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Method for removing tetracycline antibiotics in water

A technology of tetracyclines and antibiotics, applied in chemical instruments and methods, water pollutants, adsorbed water/sewage treatment, etc., can solve problems such as high iron consumption, iron sludge, low pH, etc., achieve good activity and strong reusability , the effect of good application prospects

Pending Publication Date: 2019-06-18
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the hydroxyl radical produced by the Fenton reaction can effectively remove tetracycline, but the Fenton reaction has some fatal shortcomings, such as: iron sludge, high iron consumption, low pH, etc.

Method used

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  • Method for removing tetracycline antibiotics in water
  • Method for removing tetracycline antibiotics in water
  • Method for removing tetracycline antibiotics in water

Examples

Experimental program
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Embodiment 1

[0030] The method for removing tetracycline antibiotics in the water body is as follows in the present embodiment:

[0031] 1. Preparation of porous magnetic chitosan microspheres by in situ precipitation method

[0032] Weigh 1.00g chitosan and 5ml Fe 3+ / Fe 2+ A mixed solution with a molar ratio of 2:1 (Fe 3+ =0.2~1.4mol / L, Fe 2+ =0.1~0.7mol / L) into 40mL of 2% acetic acid solution, mechanically stirred for 30min to fully dissolve the chitosan. The mixed solution was dripped into the NaOH / sodium citrate mixed soaking solution (NaOH 1.25mol / L, sodium citrate 0.1mol / L) with a peristaltic pump, left to age for 10h, and washed with ultrapure water several times after magnetic separation. Residual NaOH and sodium citrate were removed, and dried in a freeze-drying oven for 6 hours to prepare porous magnetic chitosan gel microspheres, which were stored at 4°C for future use.

[0033] 2. Add magnetic chitosan microspheres to the tetracycline antibiotic solution, adjust the pH of...

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Abstract

The invention discloses a method for removing tetracycline antibiotics in water. The method includes steps: firstly, synthesizing nano ferroferric oxide supported porous magnetic chitosan microspheresaccording to an in-situ co-precipitation method; then, in existence of hydrogen peroxide, adding the nano ferroferric oxide supported porous magnetic chitosan microspheres into acidic tetracycline antibiotic solution to generate hydroxyl radical active groups through catalysis of hydrogen peroxide to continuously attack tetracycline molecules, so that treatment of water containing the tetracycline antibiotics is completed. The method has advantages of simplicity in operation, simplicity and easiness in acquisition of reagents, wide application, high practicality, excellent removal effects andthe like.

Description

technical field [0001] The invention relates to a method for removing tetracycline antibiotics in water, which is to remove tetracycline antibiotics in water by generating hydroxyl free radicals through the Fenton reaction of porous magnetic chitosan microspheres. Background technique [0002] Antibiotics are the most widely used pharmaceutical compounds in human and veterinary medicine, among which tetracycline antibiotics are the second most commonly used antibiotics due to their huge production and usage worldwide. In the actual process of treating tetracycline, due to the complicated post-treatment and the antibacterial properties of tetracycline itself, it is difficult to completely remove it by traditional techniques such as physical adsorption and biodegradation. A large amount of tetracycline antibiotics are deposited in water bodies, seriously threatening the health of nature and human beings. [0003] Among the existing water treatment technologies, advanced oxida...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F101/34C02F101/38
Inventor 崔康平李晓洋郭志杨婷婷曹勇
Owner HEFEI UNIV OF TECH
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