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Bismuth tungstate catalyst and preparation method thereof as well as application of combined ultrasound to catalysis and degradation of antibiotics

A bismuth tungstate and catalyst technology, which is applied in the field of medical waste treatment, can solve problems such as difficult to effectively remove antibiotic drug pollution, human health threats, and induction of drug-resistant bacteria, and achieve easy post-processing, simple synthesis methods, and degradation The effect of improving efficiency

Inactive Publication Date: 2018-09-18
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only causes environmental pollution, but also induces the emergence of drug-resistant bacteria, which enriches along the food chain and further poses a serious threat to human health.
However, the conventional sewage biological treatment process is difficult to effectively remove the contamination of antibiotics

Method used

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  • Bismuth tungstate catalyst and preparation method thereof as well as application of combined ultrasound to catalysis and degradation of antibiotics
  • Bismuth tungstate catalyst and preparation method thereof as well as application of combined ultrasound to catalysis and degradation of antibiotics
  • Bismuth tungstate catalyst and preparation method thereof as well as application of combined ultrasound to catalysis and degradation of antibiotics

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1 bismuth tungstate catalyst

[0021] (1) Preparation method

[0022] Weigh 0.192g (0.5mmol) of citric acid, 0.970g (1.0mmol) of bismuth nitrate, 0.330g (0.5mmol) of sodium tungstate and add 20mL of distilled water to dissolve them, mix the above three solutions in a 250mL conical flask, and Sodium aqueous solution to adjust pH=5, magnetically stirred for 30 minutes, ultrasonicated for 30 minutes (power 200W), transferred to a 100mL reaction kettle, placed in a 180°C oven and heated for 24 hours, cooled to room temperature naturally after heating was stopped, the filter residue was retained by suction filtration, and the filtrate was discarded , washed several times with distilled water and absolute ethanol, respectively, until the pH of the filtrate remained unchanged (measured by ordinary pH test paper, it was neutral), and the filter residue was dried in an oven at 80°C for 2.0 hours to obtain a bismuth tungstate catalyst.

[0023] (2) Gained bismuth tung...

Embodiment 2

[0024] Example 2 The method of bismuth tungstate catalyst combined with ultrasonic catalytic degradation of ciprofloxacin hydrochloride

[0025] (1) The method is as follows

[0026] Regulate the concentration of ciprofloxacin hydrochloride aqueous solution to be 10mg / L, the bismuth tungstate catalyst prepared in embodiment 1 is added in the ciprofloxacin hydrochloride aqueous solution, ultrasonic under room temperature dark condition, ultrasonic power is 200W, ultrasonic source distance liquid Surface 30mm, catalytic degradation 1-3h. The solid-liquid ratio of the bismuth tungstate catalyst to the aqueous solution of ciprofloxacin hydrochloride is (1g-5g): 1L.

[0027] (2) The effect of the addition amount of bismuth tungstate catalyst on the degradation rate of ciprofloxacin hydrochloride by catalytic degradation

[0028] The present invention: in 5 Erlenmeyer flasks that 20mL concentration is the ciprofloxacin hydrochloride aqueous solution of 10mg / L, add respectively the...

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Abstract

The invention discloses a bismuth tungstate catalyst and a preparation method thereof as well as application of combined ultrasound to catalysis and degradation of antibiotics. A hydrothermal synthesis method is adopted to synthesize the bismuth tungstate catalyst with a square plate-shaped crystal form under the condition that the pH value is equal to 5. A catalyst synthesis method is simple, convenient, safe, and easy for post-treatment. The degradation rate of a ciprofloxacin hydrochloride water solution catalyzed and degraded by a catalyst and ultrasonic combination sound is greater than that of a ciprofloxacin hydrochloride water solution independently degraded by bismuth tungstate, and the bismuth tungstate has better sound catalytic activity. The bismuth tungstate is used for catalysis and ultrasonic degradation of the ciprofloxacin hydrochloride water solution so as to enable the degradation efficiency of the ciprofloxacin hydrochloride water solution to be improved, and the bismuth tungstate catalyst has guiding significance for the synthesis of a more effective sound catalysis nano material.

Description

technical field [0001] The invention relates to the field of treatment of medical waste liquid, in particular to a preparation method of bismuth tungstate in square plate shape and its application in the treatment of ciprofloxacin hydrochloride aqueous solution. Background technique [0002] With the development of medical technology and the use of a large number of antibiotics, a large amount of antibiotics remain in the discharged sewage. This not only causes environmental pollution, but also induces the emergence of drug-resistant bacteria, which enriches along the food chain and further poses a serious threat to human health. However, conventional sewage biological treatment processes are difficult to effectively remove antibiotic pollution. Due to its unique cavitation effect, ultrasonic has the characteristics of high removal efficiency, mild degradation conditions, fast degradation speed, wide application range and simple facilities in the degradation of pollutants, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/31C02F1/36C02F1/72C02F101/38
CPCB01J23/31C02F1/36C02F1/725C02F2101/38C02F2103/003
Inventor 刘彬高博王新王晓芳赵洪锐许明玲周玲玲
Owner LIAONING UNIVERSITY
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