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Preparation method of modified active carbon

A technology of activated carbon and modification, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problems of low adsorption capacity, poor adsorption effect of high-concentration heavy metals, etc., and achieve good adsorption effect

Active Publication Date: 2016-01-13
江苏富汇通环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, one of the methods for removing the above heavy metal ions is through activated carbon adsorption, but the activated carbon currently used has a low adsorption capacity for the above heavy metal ions, and the adsorption effect for high-concentration heavy metals is poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation method of modified activated carbon, comprising the following steps:

[0022] Step 1, adding 500 g of activated carbon to a mixture of 100 g of ethylene glycol dimethacrylate and 50 g of boron trichloride trimethylamine complex, heating and reacting, the heating temperature is 70 ° C, and the reaction time is 40 minutes to form product one ;

[0023] Step 2: Take 500 g of product one and add it to 1500 g of oxalic acid, raise the temperature to 50° C. under a vacuum condition of 0.005 MPa, keep at constant temperature for 60 minutes, and filter to obtain product two;

[0024] Step 3: Take 500 g of the product 2 and react with 50 g of benzyltriethylammonium chloride at a reaction temperature of 60° C. and a reaction time of 20 minutes to obtain modified activated carbon.

Embodiment 2

[0026] A preparation method of modified activated carbon, comprising the following steps:

[0027] Step 1: Add 500 g of activated carbon to a mixture of 150 g of ethylene glycol dimethacrylate and 50 g of boron trichloride trimethylamine complex, heat the reaction, the heating temperature is 73 ° C, and the reaction time is 45 minutes to form the product one ;

[0028] Step 2: Take 500 g of product one and add it to 2000 g of oxalic acid, raise the temperature to 55° C. under a vacuum condition of 0.006 MPa, keep at constant temperature for 70 minutes, and filter to obtain product two;

[0029] Step 3: Take 500 g of product two and react with 70 g of benzyltriethylammonium chloride at a reaction temperature of 65° C. and a reaction time of 26 minutes to obtain modified activated carbon.

Embodiment 3

[0031] A preparation method of modified activated carbon, comprising the following steps:

[0032] Step 1: Add 1,000 g of activated carbon to a mixture of 300 g of ethylene glycol dimethacrylate and 100 g of boron trichloride trimethylamine complex, heat the reaction, the heating temperature is 78 ° C, and the reaction time is 50 minutes to form a product ;

[0033] Step 2: Take 1,000 g of product one and add it to 4,000 g of oxalic acid, raise the temperature to 56° C. under a vacuum condition of 0.008 MPa, keep at constant temperature for 80 minutes, and filter to obtain product two;

[0034] Step 3: Take 1000 g of product two and react with 200 g of benzyltriethylammonium chloride at a reaction temperature of 65° C. and a reaction time of 30 minutes to obtain modified activated carbon.

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Abstract

The invention discloses a preparation method of modified active carbon. The preparation method comprises the following steps: at first, adding active carbon into a mixture of ethylene glycol dimethacrylate and a boron trichloride-trimethyl amine complex, heating to carry out reactions so as to obtain a product (A), then adding the product (A) into oxalic acid, heating to a temperature of 50 to 60 DEG C under a vacuum condition, maintaining the temperature for 60 to 100 minutes, filtering to obtain a product (B); and finally reacting the product (B) with benzyl triethyl ammonium chloride to obtain the modified active carbon. The technology of the provided preparation method is simple, and the prepared modified active carbon has a good performance on adsorbing heavy metal ions.

Description

technical field [0001] The invention belongs to the technical field of activated carbon preparation, and in particular relates to a preparation method of modified activated carbon. Background technique [0002] With the rapid development of industry and agriculture, chemical products are increasing rapidly, and more and more harmful substances enter the water environment through various channels, causing serious pollution to water bodies. On the one hand, it harms the aquatic ecosystem and produces various harmful effects on aquatic organisms; on the other hand, it directly or indirectly affects human health through drinking water, skin contact, and food chains. During the discharge of industrial wastewater, a considerable amount of heavy metal elements are deposited in natural water bodies. Among these heavy metal pollutants, cadmium, chromium, and lead are the most toxic. [0003] Cadmium is not an essential trace element for the human body. There is almost no cadmium in...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30C02F1/28
Inventor 潘龙
Owner 江苏富汇通环保科技有限公司
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