Method for preparing iron and cerium compound by means of ultrasonic infiltration and application of method in fenton-like water treatment

A technology of ultrasonic impregnation and composite oxides, which is applied in natural water treatment, oxidized water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of easy loss of catalyst active components, unstable structure and low activity. , to achieve the effect of short immersion reaction time, easy control of reaction conditions and simple operation steps

Inactive Publication Date: 2016-01-20
RENMIN UNIVERSITY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing iron-cerium composites by ultrasonic impregnation to solve the problems of easy loss of catalyst active components, unstable structure and low activity in the Fenton-like water treatment system

Method used

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  • Method for preparing iron and cerium compound by means of ultrasonic infiltration and application of method in fenton-like water treatment
  • Method for preparing iron and cerium compound by means of ultrasonic infiltration and application of method in fenton-like water treatment
  • Method for preparing iron and cerium compound by means of ultrasonic infiltration and application of method in fenton-like water treatment

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Composition of simulated pharmaceutical wastewater: distilled water 100mL and diclofenac sodium 2mg.

[0019] Add 0.1g of iron-cerium complex to the simulated pharmaceutical wastewater, add hydrogen peroxide at a concentration of 100mmol / L, adjust the initial pH value to 5, and react for 20 minutes, filter the reacted solution through a 0.22 micron PTFE filter head, and collect the filtrate for use The concentration of diclofenac sodium was determined by high performance liquid chromatography and the removal rate was calculated.

[0020] High-performance liquid chromatography detection conditions: US Waterse2695 high-performance liquid chromatography, equipped with a 250mm×4.6mm C18 reversed-phase column and an ultraviolet detector. The ultraviolet detection wavelength is 275nm; elution conditions: the mobile phase is composed of glacial acetic acid aqueous solution and acetonitrile with a concentration of 0.05mol / L, the volume ratio is 30%:70%, the flow rate is 1ml / min...

Embodiment 2

[0022] Composition of simulated antibiotic wastewater: distilled water 100mL and amoxicillin 2mg.

[0023] Add 0.1g of iron-cerium complex to the simulated antibiotic wastewater, add hydrogen peroxide at a concentration of 100mmol / L, adjust the initial pH value to 5, and react for 20 minutes, filter the reacted solution through a 0.22 micron PTFE filter head, and collect the filtrate for use The concentration of amoxicillin was determined by high performance liquid chromatography and the removal rate was calculated.

[0024] High-performance liquid chromatography detection conditions: US Waterse2695 high-performance liquid chromatography, equipped with a 250mm×4.6mm C18 reversed-phase column and an ultraviolet detector. The ultraviolet detection wavelength is 225nm; elution conditions: the mobile phase is composed of ultrapure water and methanol at a concentration of 90%:10%, the flow rate is 1ml / min, the injection volume is 10 μL, and the column temperature is 30°C.

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Abstract

The invention discloses a method for preparing an iron and cerium compound oxide by means of ultrasonic infiltration and application of the method in fenton-like water treatment. The method for preparing the iron and cerium compound oxide by means of ultrasonic infiltration comprises the following steps that after cerium metal salt is dissolved in water, an alkaline aqueous solution is added for precipitation reaction, precipitation obtained after the reaction is completed is dried and ground, and cerium dioxide powder is obtained after natural cooling to the room temperature is conducted; after iron metal salt is dissolved in water, the cerium dioxide powder is added for ultrasonic infiltration, precipitation obtained after the reaction is completed is filtered and calcined, natural cooling to the room temperature is conducted, and the iron and cerium compound oxide is obtained. The iron and cerium compound oxide prepared through the ultrasonic infiltration method is simple in structure, higher in activity, the preparation method is simple in operation step and short in reaction time, the reaction condition is easy to control, and practical application value is achieved. After a catalytic reaction is conducted for 20 min in a fenton-like water treatment system, the removal effects on pharmaceutical waste water and antibiotic waste water can reach 81% and 87% respectively.

Description

technical field [0001] The invention belongs to the technical fields of environmental materials, environmental catalysis and environmental protection, and relates to a method for preparing iron-cerium composites by ultrasonic impregnation and its application in Fenton-like water treatment. Background technique [0002] The treatment of refractory industrial wastewater is a recognized problem in the field of sewage treatment at home and abroad. For this type of wastewater, there are more industrial wastewater such as printing and dyeing wastewater, pharmaceutical wastewater, and antibiotic wastewater. In this kind of wastewater, it often contains a higher concentration of refractory organic matter, even biological poisons, and there are many types. Therefore, biological methods are difficult to treat high-concentration refractory organic wastewater, while physical methods such as adsorption, extraction, and membrane separation methods do not degrade organic matter but remove...

Claims

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Application Information

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IPC IPC(8): B01J23/83B01J37/03B01J37/34C02F1/72C02F101/38C02F103/34
Inventor 张光明种珊田慧芳刘毓璨张楠黄挺方顺燕李昊坤
Owner RENMIN UNIVERSITY OF CHINA
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