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Method for catalytically removing antibiotics in water body and preparation method and application of catalyst

A catalyst and antibiotic technology, applied in the application field of the above catalyst, can solve the problem of low catalytic performance of the catalyst, and achieve the effects of improving treatment effect and energy efficiency, rapid and efficient removal, and improving catalytic effect.

Pending Publication Date: 2022-04-12
YANAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing a catalyst, which solves the problem that the catalytic performance of the catalyst in the prior art is relatively low

Method used

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  • Method for catalytically removing antibiotics in water body and preparation method and application of catalyst
  • Method for catalytically removing antibiotics in water body and preparation method and application of catalyst
  • Method for catalytically removing antibiotics in water body and preparation method and application of catalyst

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preparation example Construction

[0032] The preparation method of catalyst comprises the following steps:

[0033] Step 1. Add ammonium bifluoride to deionized water to obtain an ammonium bifluoride solution. The concentration of ammonium bifluoride is 6.6-41.6 mmol / L; add the ferrous oxide dispersion to the ammonium bifluoride solution, and the concentration of ferrous oxide is 5-41.6 mmol / L. 10g / L to obtain a mixed solution; wherein the mass ratio of ferrous oxide to ammonium bifluoride is 0.2:0.015~0.2:0.095, and the purity of ferrous oxide is 90%;

[0034] Step 2. Ultrasonic shearing is performed on the mixed solution. The ultrasonic shearing time is 5-20 minutes, and the ultrasonic power is 100-150W; then it is placed in a reaction kettle for hydrothermal reaction, and the hydrothermal reaction temperature is 100-200°C , the reaction time is 24h;

[0035] Step 3, the hydrothermal reaction product obtained in step 2 is separated by suction filtration, and the filter cake is washed with deionized water re...

Embodiment

[0045] Step 1. Add ammonium bifluoride to deionized water to obtain ammonium bifluoride solution, the concentration of ammonium bifluoride is 1.9 mg / ml; according to the mass ratio of ferrous oxide to ammonium bifluoride is 0.2:0.079, the ferrous oxide dispersion is added to In the ammonium bifluoride solution, the concentration of ferrous oxide is 5g / L to obtain a mixed solution;

[0046] Step 2. Perform ultrasonic shearing on the mixed solution. The time of ultrasonic shearing is 5min, and the ultrasonic power is 100W; then it is placed in the reactor, and the reactor is placed in an oven for hydrothermal reaction. The temperature is 180°C, and the reaction time is 24h;

[0047] Step 3, the hydrothermal reaction product obtained in step 2 is separated by suction filtration, and the filter cake is washed twice with deionized water;

[0048] Step 4. Dry the product on the filter cake in an oven at a drying temperature of 50°C and a drying time of 12 hours to obtain a dispersi...

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Abstract

The invention discloses a method for removing antibiotics in a water body by using a catalyst and a preparation method and application of the catalyst, and the method comprises the following steps: adding a ferrous oxide dispersion liquid into an ammonium bifluoride solution to obtain a mixed solution; putting the mixed solution into a reaction kettle for hydrothermal reaction; carrying out suction filtration separation on a hydrothermal reaction product, and washing a filter cake; drying a product on the filter cake to obtain a dispersion; and crushing and sieving the dispersion to obtain the fluorine-doped ferrous oxide catalyst. By controlling the mass ratio of the ferrous oxide dispersion liquid to the ammonium bifluoride solution, the reaction time and the reaction temperature, the pH window of FeO is effectively increased from 2-4 to a neutral condition, and the catalytic effect is improved; the fluorine-doped ferrous oxide catalyst can significantly improve the treatment effect and energy efficiency of the discharge plasma technology, does not cause secondary pollution, and is beneficial to the development of the discharge plasma technology. The antibiotics in the water can be quickly and efficiently removed.

Description

technical field [0001] The invention belongs to the technical field of water treatment agents, and relates to a catalyst preparation method, a method for removing water body antibiotics by using the catalyst, and an application of the catalyst. Background technique [0002] In recent years, due to the widespread use of antibiotics, the content of antibiotics in the water environment has become higher and higher, and the distribution has become more and more widespread. Antibiotics in water will pose a major threat to the ecological environment and human health. The existing sewage treatment process cannot effectively remove antibiotics, so it is urgent to develop efficient antibiotic wastewater treatment technology. Advanced oxidation technology degrades organic molecules into small molecular substances or directly mineralizes them through the strong oxidation of hydroxyl radicals (OH), which is currently a common method for treating refractory organics in water bodies. Am...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/128C02F1/46C02F101/34C02F101/36C02F101/38
Inventor 任景俞姚洲舟魏倩
Owner YANAN UNIV