a sno 2 -gac particle and its preparation method and application

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 problems such as easy shedding, and achieve the effect of improving treatment efficiency and uniform loading

Active Publication Date: 2022-01-28
GUANGXI UNIV FOR NATITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Problems such as easy to fall off during the process

Method used

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  • a sno <sub>2</sub> -gac particle and its preparation method and application
  • a sno <sub>2</sub> -gac particle and its preparation method and application
  • a sno <sub>2</sub> -gac particle and its preparation method and application

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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 then 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 washe...

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 then take out 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 neutrality w...

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Abstract

The invention provides a SnO 2 ‑GAC particle and its preparation method and application, the invention belongs to the field of material chemical particle technology, the SnO 2 ‑GAC particles are made from abundant waste crops in Guangxi, SnCl 4 ·5H 2 O is a modifier, caustic is an activator, and transition metal oxide SnO is used 2 In situ modification, loaded particles prepared by microwave method. The particles are evenly loaded, and the modifier is not easy to fall off during the electrochemical treatment of wastewater, and when the particle electrode is used as a particle electrode to treat 4-chlorophenol wastewater in a three-dimensional electrochemical reaction, the removal rate of 4-chlorophenol can reach more than 95%. Improve the treatment efficiency of 4-chlorophenol wastewater.

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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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/30C02F1/461C02F1/28B01J20/20C02F101/36
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扬
Owner GUANGXI UNIV FOR NATITIES
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