Method for carrying out photocatalytic degradation on sulfamethoxazole

A sulfamethoxazole, catalytic degradation technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as difficult to achieve, and achieve economical and huge social benefits

Inactive Publication Date: 2014-08-27
ZHENGZHOU UNIVERSITY OF AERONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the long run, reducing the use of antibiotics or controlling production at the source is the most effective way to prevent antibiotic contamination, but it is difficult to achieve in the short term, especially in China

Method used

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  • Method for carrying out photocatalytic degradation on sulfamethoxazole
  • Method for carrying out photocatalytic degradation on sulfamethoxazole
  • Method for carrying out photocatalytic degradation on sulfamethoxazole

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Embodiment 1

[0014] In the specific implementation, the present invention is realized by the following methods:

[0015] First, prepare Fe / Bi / Mo-expanded graphite composite nanomaterials. The method is to accurately weigh 10g of natural graphite with an electro-optical balance, and put 60mL of concentrated sulfuric acid with a volume concentration of 98% in a 500mL beaker, and place it under ice at less than 4℃. , Slowly add natural graphite to the beaker, stir vigorously for 30 minutes, slowly add 20 g of potassium permanganate and stir for 10 minutes, place the beaker in a constant temperature 30 ℃ shaker for 1 hour, add 100 mL of warm water for dilution. After that, add 30 mL of hydrogen peroxide with a volume concentration of 30% to the above suspension to further oxidize the natural graphite. After reacting for 5 minutes, the graphite oxide is filtered out, and the graphite oxide is washed with 5% dilute hydrochloric acid and 5% dilute potassium bicarbonate by volume. 5 times, fully dry ...

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Abstract

The invention relates to a method for carrying out photocatalytic degradation on sulfamethoxazole. The problem of waste water treatment of the sulfamethoxazole hard to biodegraded can be effectively solved. The method comprises the steps that elements of iron, molybdenum and bismuth are adopted to be doped with expanded graphite to prepare a Fe/Bi/Mo-expanded graphite composite nano material, the Fe/Bi/Mo-expanded graphite composite nano material is added to waste water with the sulfamethoxazole, the pH value is adjusted to be 5.5-8.5 through alkaline matter, irradiation is carried out under visible light for 170 minutes to 190 minutes, the Fe/Bi/Mo-expanded graphite composite nano material is utilized, the waste water with the sulfamethoxazole with the concentration of 5 mg/L to 10 mg/L is directly oxidized through the single Fe/Bi/Mo-expanded graphite composite nano material without adding other promoters, and the adding amount of the Fe/Bi/Mo-expanded graphite composite nano material is 1 g/L to 2 g/L; finally, the degradation rate of the sulfamethoxazole is measured. Acidic materials do not need to be added manually, the solution of the sulfamethoxazole is acidic, a photocatalytic reaction can be carried out conveniently, after the photocatalytic reaction, the sulfamethoxazole is degraded, even part of the sulfamethoxazole is mineralized, the removal rate of the sulfamethoxazole is more than 90 percent, energy conservation and environmental protection are achieved, and great economic and social benefits are achieved.

Description

Technical field [0001] The invention relates to the field of chemical environmental protection, in particular to a method for photocatalytic degradation of sulfamethoxazole. Background technique [0002] Since the discovery of antibiotics, they have made significant contributions to disease prevention and treatment. Current antibiotics are mainly used in agricultural production and medical treatment. The antibiotics currently used are mainly tetracyclines, amides, macrolides and sulfonamides. According to statistics, at least 50% of antibiotics in the world are used in animal husbandry and aquaculture every year. The survey shows that, at present, the contamination of antibiotic drugs has been detected in soil and water bodies in many parts of the world, with many types and an increasing concentration. For example, 4 types of antibiotics were detected in the effluent of 5 sewage plants in Sweden, including 3 quinolone antibiotics and 1 tetracycline antibiotic, with the highest ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04B01J23/887
Inventor 郑宾国李春光姜灵彦彭伟功陶贺牛俊玲崔节虎梁丽珍刘蕾
Owner ZHENGZHOU UNIVERSITY OF AERONAUTICS
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