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Catalytic oxidation method for efficiently degrading ciprofloxacin and evaluation method of toxicity of product of ciprofloxacin

A ciprofloxacin and catalytic oxidation technology, which is applied in chemical instruments and methods, oxidized water/sewage treatment, water pollutants, etc., can solve problems such as low efficiency, secondary pollution, and high energy consumption, and achieve high efficiency and environmental protection. Friendly, easy-to-operate effects

Active Publication Date: 2019-04-26
南京卡佛科学仪器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a catalytic oxidation method for efficiently degrading ciprofloxacin and a product toxicity assessment method thereof, to solve the problem of low efficiency and high energy consumption in the existing method for degrading ciprofloxacin proposed in the above-mentioned background technology. Produce chlorinated by-products and iron oxide mud, which is easy to cause secondary pollution

Method used

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  • Catalytic oxidation method for efficiently degrading ciprofloxacin and evaluation method of toxicity of product of ciprofloxacin
  • Catalytic oxidation method for efficiently degrading ciprofloxacin and evaluation method of toxicity of product of ciprofloxacin
  • Catalytic oxidation method for efficiently degrading ciprofloxacin and evaluation method of toxicity of product of ciprofloxacin

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Embodiment 1

[0040] Use 0.5M sodium carbonate and sodium bicarbonate solution, perchloric acid and sodium hydroxide solution to adjust the pH of the reaction solution containing 10 µM ciprofloxacin to 8 and 10, respectively, and then add Fe(III)-TAML solution, in which Fe The dosage of (III)-TAML was 1 μM. The kinetics of ciprofloxacin degradation were initiated by the addition of 1 mM H2O2. After reacting for 5 minutes, add 1mM concentrated HClO4 and 2mM methanol to terminate the reaction, then use high performance liquid chromatography (HPLC) to analyze the reactants and products, use the external standard curve method for analysis, and collect the chromatograms of standard samples with different concentrations Figure integration, quantitative calculation by external standard method, to establish a standard curve. Among them, the purpose of adding concentrated HClO4 is to adjust the pH to below 3, so that Fe(III)-TAML loses its activity; the purpose of adding methanol includes extractin...

Embodiment 2

[0044] A method for improving tetraamidohexamethylphenyl ring iron degradation tetrabromobisphenol A efficiency and reutilization rate, the steps are:

[0045] (1) Use 0.5M sodium carbonate and sodium bicarbonate solution, perchloric acid and sodium hydroxide solution to adjust the pH of the reaction solution containing 10 µM ciprofloxacin to 8 and 10, respectively, and then add Fe(III)-TAML solution , where the amount of Fe(III)-TAML was 1 μM. The kinetics of ciprofloxacin degradation were initiated by the addition of 1 mM H2O2. After reacting for 5 minutes, add 1mM concentrated HClO4 and 2mM methanol to terminate the reaction, then use high performance liquid chromatography (HPLC) to analyze the reactants and products, use the external standard curve method for analysis, and collect the chromatograms of standard samples with different concentrations Figure integration, quantitative calculation by external standard method, to establish a standard curve. Among them, the purp...

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Abstract

The invention discloses a catalytic oxidation method for efficiently degrading ciprofloxacin and an evaluation method of the toxicity of a product of ciprofloxacin, and belongs to the field of organicpollutant degradation. The catalytic oxidation method for efficiently degrading ciprofloxacin and the evaluation method of the toxicity of the product of ciprofloxacin solve the problem that an existing degradation method has high energy consumption, complicated operation, easy formation of secondary pollution and the like. According to the catalytic oxidation method for efficiently degrading ciprofloxacin and the evaluation method of the toxicity of the product of ciprofloxacin, tetraamido hexamethyl phenyl ring iron (Fe(III)-TAML) is used as a catalyst and then is oxidized by hydrogen peroxide to form oxidized TAML (Fe(IV)-TAML or Fe(V)-TAML), and the oxidized TAML can rapidly oxidize ciprofloxacin. The toxicity of the degradation product of ciprofloxacin is evaluated by the luminescence inhibition rate of Vibrio Fischeri. Toxicity evaluation results show that Fe(III)-TAML can effectively reduce the toxicity of ciprofloxacin and can be used as an alternative method for existing treatment of ciprofloxacin.

Description

technical field [0001] The invention belongs to the field of organic pollutant degradation, and more specifically relates to a catalytic oxidation method for efficiently degrading ciprofloxacin and a product toxicity evaluation method thereof. Background technique [0002]Over the past few decades, antibiotics have been widely used in animal husbandry to treat infectious diseases and increase the rate of occurrence (Chee-Sanford, J. C.; Aminov, R. I.; Krapac, I. J.; Garrigues-Jeanjean, N.; Mackie, R. I., Occurrence and Diversity of Tetracycline Resistance Genes in Lagoons and Groundwater Underlying Two Swine Production Facilities. Applied and Environmental Microbiology 2001, 67, (4), 1494-1502; Akyol, Ç.; Aydin, S.;Ince, O.; Ince, B., A comprehensive Microbial insight into single-stage and two-stage anaerobic digestion of oxytetracycline-medicated cattle manure. Chemical Engineering Journal 2016, 303, 675-684; Akyol, Ç.; Ince, O.;Cetecioglu, Z.; Alkan, F. U.; Ince, B., The ...

Claims

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Application Information

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IPC IPC(8): C02F1/72G01N30/02C02F101/38C02F101/36
CPCG01N30/02C02F1/722C02F1/725C02F2101/38C02F2101/36G01N2030/047
Inventor 过伟王超倪刘健金鑫周绍达
Owner 南京卡佛科学仪器有限公司
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