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Method for carrying out photocatalytic degradation on sulfamethoxazole

A sulfamethoxazole, catalytic degradation technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve problems such as difficult to achieve, and achieve economic and social benefits huge effect

Inactive Publication Date: 2015-06-17
ZHENGZHOU UNIVERSITY OF AERONAUTICS
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  • Description
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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

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Embodiment 1

[0014] The present invention is realized by the following methods in concrete implementation:

[0015] First prepare Fe / Bi / Mo-expanded graphite composite nanomaterials, the method is, adopt electro-optical balance to accurately weigh 10g natural graphite, put the concentrated sulfuric acid 60mL that the volume concentration is 98% in the 500mL beaker, under 4 ℃ ice bath , Slowly add natural graphite into the beaker, stir vigorously for 30min, slowly add 20g of potassium permanganate and stir for 10min, place the beaker in a constant temperature 30°C shaker for 1h, add 100mL of warm water to dilute. Thereafter, 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, filter out the graphite oxide, wash the graphite oxide with 5% volume concentration of dilute hydrochloric acid and volume concentration of 5% dilute potassium bicarbonate 3- 5 times, fully dry in a constant temp...

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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 photocatalytically degrading sulfamethoxazole. Background technique [0002] Since the discovery of antibiotics, significant contributions have been made in disease prevention and treatment. At present, antibiotics are mainly used in agricultural production and medical treatment. The currently used antibiotics are mainly tetracyclines, amides, macrolides and sulfonamides. According to statistics, at least 50% of the world's antibiotics are used in animal husbandry and aquaculture every year. According to the survey, at present, antibiotic drug pollution has been detected in soil and water bodies in many regions of the world, with many types and increasing concentrations. 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 con...

Claims

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Application Information

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Patent Type & Authority Patents(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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