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Photodegradation agent for carbamazepine, and method and device for degrading carbamazepine

A technology for carbamazepine and photodegradants, which is applied in the field of carbamazepine degradation and photodegradants for carbamazepine, can solve problems such as unsatisfactory carbamazepine degradation effects, and achieve improved degradation rates, improved degradation rates, and strong Oxidative effect

Pending Publication Date: 2021-10-15
JILIN JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional ultraviolet sulfite system (UV / S(IV)) is not ideal for the degradation of carbamazepine

Method used

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  • Photodegradation agent for carbamazepine, and method and device for degrading carbamazepine
  • Photodegradation agent for carbamazepine, and method and device for degrading carbamazepine
  • Photodegradation agent for carbamazepine, and method and device for degrading carbamazepine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] (1) use figure 1 The shown device utilizes UV / PS / S(IV) system to degrade carbamazepine

[0053] Under the irradiation of a 10W low-pressure mercury lamp, the carbamazepine solution (pH=7) and the PS / S(IV) compound salt solution were mixed, and degraded at 20° C. for 40 minutes. The degradation rate of carbamazepine was 98.3%. Among them, the initial concentration of CBZ [CBZ] 0 =21.16μM (μM is μmol / L), initial concentration of PS [PS] 0 = S(IV) initial concentration [S(IV)] 0 =0.3mM (mM is mmol / L), the molar ratio of PS, S(IV) and CBZ=15:15:1, that is, the molar ratio of PS to S(IV)=1:1.

[0054] The samples were analyzed for the concentration of CBZ by high performance liquid chromatography (HPLC). The ratio of the mobile phase is methanol: 0.1% acetic acid-water volume ratio = 6:4, the detection wavelength is 285nm, the flow rate of the mobile phase is 0.8mL / min, the injection volume of a single sample is 20μL, and the retention time of carbamazepine is 5.5min. ...

Embodiment 2

[0083] According to the method of Example 1 to degrade CBZ, the difference from Example 1 is that the initial concentration of PS is 0.3mM, and the molar ratio of PS to the initial concentration of S(IV) is 1:1.

Embodiment 3

[0085] Degrade CBZ according to the method of Example 1, the difference from Example 1 is that the initial concentration of S(IV) is 0.6mM, and the molar ratio of PS to the initial concentration of S(IV)=1:2.

[0086] Embodiment 1~3 is as follows to CBZ degradation rate result Figure 9 As shown, the reaction kinetics fitting was performed on the degradation process of CBZ, and the obtained results were as follows Figure 10 and shown in Table 5.

[0087] Table 5 Different PS:S(IV) molar ratios to the reaction kinetic equation and parameters of UV / PS / S(IV) degradation CBZ

[0088]

[0089] Depend on Figure 9 It can be seen that when the initial concentration of PS remains unchanged at 0.3mM, the initial concentration of S(IV) increases from 0.3mM to 0.6mM, and the degradation rate of CBZ has an upward trend. At 40min, the degradation rate of CBZ increased from 89.4% to 94.1%. This may be due to the high concentration of sulfite will generate more sulfate radicals, whic...

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Abstract

The invention provides a photodegradation agent for carbamazepine and a method and device for degrading carbamazepine, and relates to the technical field of organic pollutant degradation. The photodegradation agent provided by the invention comprises a persulfate / sulfite composite salt solution. According to the method, carbamazepine is degraded by ultraviolet (UV), persulfate (PS) and sulfite (S (IV)) together, and hydrogen sulfate radicals (HSO3 <->) generated by hydrolysis of the sulfite in water participate in a reaction to generate a large amount of SO4 <-> and HO <->, and the carbamazepine degradation rate and degradation efficiency are improved. Compared with an ultraviolet persulfate system (UV / PS) and an ultraviolet sulfite system (UV / S (IV)), the ultraviolet / persulfate / sulfite composite advanced oxidation system (UV / PS / S (IV)) provided by the invention has higher oxidability, and is high in degradation rate and degradation efficiency on carbamazepine.

Description

technical field [0001] The invention relates to the technical field of organic pollutant degradation, in particular to a photodegradant of carbamazepine, a method and a device for degrading carbamazepine. Background technique [0002] Carbamazepine (CBZ), as a common antiepileptic drug, is widely used in clinical treatment. Carbamazepine has strong persistence and stability in water, and is a very representative refractory PPCPs pollutant. It is difficult to be removed no matter in the natural circulation of water body or in conventional water treatment processes. Therefore, it is urgent to find an effective method to solve the pollution problem of carbamazepine in the environment. [0003] In recent years, based on the sulfate radical (SO 4 - ·) Advanced oxidation technology has received extensive attention from researchers. Heterogeneous photocatalytic persulfate (PS) system to generate SO with strong oxidation activity 4 · - And · OH can be efficiently carried out a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/32C02F101/34C02F101/38
CPCC02F1/32C02F2101/38C02F2101/34C02F2305/023C02F1/325C02F1/725C02F2305/02C02F2305/10
Inventor 林英姿杨昊李思文刘根李浩周明亮魏宇航
Owner JILIN JIANZHU UNIVERSITY
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