A kind of short-chain quaternary ammonium nitrogen modified mesoporous biochar and its preparation method and application

A chain quaternary amine nitrogen and biochar technology, which is applied in the field of short-chain quaternary amine nitrogen modified mesoporous biochar and its preparation and application, can solve the problems of poor conductivity and poor perchlorate adsorption effect, and achieve High use value, easy industrial application, and mild preparation conditions

Active Publication Date: 2022-04-19
欣创环保科技(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the existing biochar materials are used to adsorb perchlorate, the adsorption effect on perchlorate is poor
In addition, when the existing biochar is used as an electrode material for electro-adsorption to remove inorganic ion pollutants, there is still a defect of poor conductivity.

Method used

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  • A kind of short-chain quaternary ammonium nitrogen modified mesoporous biochar and its preparation method and application
  • A kind of short-chain quaternary ammonium nitrogen modified mesoporous biochar and its preparation method and application
  • A kind of short-chain quaternary ammonium nitrogen modified mesoporous biochar and its preparation method and application

Examples

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Effect test

Embodiment 1

[0044] A preparation method of short-chain quaternary ammonium nitrogen modified mesoporous biochar, comprising the following steps:

[0045] (1) Wash the dust and other impurities on the surface of the raw bean dregs with distilled water, filter, and dry the obtained solid in an electric blast drying oven at 80°C until the quality is constant, and seal it for storage. Weigh 20 g of bean dregs and immerse in 290 mL of 1 mol / L potassium carbonate solution (prepared by dissolving potassium carbonate in water), mix evenly with a mixer, and continue stirring for 1 hour to obtain a mixed liquid of bean dregs.

[0046] (2) According to the quality of the zinc oxide microparticles being 10% of the total mass of the zinc oxide microparticles and the biomass material, get 5.56g, a mass concentration of 40% of the zinc oxide microparticles mixed solution and add the bean dregs mixed solution obtained in the step (1) , Sealed and stirred at room temperature for 24h. The impregnated samp...

Embodiment 2

[0055] A preparation method of short-chain quaternary ammonium nitrogen modified mesoporous biochar, comprising the following steps:

[0056] (1) Wash the dust and other impurities on the surface of the raw bean dregs with distilled water, filter, and dry the obtained solid in an electric blast drying oven at 80°C until the quality is constant, and seal it for storage. Weigh 20 g of bean dregs and immerse in 290 mL of 1 mol / L potassium carbonate solution, mix evenly with a stirrer, and continue stirring for 1 hour to obtain a mixed liquid of bean dregs.

[0057] (2) According to the quality of the zinc oxide microparticles being 15% of the total mass of the zinc oxide microparticles and the biomass material, get 8.823g, a mass concentration of 40% of the zinc oxide microparticle mixed solution and add it to the okara mixed solution obtained in step (1). , Sealed and stirred at room temperature for 24h. The impregnated sample was dried in an electric blast drying oven at 105°C...

Embodiment 3

[0065] A preparation method of short-chain quaternary ammonium nitrogen modified mesoporous biochar, comprising the following steps:

[0066] (1) Wash the dust and other impurities on the surface of the raw bean dregs with distilled water, filter, and dry the obtained solid in an electric blast drying oven at 80°C until the quality is constant, and seal it for storage. Weigh 20 g of bean dregs and immerse in 290 mL of 1 mol / L potassium carbonate solution, mix evenly with a stirrer, and continue stirring for 1 hour to obtain a mixed liquid of bean dregs.

[0067] (2) According to the quality of the zinc oxide microparticles being 20% ​​of the total mass of the zinc oxide microparticles and the biomass material, get 12.5g, a mass concentration of 40% of the zinc oxide microparticles mixed solution and add the bean dregs mixed solution obtained in the step (1) , Sealed and stirred at room temperature for 24h. The impregnated sample was dried in an electric blast drying oven at 1...

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Abstract

The invention discloses a short-chain quaternary amine nitrogen modified mesoporous biochar and its preparation method and application. The preparation method of the short-chain quaternary amine nitrogen modified mesoporous biochar comprises the following steps: making a biomass material Mesoporous biochar: mix mesoporous biochar with anhydrous betaine solution for reaction, wash and dry to obtain short-chain quaternary ammonium nitrogen modified mesoporous biochar. The short-chain quaternary amine nitrogen modified mesoporous biochar prepared by the present invention has the advantages of good adsorption performance and good electrochemical performance, and is a new type of electro-adsorption material, which can be used for electro-adsorption of inorganic salt pollutants in water bodies (such as perchlorate), showing the characteristics of high efficiency, low cost, recyclable utilization and no secondary pollution, has very high use value and very good application prospect. At the same time, the preparation method of the present invention has the advantages of simple process, mild preparation conditions, low cost, etc., is suitable for large-scale preparation, and is convenient for industrial application.

Description

technical field [0001] The invention relates to a short-chain quaternary amine nitrogen modified mesoporous biochar, a preparation method and application thereof. Background technique [0002] In recent years, perchlorate as an oxidizing agent has been widely used in rocket propellants, missile fuels, explosives, pyrotechnics, automotive airbags, batteries and other industrial products. As a result, more and more perchlorate is being released into the environment. Because perchlorate is highly water-soluble, diffusible, prone to bioaccumulation and difficult to capture and degrade, it leads to widespread pollution spread. In addition, the presence of perchlorate is also detected in drinking water, and perchlorate directly interferes with the growth and metabolism of organisms, especially endangering the health of pregnant women and infants. At present, the environmental problems caused by perchlorate have attracted great attention. [0003] In recent years, the adsorption...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30B01J20/32C02F1/469C02F101/12
CPCB01J20/20B01J20/28066B01J20/28083B01J20/3078B01J20/3085B01J20/3064B01J20/3071B01J20/3236C02F1/46109C02F1/4691B01J2220/4887C02F2001/46133C02F2101/12C02F2201/46135
Inventor 翟云波王蓓朱云
Owner 欣创环保科技(苏州)有限公司
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