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Method for targeted degradation of quinolone antibiotics in water and multiband ultraviolet (UV) radiation device used for method

An irradiation device and quinolone technology, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve the problems of no involvement, few toxic by-products, etc., achieve good effect, low product toxicity, and accelerate mineralization The effect of degradation properties

Inactive Publication Date: 2017-04-05
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, there are many studies on the degradation of QNs by using conventional UV mercury lamps, but there are no experiments on the screening and optimization of degradation wavelengths for the molecular spectral characteristics of QNs antibiotics.
In addition, compared to hydroxyl radicals (·OH), sulfate radicals (·SO 4- ) has a higher degradation efficiency for organic matter, is more targeted, and generates less toxic by-products, but there is no research on the degradation of QNs

Method used

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  • Method for targeted degradation of quinolone antibiotics in water and multiband ultraviolet (UV) radiation device used for method
  • Method for targeted degradation of quinolone antibiotics in water and multiband ultraviolet (UV) radiation device used for method
  • Method for targeted degradation of quinolone antibiotics in water and multiband ultraviolet (UV) radiation device used for method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1: Design and manufacture of multi-band ultraviolet irradiation device

[0037] 1. Materials

[0038] Multi-band UV irradiation light source 1: UV-LEDs capable of emitting 255nm, 265nm, 280nm, 310nm and 365nm, and the irradiation power of a single module is 5-15mW.

[0039] Heat dissipation device 2: Contains heat dissipation fan and copper sheet. According to the size of the light source, select the appropriate size of heat dissipation fan and copper sheet for assembly.

[0040] Stirring device 4: a horizontal rotary oscillator is used.

[0041] Reaction Vessel 5: A custom-made fixed-volume circular glass vessel.

[0042] Module frame 3: PLA engineering plastics and ABS engineering plastics are used.

[0043] Power supply 6: Select an appropriate AC-DC conversion power supply according to the rated power and rated current of the light source.

[0044] 2. Method

[0045] Design of the device: AutoCAD is used to design the shell and support of the UV irra...

Embodiment 2

[0048] Example 2: Screening for the dominant wavelength of degradation of ciprofloxacin

[0049] 1. Materials

[0050] Multi-band ultraviolet irradiation device: the multi-band ultraviolet irradiation device manufactured in Example 1 is adopted, and the emission wavelength of the device includes five bands of 255nm, 265nm, 280nm, 310nm and 365nm.

[0051] Agents and solutions: ultrapure water (resistivity 18.2MΩ, dissolved organic carbon DOC2 HPO 4 12H 2 O 0~200mg / L, KH 2 PO 4 0~100mg / L).

[0052] 2. Method

[0053] Weigh 1.0mg of ciprofloxacin solid and add it into 1L phosphate buffer solution (pH=7.0) to prepare a 1.0mg / L ciprofloxacin aqueous solution system. Take 20mL ciprofloxacin aqueous solution and place it under UV radiation. In the reaction vessel 5 of the illumination device. Turn on the power supply 3, and adjust the irradiation intensity of the multi-band UV irradiation light source 1 to 0.025mW / cm before the reaction 2 (the surface of the reaction liquid...

Embodiment 3

[0060] Example 3: UV / H 2 o 2 System degradation of ciprofloxacin in water

[0061] 1. Materials

[0062] Multi-band ultraviolet irradiation device: the multi-band ultraviolet irradiation device manufactured in Example 1 is adopted, and the emission wavelength of the device includes five bands of 255nm, 265nm, 280nm, 310nm and 365nm.

[0063] Agents and solutions: ultrapure water (resistivity 18.2MΩ, DOC2 o 2 , volume concentration 30%), acetonitrile (HPLC grade), formic acid (HPLC grade), phosphate buffer solution (pH=6.85, Na 2 HPO 4 12H 2 O 0~200mg / L, KH 2 PO 4 0~100mg / L).

[0064] 2. Method

[0065] Take 1.0mg of ciprofloxacin solid and add it to 1L phosphate buffer solution to prepare a 1.0mg / L ciprofloxacin aqueous solution system. Before the reaction, adjust the irradiation intensity of UV-LED to 0.025mW / cm 2 (the surface of the reaction liquid surface). Take 20mL of ciprofloxacin aqueous solution and place it in the reaction vessel of the UV irradiation devi...

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Abstract

The invention belongs to the field of water supply and sewerage works / environmental engineering, and discloses a method for targeted degradation of quinolone antibiotics in water and a multiband ultraviolet (UV) radiation device used for the method. The method for targeted degradation of the quinolone antibiotics in water includes the following steps that wastewater containing the quinolone antibiotics is added with a H2O2 aqueous solution and / or aqueous solution containing S2O8<2>, and then the wastewater is degraded under the multiband UV radiation action, so that a water body for targeted degradation of the quinolone antibiotics is obtained. The invention further provides the multiband UV radiation device used for the method. According to the method, the multiband UV radiation device independently designed and developed is used as the main body to be combined with the H2O2 and S2O8<2>, so that a composite UV degradation technology is formed, and the technology can be used in a water supply treatment plant or wastewater treatment plant; and electric energy serves as the driving energy, UV radiation serves as the excitation energy, the H2O2 or S2O8<2> serves as the oxidizing agent donor, efficient targeted degradation of ciprofloxacin is realized, and finally the antibacterial activity and toxicity are weakened.

Description

technical field [0001] The invention belongs to the field of water supply and drainage engineering / environmental engineering, in particular to a method for targeted degradation of quinolone antibiotics in water and a multi-band ultraviolet irradiation device thereof. Background technique [0002] Antibiotic pollution is a widespread environmental problem. The large-scale production and abuse of antibiotics has led to increasingly serious antibiotic pollution in natural water bodies, especially rivers and lakes and other natural water bodies have varying degrees of antibiotic pollution. Quinolones (QNs) are widely used as a class of antibiotics. The basic structure is 4-quinolone acid (4-quinolone acid), which is effective against Gram-negative bacteria, Gram-positive bacteria, mycobacteria, anaerobic bacteria , Legionella, Mycoplasma and Chlamydia have broad-spectrum antibacterial properties and are the most widely used class of antibiotics in anti-infective drugs. In 2013,...

Claims

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Application Information

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IPC IPC(8): C02F1/32C02F1/72C02F101/34
CPCC02F1/32C02F1/722C02F1/725C02F2101/34C02F2103/343
Inventor 欧桦瑟张海璇刘娟
Owner JINAN UNIVERSITY
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