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A kind of preparation method of porous boron nitride-based composite material for organic wastewater purification

A composite material, organic wastewater technology, applied in chemical instruments and methods, separation methods, inorganic chemistry, etc., can solve the problems of hindering the practical application of porous boron nitride, secondary environmental pollution, high energy consumption, and improve regeneration and reuse. performance, reduced regeneration costs, and the effect of a simple preparation process

Active Publication Date: 2022-04-15
HUBEI UNIV OF EDUCATION
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, these regeneration methods have defects such as causing secondary pollution to the environment, high cost, and high energy consumption. This low-efficiency and high-pollution regeneration method hinders the practical application of porous boron nitride in the field of water purification.

Method used

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  • A kind of preparation method of porous boron nitride-based composite material for organic wastewater purification
  • A kind of preparation method of porous boron nitride-based composite material for organic wastewater purification
  • A kind of preparation method of porous boron nitride-based composite material for organic wastewater purification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] see Figure 1-4 , (1) Weigh porous boron nitride and ferric chloride with a mass ratio of 1:0.01, place them in deionized water, stir for 0.5 hours, and then sonicate for 0.1 hours;

[0025] (2) Adjust the pH value of the mixed solution obtained in step (1) to 9, and stir for 0.5 hours;

[0026] (3) Place the mixed solution obtained in step (2) in an autoclave, and heat it to 140° C. under the assistance of microwaves, and keep it warm for 0.1 hour;

[0027] (4) After the mixed solution obtained in step (3) is cooled to room temperature, the solid powder is obtained by filtration, and the gained solid powder is placed in a ball mill jar of a ball mill, and the ball mill is milled for 10 minutes at a speed of 100 revolutions per minute;

[0028] (5) The solid mixture obtained in step (4) was heat-treated at 600° C. in an ammonia atmosphere with a flow rate of 10 ml / min, the heating rate was 1° C. per minute, and the holding time was 3 hours. The resulting product is a ...

Embodiment 2、 example 3

[0031] Change the mass ratio of porous boron nitride and ferric chloride in step (1) in Example 1 to 1:1, 1:100, and other operations are the same as in Example 1, and the product obtained is the same as in Example 1 .

Embodiment 4、 example 5

[0033] Change the stirring time in step (1) in embodiment 1 to 1 hour, 2 hours, other each operation is all identical with embodiment 1, obtains product with embodiment 1.

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Abstract

A preparation method of a porous boron nitride-based composite material for organic wastewater purification. The method adopts two-step synthesis: the first step is to prepare porous boron nitride by a thermal cracking method; the second step is to use a microwave-assisted hydrothermal method Preparation of α-phase iron oxide / porous boron nitride-based composite water purification materials. The invention utilizes microwave assistance, reduces synthesis time, has simple technological process and low pollution, and is suitable for low-cost large-scale production. The regeneration efficiency of the α-phase iron oxide / porous boron nitride-based composite water purification material obtained by the invention is increased from 10.8% of the pure porous boron nitride before composite to 93.5%, which greatly improves the performance of the porous boron nitride-based water purification material. Regeneration and reuse performance. In addition, in the regeneration process of the obtained composite water purification material, the conventional high-temperature calcination and pickling processes are not used, but the ozone-assisted regeneration method is used, which avoids secondary pollution and reduces the regeneration cost.

Description

technical field [0001] The technical solution of the invention belongs to the technical field of water treatment and environmental treatment, and specifically relates to a method for preparing a porous boron nitride-based composite material used for purifying organic wastewater. Background technique [0002] With the growth of the world's population and the acceleration of industrialization, environmental problems, especially water pollution, have increasingly become one of the key issues that people need to solve. Untreated industrial and domestic wastewater is directly discharged, posing a huge threat to the natural ecological environment and human health. Purification and treatment of sewage through advanced technologies such as adsorption is of great significance to solve the problem of water pollution. [0003] Traditional adsorption materials for water purification, such as activated carbon, carbon fiber membranes, and aminated polymer fibers, have good adsorption cap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/02B01J20/28B01J20/30B01J20/34C02F1/28C02F1/72C02F1/78C02F101/30
CPCB01J20/0229B01J20/0248B01J20/28054B01J20/3475C02F1/281C02F1/725C02F1/78C02F2101/30
Inventor 李杰戴伟吴田陶军晖何适
Owner HUBEI UNIV OF EDUCATION
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