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Preparation method of electro-Fenton cathode material based on carbon felt-supported iron nanoparticles and application of electro-Fenton cathode material in degradation of organic pollutants in water

A cathode material, iron nanotechnology, applied in the direction of water pollutants, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of high cost, difficult to widely use, single, etc., to ensure continuous degradation, large specific surface area, The effect of high processing efficiency

Active Publication Date: 2019-06-18
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many types of organic pollutants, which have a great impact on environmental ecology and human health, and have a certain hindering effect on sustainable development
At present, my country's treatment of industrial wastewater, domestic sewage and soil-polluted waters is relatively single, with poor selectivity, difficult to be widely used, high cost, time-consuming and labor-intensive, and poor purification effect

Method used

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  • Preparation method of electro-Fenton cathode material based on carbon felt-supported iron nanoparticles and application of electro-Fenton cathode material in degradation of organic pollutants in water
  • Preparation method of electro-Fenton cathode material based on carbon felt-supported iron nanoparticles and application of electro-Fenton cathode material in degradation of organic pollutants in water
  • Preparation method of electro-Fenton cathode material based on carbon felt-supported iron nanoparticles and application of electro-Fenton cathode material in degradation of organic pollutants in water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Preparation of Electro-Fenton Cathode Materials Based on Carbon Felt Supported Iron Nanoparticles:

[0028] (1) Pretreatment: select carbon fiber materials with a specification of 3cm*9cm*0.5cm, soak them in deionized water and ethanol for 30 minutes, and then wash and dry them for later use;

[0029] (2) Preparation of aniline hydrochloride solution and ferrous sulfate solution: aniline hydrochloride solution is mixed and prepared by aniline, concentrated hydrochloric acid and deionized water, and its mass ratio is 9:16:75, then carry out magnetic stirring for 30min; ferrous sulfate The solution is prepared from heptahydrate, ferrous sulfate and deionized water, and the molar concentration is 0.1mol / L;

[0030] (3) An electrodeposition device is set, and electrodes in the electrodeposition device include an anode, a cathode and a reference electrode, wherein the anode is connected to the positive pole of the electrochemical workstation, and the cathode is connected to ...

Embodiment 2

[0037] Embodiment 1 makes the removal effect of the electric Fenton cathode material based on carbon felt loaded iron nanoparticles to different dye liquors:

[0038] Reaction solution volume: 100mL;

[0039] Reaction solution temperature: 25±10°C;

[0040] The initial pH value of the reaction solution: 3;

[0041] Electrode area: 27cm 2 ;

[0042] Electrolyte concentration: 40mM Na 2 SO 4 solution;

[0043] Oxygen flow rate: 100mL / min;

[0044] Current intensity: 100mA;

[0045] Reaction time: 60min;

[0046] Different dye solutions: methyl orange, Congo red, rhodamine B;

[0047] Dye solution concentration: 100mg / L.

[0048] Table 1 Electro-Fenton cathode material is used as the cathode to the removal rate of different dye solutions

[0049]

[0050]

[0051] It can be seen from Example 2 that the electro-Fenton cathode material based on carbon felt-loaded iron nanoparticles prepared in Example 1 is particularly remarkable in the degradation efficiency of di...

Embodiment 3

[0053] Embodiment 1 makes the effect on methyl orange removal effect under different pH conditions based on the electric Fenton cathode material of carbon felt-loaded iron nanoparticles:

[0054] Reaction solution volume: 100mL;

[0055] Reaction solution temperature: 25±10°C;

[0056] Electrode area: 27cm 2 ;

[0057] Electrolyte concentration: 40mM Na 2 SO 4 solution;

[0058] Oxygen flow rate: 100mL / min;

[0059] Current intensity: 100mA;

[0060] Reaction time: 120min;

[0061] Dye solution concentration: 100mg / L methyl orange solution;

[0062] The initial pH value of the reaction solution: 2, 3, 4, 5.

[0063] Table 2 The effect of electro-Fenton cathode materials on the removal rate of methyl orange under different pH conditions

[0064] pH

2

3

4

5

Removal rate

97.8％

96.7％

91.3％

92.1％

[0065] As can be seen from Example 3, under acidic conditions, the electro-Fenton cathode material based on carbon felt-loaded iro...

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Abstract

The invention discloses a preparation method of an electro-Fenton cathode material based on carbon felt-supported iron nanoparticles and application of the electro-Fenton cathode material in the degradation of organic pollutants in water, and belongs to the technical field of preparation of electro-Fenton cathode materials and electro-Fenton water treatment. The preparation method and the electro-Fenton cathode material are characterized in that polyaniline is supported on a pure carbon felt through electrochemical deposition, iron particles are supported to obtain an iron carbon-doped porouscomposite carbon fiber material; a carbon felt acting as a cathode material can be applied to an electro-Fenton water treatment apparatus, air is charged in, and therefore, hydroxyl radicals are generated by catalysis at a cathode, and organic pollutants in water can be degraded. With the characteristic fully utilized that a carbon fiber has large specific surface area, the preparation method herein has the advantages of high treatment efficiency and greenness and the like, and has economic and social benefits for the field of treatment of industrial printing and dyeing waster and groundwater.

Description

technical field [0001] The invention belongs to the technical field of preparation of electro-Fenton cathode materials and electro-Fenton water treatment, and specifically relates to a preparation method of electro-Fenton cathode materials based on carbon felt-loaded iron nanoparticles and its application in degrading organic pollutants in water . Background technique [0002] In recent years, my country's main rivers and lakes have been polluted by organic matter to varying degrees. The main polluted areas are the middle and lower reaches of the Yangtze River, the Yellow River Basin, the Pearl River Delta and the Songhua River Basin. According to the monitoring results of many years in my country, there are 68 priority pollutants in water, including 58 kinds of toxic organic pollutants. The water pollution in my country is mainly composed of organic pollutants. Among them, persistent organic pollutants are extremely harmful to the environment and ecology, are difficult to ...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F1/72C02F101/30
Inventor 吴西林周维露伍日昕王浩陈建荣王方园
Owner ZHEJIANG NORMAL UNIVERSITY
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