Sn-GAC particle, and application thereof in three-dimensional electrochemical reaction treatment of 4-chlorophenol wastewater

A technology of chemical reaction and three-dimensional electricity, applied in the direction of oxidized water/sewage treatment, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of limited removal rate, difficult removal, high removal cost, etc., to achieve complete degradation and no The effect of secondary pollution and good electrochemical stability

Inactive Publication Date: 2018-04-20
GUANGXI UNIV FOR NATITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problems of difficult removal, limited removal rate, high removal cost and complicated operation in the traditional treatment method of phenol-containing industrial wastewater in the prior art, and provides a kind of Sn-GAC particle preparation and its three-dimensional electrochemical reaction Application in the treatment of 4-chlorophenol wastewater

Method used

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  • Sn-GAC particle, and application thereof in three-dimensional electrochemical reaction treatment of 4-chlorophenol wastewater
  • Sn-GAC particle, and application thereof in three-dimensional electrochemical reaction treatment of 4-chlorophenol wastewater
  • Sn-GAC particle, and application thereof in three-dimensional electrochemical reaction treatment of 4-chlorophenol wastewater

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0029] (1) Pretreatment of granular activated carbon: boil the granular activated carbon with a large amount of deionized water, dry it, and set aside.

[0030] (2) According to the mass ratio: 1:6. Weigh the SnCl in turn 4 ·5H 2 O and GAC.

[0031] (3) SnCl 4 ·5H 2O is dissolved in an organic alcohol solvent to obtain a mixed solution, and then GAC is soaked in the mixed solution, shaken at 150r / min for 2 hours, and the crude product of the supported Sn-GAC particles is obtained, and then dried and roasted at 300°C to obtain the supported Sn-GAC particles. Sn–GAC particles.

preparation Embodiment 2

[0033] (1) Pretreatment of granular activated carbon: boil the granular activated carbon with a large amount of deionized water, dry it, and set aside.

[0034] (2) According to the mass ratio: 1:7. Weigh the SnCl in turn 4 ·5H 2 O and GAC.

[0035] (3) SnCl 4 ·5H 2 O was dissolved in an organic alcohol solvent to obtain a mixed solution, and then GAC was soaked in the mixed solution, and shaken at 175r / min for 4 hours to obtain the crude product of supported Sn-GAC particles, which was then dried and calcined at 400°C to obtain the supported Sn-GAC particles. Sn–GAC particles.

preparation Embodiment 3

[0037] (1) Pretreatment of granular activated carbon: boil the granular activated carbon with a large amount of deionized water, dry it, and set aside.

[0038] (2) According to the mass ratio: 1:8. Weigh the SnCl in turn 4 ·5H 2 O and GAC.

[0039] (3) SnCl 4 ·5H 2 O is dissolved in an organic alcohol solvent to obtain a mixed solution, and then GAC is soaked in the mixed solution, shaken at 200r / min for more than 6 hours, and the crude product of supported Sn-GAC particles is obtained, and then dried and roasted at 500°C to obtain the loaded type Sn–GAC particles.

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Abstract

The invention discloses a Sn-GAC particle. The particle is a supported Sn-GAC particle prepared by loading and modifying granular active carbon on Sn metal ions through an impregnation technology. A bipolar three-dimensional electrochemical reactor is constructed by the supported Sn-GAC particle used as a particle electrode, a dimensionally stable anode (DSA) electrode used as an anode and a titanium plate used as a cathode, and a three-dimensional electrochemical reaction is carried out under the action of electrochemical oxidation to finally degrade 4-chlorophenol into carbon dioxide and water. When the Sn-GAC particle is used to treat 4-chlorophenol wastewater, the 4-chlorophenol removal rate can reach 90% or more. The particle disclosed in the invention has the advantages of simple preparation technology, repeated use, great reduction of the 4-chlorophenol wastewater treatment cost, and improvement of the 4-chlorophenol treatment efficiency.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, in particular to the preparation of Sn-GAC particles and its application in three-dimensional electrochemical reaction treatment of 4-chlorophenol wastewater. Background technique [0002] With the rapid development of petrochemical, plastic, synthetic fiber and other industries, phenolic wastewater generated in production is discharged into nature, causing water pollution and affecting the growth and reproduction of aquatic organisms. Phenol-containing wastewater is a refractory toxic organic substance, and it is also a difficult point in environmental governance. The discharge of phenolic substances is strictly controlled at home and abroad. [0003] The treatment of phenolic industrial wastewater has also become one of the hot research topics. At present, the adsorption method can generally be used for the treatment of wastewater containing phenolic substances, and the adsorbent ofte...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F1/72C02F101/36
CPCC02F1/46109C02F1/4672C02F2001/46133C02F2101/36
Inventor 李媚覃琴廖安平陈熠嘉谢树明蓝平黄招阳
Owner GUANGXI UNIV FOR NATITIES
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