Tetracycline degradation method

A tetracycline, nitrogen-doped technology, applied in chemical instruments and methods, physical/chemical process catalysts, oxidized water/sewage treatment, etc., to achieve high feasibility, wide pH range, and good water solubility.

Active Publication Date: 2020-05-29
HUNAN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present invention aims at the existing deficiencies in the degradation of tetracycline pollutants in the prior art, and provides a method for catalyzing persulfate to produce sulfate radicals to degrade tetracyclines

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Embodiment 1

[0059] A method for catalyzing persulfate under visible light to generate sulfate radicals to degrade organic matter, comprising the following steps:

[0060] 1. Preparation of N-CQDs / g-C 3 N 4 catalyst

[0061] (1) Accurately weigh 0.25g g-C 3 N 4 In a 100mL beaker, 40mL of absolute ethanol was used to ultrasonically mix evenly, and then 3mL of N-CQDs aqueous solution was added thereto, and ultrasonically mixed for 30min to obtain a uniformly mixed solution.

[0062] (2) Transfer the mixed solution prepared in step (1) to a polytetrafluoroethylene-lined reactor, seal it, perform a hydrothermal reaction at 200° C. for 2 hours, and naturally cool to room temperature to obtain a light brown precipitate.

[0063] (3) Centrifuge, wash and dry the light brown precipitate obtained in step (2) to obtain a nitrogen-doped carbon quantum dot modified carbon nitride photocatalyst, named N-CQDs / g-C 3 N 4 -3.

[0064] 2. Using the catalyst prepared in step 1 to catalyze persulfate u...

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Abstract

The invention discloses a method for degrading tetracycline, and belongs to the technical field of organic wastewater treatment. According to the method, a nitrogen-doped carbon quantum dot-carbon nitride metal-free catalyst is adopted to activate persulfate under visible light to degrade tetracycline. According to the nitrogen-doped carbon quantum dot-carbon nitride metal-free catalyst, carbon nitride is taken as a carrier, and the carbon nitride is modified with nitrogen-doped carbon quantum dots. The metal-free catalyst disclosed by the invention has the advantages of strong light absorption capability, high photo-induced electron-hole separation efficiency, high catalytic activity, strong oxidation-reduction capability and the like. The catalyst is used for activating persulfate to degrade antibiotic wastewater under visible light, can catalyze persulfate to efficiently generate strong oxidizing free radicals, has the advantages of high degradation efficiency, good reusability, nosecondary pollution and wide application range, and has a very good practical application prospect.

Description

technical field [0001] The invention belongs to the technical field of organic wastewater treatment and relates to a tetracycline degradation method. Background technique [0002] Antibiotics are widely used all over the world as an important drug for the treatment of pathogenic bacterial infections. Today, the continuous accumulation of antibiotics in ecosystems has become a persistent pollutant that seriously threatens human health. The application of advanced oxidation technology to degrade toxic and harmful persistent pollutants such as antibiotics in water is of great significance to solve the problem of water pollution. [0003] Advanced oxidation technology refers to the method of using strong oxidizing free radicals generated in the reaction as the main oxidant to oxidize and decompose organic pollutants in water. At present, the most commonly used advanced oxidation technology is mainly the Fenton method, and based on the sulfate radical (chemical formula: SO 4 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/30C02F1/72B01J27/24C02F101/30
CPCC02F1/30C02F1/725B01J27/24C02F2101/30Y02W10/37
Inventor 袁兴中张信蒋龙波张进
Owner HUNAN UNIV
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