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Heavy metal and radioactive metal ion adsorption material and preparation method thereof

An adsorption material and metal ion technology, which is applied in the direction of radioactive purification, radioactive pollutants, chemical instruments and methods, etc., can solve the problems of long preparation time, difficult recovery of calixarene, and many by-products, so as to improve the adsorption efficiency and avoid secondary pollution. The effects of secondary pollution and by-products

Pending Publication Date: 2022-01-04
HUBEI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these composite methods all use traditional chemical methods, and the composite materials obtained have poor radiation stability and are easily decomposed in nuclear wastewater, making calixarene detach from the carrier, resulting in the problem that calixarene is difficult to

Method used

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  • Heavy metal and radioactive metal ion adsorption material and preparation method thereof
  • Heavy metal and radioactive metal ion adsorption material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Preparation of polyacrylic acid-adsorption carrier material: Dissolve 100 parts of acrylic acid in 300 parts of chloroform according to parts by mass, add 100 parts of diatomaceous earth, stir for 4 hours, put it into a petri dish, and cover with plastic wrap. The samples were subjected to electron beam irradiation experiments. The irradiation dose was 90kGy, and the dose rate was 15kGy / pass to obtain polyacrylic acid-adsorption carrier material.

[0043] Preparation of calixarene-polyacrylic acid dual-functional adsorption material: According to parts by mass, 1.1 parts of the above-mentioned thiocalix[4]arene was dissolved in 30 parts of chloroform to obtain a calixarene solution, and then added to the above-mentioned polyacrylic acid-adsorption carrier material to mix homogeneous, the solid phase was washed with chloroform, and vacuum-dried for 36 hours to obtain a calixarene-polyacrylic acid bifunctional adsorption material.

Embodiment 2

[0045] According to parts by mass, 1.1 parts of thiocalix[4]arene was dissolved in 30 parts of chloroform to obtain a calixarene solution, 100 parts of acrylic acid was dissolved in 300 parts of chloroform to obtain an acrylic acid solution, and the calixarene solution, acrylic acid The solution and 100 parts of diatomaceous earth were mixed and stirred for 4 hours, and then covered with plastic wrap. The samples were subjected to electron beam irradiation experiments. The irradiation dose is 90kGy, and the dose rate is 15kGy / pass. Then the solid phase was washed with chloroform and dried in vacuum for 36 hours to obtain a calixarene-polyacrylic acid bifunctional adsorption material.

Embodiment 3

[0047] This embodiment is basically the same as Embodiment 2, and its difference only lies in:

[0048] Replace thiocalix[4]arene with thiocalix[6]arene.

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Abstract

The invention relates to the technical field of nuclear wastewater treatment, in particular to a heavy metal and radioactive metal ion adsorption material and a preparation method thereof. The preparation method of the heavy metal and radioactive metal ion adsorption material comprises the following steps: taking an acrylic monomer, an adsorption carrier with hydroxyl on the surface and calixarene as raw materials, and carrying out polymerization and crosslinking under electron beam radiation to obtain the calixarene-polyacrylic acid bifunctional adsorption material capable of adsorbing heavy metal and radioactive metal ions. The material prepared in the invention has irradiation stability, so the material can be used for removing heavy metals in environmental wastewater, and can also be used for adsorbing and trapping radioactive metals in nuclear pollution wastewater.

Description

technical field [0001] The invention relates to the technical field of nuclear wastewater treatment, in particular to an adsorption material for heavy metals and radioactive metal ions and a preparation method thereof. The adsorption material can be effectively used for the treatment of nuclear-contaminated wastewater and heavy-metal-contaminated wastewater in the environment. Background technique [0002] With the rapid development of my country's economy, heavy metal pollution including copper, lead, mercury, arsenic, etc. produced by mining, metallurgy, chemical industry, electronics and other industries is becoming more and more serious, and because heavy metals have long toxic effects, are not easy to degrade, and are easy to accumulate in organisms, etc. Characteristics, heavy metal pollution has seriously endangered human health and the environment we depend on for survival. [0003] On the other hand, nuclear energy is clean and efficient, and its widespread use has b...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30C02F1/28G21F9/12C02F101/20
CPCB01J20/264C02F1/285G21F9/12C02F2101/006C02F2101/20
Inventor 汤秀琴胡国文陈志远刘碧
Owner HUBEI UNIV OF SCI & TECH