibiotics, sulfonamide antibiotics, β-lactam antibiotics, macrolides, aminoglycoside antibiotics and so on. In recent years, due to the widespread use of antibiotics worldwide, antibiotic pollution in natural water environments has become increasingly serious, posing a huge threat to human and natural microbial systems. In order to enhance the batch treatment effect of antibiotic-contaminated wastewater, environmental science and engineering...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F101/34C02F101/36C02F101/38
CPCB01J20/265C02F1/285C02F2101/40C02F2101/38C02F2101/34C02F2101/36
Inventor 郝晨捷赵鹏赵伟高关春峰
Owner TIANJIN UNIV
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