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SnO2-GAC particles and preparation method and application thereof

A technology of sno2-gac and particles, which is applied in chemical instruments and methods, water/sewage treatment equipment, and other chemical processes, can solve the problems of easy falling off, and achieve the effects of uniform heating, low efficiency, and long heating time

Active Publication Date: 2019-08-02
GUANGXI UNIV FOR NATITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Problems such as easy to fall off during the process

Method used

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  • SnO2-GAC particles and preparation method and application thereof
  • SnO2-GAC particles and preparation method and application thereof
  • SnO2-GAC particles and preparation method and application thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0045] SnO 2 -The specific steps of the preparation method of the GAC particles include:

[0046] (1) Put the bagasse in a drying oven, take it out after drying for 1.6 hours at a temperature of 103°C, and obtain the pretreated raw material;

[0047] (2) Put the pretreated raw material into a KOH solution with a mass percent concentration of 9wt%, and combine it with ultrasonic soaking for 0.6 hours, filter out the solid matter therein, and dry at a temperature of 103° C. to obtain the primary product;

[0048] (3) Put the initial product in SnCl with a mass concentration of 150g / L 4 ·5H 2 Soak in O solution combined with ultrasound for 0.8 hours, filter out the solids, dry at 103°C, put them in a microwave chemical reactor, treat them under the condition of microwave power of 640W for 13 minutes, and take them out to obtain the crude product;

[0049] (4) after the potassium hydroxide solution cleaning that the crude product is 4.5wt% with a concentration, it is washed to ...

Embodiment 2

[0051] SnO 2 -The specific steps of the preparation method of the GAC particles include:

[0052] (1) Put the astragalus waste residue in a drying oven, take it out after drying at 104° C. for 1.8 hours, and obtain the pretreated raw material;

[0053] (2) Put the pretreated raw material into a KOH solution with a mass percent concentration of 8.5wt%, and combine it with ultrasonic soaking for 0.8 hours, filter out the solids therein, and dry at a temperature of 104° C. to obtain the primary product;

[0054] (3) Put the initial product in SnCl with a mass concentration of 120g / L 4 ·5H 2 Soak in O solution combined with ultrasound for 0.8 hours, filter out the solids, dry at 104°C, put them in a microwave chemical reactor, treat them under the condition of microwave power of 620W for 14 minutes, and take them out to obtain the crude product;

[0055] (4) after the potassium hydroxide solution cleaning that the crude product is 4.7wt% with a concentration, it is washed to ne...

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Abstract

The invention provides SnO2-GAC particles and a preparation method and an application thereof and belongs to the technical field of material chemistry particles. The SnO2-GAC particles are supported particles prepared with a microwave method and modified with transition metal oxide SnO2 in situ with abundant waste crop materials in Guangxi, SnCl4.5H2O as a modifier and caustic alkali as an activator. The particles are uniformly supported, modifying substances are not prone to falling during electrochemical treatment of wastewater, and the removal rate of 4-chloropheol can reach 95% or above when the particles are used as a particle electrode to treat 4-chlorophenol wastewater in 3D electrochemical reactions. The tretament efficiency of 4-chlorophenol wastewater is improved.

Description

technical field [0001] The invention belongs to the technical field of material chemical particles, in particular to a SnO 2 -GAC particles and their preparation methods and applications. Background technique [0002] Phenolic compounds are aromatic compounds and are one of the 129 environmental priority pollutants listed by the US Environmental Protection Agency (EPA). Severe pollution, resulting in widespread detection of phenolic pollutants in surface water, groundwater, and soil. Common methods for treating phenolic organics include biological methods, physical methods, and chemical oxidation methods, among which the electrochemical oxidation method is favored for its advantages of simple operation and less secondary pollution. [0003] Traditional two-dimensional electrolysis has problems such as low current efficiency and high energy consumption. In contrast, three-dimensional electrolysis has been better used in wastewater treatment due to its advantages such as sma...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F1/28B01J20/30B01J20/20C02F101/36
CPCC02F1/46109C02F1/46114C02F1/46176C02F1/4672C02F1/4674C02F1/281C02F1/283B01J20/06B01J20/20C02F2001/46133C02F2101/36C02F2201/4614C02F2201/46135C02F2001/46142
Inventor 李媚谢树明覃琴廖安平蓝平蓝丽红卢彦越钟华黄招阳
Owner GUANGXI UNIV FOR NATITIES
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