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Preparation method of catalyst for effectively catalyzing and oxidating medical contaminations in water

A catalyst and high-efficiency technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, oxidized water/sewage treatment, physical/chemical process catalyst, etc., can solve problems such as poor effect and serious metal dissolution

Inactive Publication Date: 2011-10-19
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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Problems solved by technology

These catalysts generally have good catalytic effect under acidic conditions, but the phenomenon of metal dissolution is serious, and the effect is often not good under neutral pH conditions.

Method used

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  • Preparation method of catalyst for effectively catalyzing and oxidating medical contaminations in water

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Embodiment Construction

[0010] The technical characteristics and advantages of the present invention can be seen through the embodiments and application examples given below.

[0011] 1. Preparation of β-FeOOH / MA catalyst

[0012] A certain amount of FeCl 3 ·6H 2 O and a certain amount of urea are dissolved in deionized water, then a certain amount of mesoporous alumina carrier is added, the pH value is adjusted to 1.6 with hydrochloric acid, and then heated in a water bath at 100°C for 2-6 hours. Then let it cool down to room temperature naturally, take it out, and rinse it with deionized water. According to this procedure, a catalyst with an iron content of 1-15 wt% was synthesized to obtain a β-FeOOH / MA sample.

[0013] 2. Catalytic ozonation activity of β-FeOOH / MA

[0014] In a 1L columnar bubbling semi-continuous reactor, ibuprofen was used as the target pollutant to evaluate the β-FeOOH / MA catalytic ozonation activity of the present invention. The reaction temperature is room temperature, ...

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Abstract

The invention provides a preparation method of a catalyst for effectively catalyzing and oxidating medical contaminations in water, comprising the following main steps of dissolving a certain amount of FeCl3*6H2O and a certain amount of carbamide in deionized water; subsequently adding a certain quantity of mesopore alumina carriers; adjusting the pH value of the solution to 1.6 by hydrochloric acid; heating the solution in a water bath under the temperature of 100 DEG C for 2 to 6 hours; subsequently naturally cooling the solution to room temperature; and taking out residuals and washing the residues by the deionzed water. According to the above steps, the catalyst with iron content of 1-15wt% is synthesized and a Beta-FeOOH / MA sample is obtained. Compared with the independent ozone oxidation, the catalyst can effectively improve the mineralization efficiency of the ibuprofen in the water, thereby having good stability.

Description

technical field [0001] The invention relates to a method for developing a catalyst for catalyzing ozone oxidation, in particular to a method for preparing a mesoporous alumina-loaded β-FeOOH catalyst and research on catalytic ozone oxidation of medical pollutants in water. Background technique [0002] Ozone has received extensive attention in the field of water treatment in recent years due to its strong oxidizing and disinfecting capabilities. Although ozone can oxidize many refractory organic substances in water, there are also some shortcomings, such as low solubility of ozone in water and easy decomposition, poor reaction selectivity with organic substances, and it is difficult to completely decompose organic substances into CO 2 and H 2 O et al. These factors limit the application of ozone in practical water treatment technology. The utilization rate of ozone and the degradation efficiency of organic pollutants are relatively low for simple ozonation, so it is neces...

Claims

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Application Information

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IPC IPC(8): B01J23/745C02F1/78
Inventor 胡春袁芳杨力
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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