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Method for rapidly degrading antibiotics

A rapid degradation, antibiotic technology, applied in chemical instruments and methods, water/sludge/sewage treatment, organic compound/hydride/coordination complex catalysts, etc., can solve slow degradation rate, reduced efficiency, insufficient light, etc. problem, to achieve the effect of simple operation, lower cost and broad application prospects

Active Publication Date: 2017-10-24
KUNMING UNIV OF SCI & TECH
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Problems solved by technology

[0005] Photocatalysts have a great dependence on the intensity of the light source. Weak light will reduce its efficiency for degradation. For some areas seriously polluted by antibiotics, there are often severe smog and insufficient light for a long time, and the degradation rate is slower. If the degradation rate is increased It is also necessary to apply a light source to generate energy consumption; although the advanced oxidation method does not depend on the intensity of light, according to the degradation rate reported in the current literature, the degradation rate is less than 90% in half an hour. still not ideal

Method used

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  • Method for rapidly degrading antibiotics

Examples

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Embodiment 1

[0027] Embodiment 1: The specific content of the method of this rapid degradation antibiotic is as follows:

[0028] In this example, MIL-101(Fe) / TiO was prepared under the conditions of 12h / 120°C 2 Catalyst, Research MIL-101(Fe) / TiO 2 For the degradation effect of tetracycline;

[0029] (1) Metal-organic framework composite MIL-101(Fe) / TiO 2 Preparation: Dissolve ferric chloride hexahydrate, terephthalic acid, and titanium dioxide in a molar ratio of 1:1:1 in 40 mL of DMF, and after stirring for 1 hour, transfer the solution to a 100 mL Teflon-lined In the reaction kettle, the reaction kettle was placed in a forced air drying oven, and after reacting at 120° C. for 12 hours, the reaction kettle was taken out, and the reaction kettle was naturally cooled to room temperature. After the reaction kettle was cooled, the product was taken out with a sand core funnel for suction filtration, washed with DMF and ethanol three times, and then vacuum-dried at 60°C for 12 hours; the m...

Embodiment 2

[0038] Example 2: This example is MIL-101(Fe) / TiO prepared under the preparation conditions of 12h / 120°C 2 As a catalyst, the effect of different molar ratios of potassium persulfate and tetracycline (n potassium persulfate / n tetracycline = 10, 20, 30, 40) on the catalytic activation reaction was studied;

[0039] (1) The preparation method of the metal-organic framework composite material is the same as step (1) in Example 1;

[0040](2) Use a photochemical reaction instrument as a simulated visible light source, the light source is 300W natural visible light, add potassium persulfate and tetracycline solution with a molar ratio of 10:1 into the reactor, and keep the solution volume in the reactor at 50mL of 80mg / L tetracycline solution, while adding 50mg MIL-101(Fe) / TiO to the reactor 2 Magnetic stirring is carried out in the optical reaction instrument, the reaction is carried out at room temperature, and sampling and analysis are carried out at fixed points;

[0041] (3)...

Embodiment 3

[0048] Example 3: This example is MIL-101(Fe) / TiO prepared under the conditions of 12h / 120°C 2 As a catalyst, study MIL-101(Fe) / TiO 2 The effect of the dosage (5mg, 25mg, 50mg, 75mg, 100mg) on ​​the catalytic activation reaction

[0049] (1) Metal-organic framework composite MIL-101(Fe) / TiO 2 The preparation method is the same as the step (1) in the implementation case 1;

[0050] (2) Use a photochemical reaction instrument as a simulated visible light source, the light source is 300W natural visible light, add potassium persulfate and tetracycline solution with a molar ratio of 20:1 into the reactor, and keep the solution volume in the reactor at 50mL of 80mg / L tetracycline Solution, add 5mg MIL-101(Fe) / TiO in the reactor at the same time Carry out magnetic stirring in the optical reactor, react under normal temperature conditions, fixed-point sampling analysis;

[0051] (3) Add 25mg MIL-101(Fe) / TiO to the reactor 2 , other conditions are the same as step (2);

[0052] (...

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Abstract

The invention discloses a method for rapidly degrading antibiotics. According to the method, by utilizing an MIL-101(Fe) / TiO2 composite material as a catalyst, persulfate can be greatly catalyzed and activated under a normal temperature and weak light source to rapidly generate a large quantity of sulfate radical free radicals so as to degrade the antibiotics; a composite material is easy to recycle, can remain a relatively good activating effect after being repeated used and is a green environment-friendly material; according to the method, equipment is simple and convenient to operate, the energy consumption is saved, the catalysis time is short, and extremely high degradation effect on the antibiotics can be achieved under relatively weak natural light in severe-haze and light-deficient areas; and the method has great application prospects in the degradation of the antibiotics.

Description

technical field [0001] The invention belongs to the technical field of pharmaceutical wastewater treatment, in particular to a MIL-101(Fe) / TiO-based 2 Composite material activates persulfate to rapidly degrade antibiotics under weak light source. Background technique [0002] my country is a big country that uses antibiotics. It also causes water pollution while treating diseases. Antibiotics in rivers mainly come from pharmaceutical wastewater, aquaculture wastewater, and animal manure. Antibiotics are difficult to degrade under natural light, resulting in the accumulation of antibiotic concentrations. The intake of antibiotics will make people and animals develop drug resistance, produce superbugs, and affect the health of humans and animals. [0003] At present, the methods for treating antibiotics in water mainly include: adsorption, catalytic degradation, membrane separation and biological treatment. Based on sulfate free radicals (SO 4 - The advanced oxidation techn...

Claims

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Application Information

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IPC IPC(8): C02F1/72B01J31/38C02F101/30C02F103/34
CPCC02F1/725B01J31/1691B01J31/38C02F2103/343C02F2101/30B01J35/39
Inventor 陕绍云何磊贾庆明蒋丽红王亚明
Owner KUNMING UNIV OF SCI & TECH
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