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Metal ion carbonized adsorption material and preparation method thereof

A technology of adsorption materials and metal ions, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problem that polyethyleneimine cannot be recycled, and achieve high adsorption rate and good removal rate.

Active Publication Date: 2014-02-19
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention aims to solve the problem that polyethyleneimine cannot be recycled when treating heavy metal wastewater, and provides a metal ion carbonized adsorption material and its preparation method

Method used

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  • Metal ion carbonized adsorption material and preparation method thereof
  • Metal ion carbonized adsorption material and preparation method thereof
  • Metal ion carbonized adsorption material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A preparation method of metal ion carbonization adsorption material, the steps are:

[0041] (1) Take 20g of 50% polyethyleneimine monomer solution, continue stirring to fully swell the system, add 12g of 50% epichlorohydrin ethanol solution dropwise at 30 °C, and adjust the system with 0.1mol / l sodium hydroxide solution The pH value reached 8, and the reaction was stirred for 1 h until the product became gelatinous, left standing for 3 h, suction filtered, the product was washed several times with ethanol, then repeatedly washed with distilled water, and vacuum dried to obtain the cross-linked modified polymer. Ethyleneimine;

[0042] (2) Take 5g of cross-linked modified polyethyleneimine and put it in the reaction kettle, put the reaction kettle in a closed carbonization furnace, and under nitrogen protection, the temperature is raised to 200 °C at a heating rate of 3 °C / min, and the temperature is kept constant for 2 hours. After natural cooling, take out, repeatedl...

Embodiment 2

[0048] A preparation method of metal ion carbonization adsorption material, the steps are:

[0049] (1) Take 20g of 40% polyethyleneimine monomer solution, keep stirring to fully swell the system, add 10g of 60% epichlorohydrin ethanol solution dropwise at 35°C, and adjust the system with 0.1mol / l sodium hydroxide solution The pH value of the product was reached to 7.5, and the reaction was stirred for 1.5h until the product became gelatinous, left standing for 2h, and suction filtered. The product was washed several times with ethanol, then repeatedly washed with distilled water, and vacuum-dried to obtain the cross-linking modification. Polyethyleneimine;

[0050] (2) Take 5g of cross-linked modified polyethyleneimine and put it in the reaction kettle, put the reaction kettle in a closed carbonization furnace, and under nitrogen protection, the temperature is raised to 300 °C at a heating rate of 4 °C / min, and the temperature is kept constant for 3 hours. After natural cool...

Embodiment 3

[0054] A preparation method of metal ion carbonization adsorption material, the steps are:

[0055] (1) Take 20g of 60% polyethyleneimine monomer solution, keep stirring to fully swell the system, add 11g of 40% epichlorohydrin ethanol solution dropwise at 40°C, and adjust the system with 0.1mol / l sodium hydroxide solution The pH value of the product was reached to 7, and the reaction was stirred for 2h until all the products became gelatinous, left standing for 2.5h, and suction filtered. The product was washed several times with ethanol, then repeatedly washed with distilled water, and dried in vacuum to obtain the cross-linking modification. Polyethyleneimine;

[0056] (2) Take 5g of cross-linked modified polyethyleneimine and put it in the reaction kettle, put the reaction kettle in a closed carbonization furnace, and under nitrogen protection, the temperature is raised to 250 °C at a heating rate of 5 °C / min, and the constant temperature is 2.5 hours. Take out after natu...

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Abstract

The invention discloses a metal ion carbonized adsorption material and a preparation method thereof, belongs to the technical field of functional adsorption materials and solves the problem that polymine can not be reclaimed while being used for treating heavy metal wastewater. The metal ion carbonized adsorption material is prepared by crosslinking polymine with epichlorohydrin to modify polymine, and carbonizing, wherein the mass ratio of polymine to epichlorohydrin is 1: (0.5 to 0.6). The metal ion carbonized adsorption material provided by the invention is an adsorbent containing an active amino functional group and possessing a portion of properties of carbon materials, so that the metal ion carbonized adsorption material has a higher adsorption rate to metal ions and a higher removal rate, and can be reutilized.

Description

Technical field [0001] The present invention is a technology field of functional carbonization adsorption materials, which specifically involves a carbonized adsorption material and preparation methods that are mainly used to absorb metal ions in wastewater. Background technique [0002] Water body weight metal ion pollution refers to the pollution caused by pollutants containing heavy metal ions into the water body. It is one of the most serious pollution to water pollution and the greatest pollution to humans.Heavy metal wastewater produced in the production process of instrumentation and other industries generally contain heavy metal ions such as chromium, cadmium, copper, mercury, nickel, and zinc. [0003] The heavy metal ions entering the environment or ecosystem are mainly existing in the form of compounds, and will not be degraded by naturally. Through the retention, accumulation and migration of creatures, it will slowly enrich the enrichment and cause serious harm.And m...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30C02F1/28
Inventor 高建峰陈曦胡拖平安富强周文霞平伟光
Owner ZHONGBEI UNIV
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