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Heavy metal adsorption copolymer with sulfonic acid group and preparation method thereof, and application of heavy metal adsorption copolymer to water treatment

A technology based on heavy metals and sulfonic acid groups, which is applied in the direction of adsorption of water/sewage treatment, water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems such as the decrease in the purity of high molecular polymers, and achieve low preparation costs and good quality. Pore ​​structure, easy handling effect

Inactive Publication Date: 2011-09-21
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, most of the above methods are chemical polymerization methods, and the preparation process often requires the addition of initiators and crosslinking agents, resulting in a decrease in the purity of the prepared polymers.

Method used

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  • Heavy metal adsorption copolymer with sulfonic acid group and preparation method thereof, and application of heavy metal adsorption copolymer to water treatment
  • Heavy metal adsorption copolymer with sulfonic acid group and preparation method thereof, and application of heavy metal adsorption copolymer to water treatment

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Effect test

Embodiment 1

[0026] Monomer solution ratio: the molar ratio of AMPS to NVF is 1:4, and the ratio of water to the total volume of AMPS and NVF is 7:3;

[0027] Radiation polymerization process: It can be directly added by adding refrigerant, for example, controlled at -78°C temperature, using 60 Co-γ high-energy rays, the radiation dose range is controlled at 1×10 4 Gy.

[0028] The product was analyzed by scanning electron microscope, as figure 1 It can be seen from the figure that the product has a good pore structure, and it can be continuously stirred for more than 2 months without being destroyed under the condition of 250-500 rpm. The same result can be obtained using electron beam (MeV) radiation produced by an electron linac.

Embodiment 2

[0031] Monomer solution ratio: the molar ratio of AMPS to NVF is 2:3, and the ratio of water to the total volume of AMPS and NVF is 7:2;

[0032] Radiation polymerization process: at a temperature of -78°C, using 137 Cs-γ high-energy rays, the radiation dose range is controlled at 1×10 5 Gy.

[0033] Copolymer dry product to Cr 3+ 、Cd 2+ 、Cu 2+ , Pb 2+ The adsorption capacity of four kinds of metal ions are respectively: 198mg / g, 156mg / g, 135mg / g, 210mg / g.

Embodiment 3

[0035] Monomer solution ratio: the molar ratio of AMPS to NVF is 1:9, and the ratio of water to the total volume of AMPS and NVF is 7:3;

[0036] Radiation polymerization process: at a temperature of -95°C, using 60 Co-γ high-energy rays, the radiation dose range is controlled at 1×10 6 Gy.

[0037] Copolymer dry product to Cr 3+ 、Cd 2+ 、Cu 2+ , Pb 2+ The adsorption capacity of four kinds of metal ions are respectively: 142mg / g, 132mg / g, 122mg / g, 198mg / g.

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Abstract

The invention relates to heavy metal adsorption copolymer with a sulfonic acid group and a preparation method and application thereof. The preparation method is simple, and easy to operate; and the copolymer can effectively adsorb Cr<3+>, Cd<2+>, Cu<2+> and Pb<2+> ions when used for water treatment. The preparation method of the heavy metal adsorption copolymer with the sulfonic acid group comprises the following step of: performing radiation polymerization on 2-acrylamide-2-methylpropanesulfonic acid (AMPS for short) and N-vinylformamide (NVF for short) in a molar ratio of 1:1-1:9 by using high-energy rays, wherein the radiation dose of the radiation polymerization is 1*10<3> to 1*10<6>Gy, and the polymerization temperature is between -63 and -95 DEG C. The copolymer has a good pore structure, can effectively adsorb and chelate heavy metal ions, and has certain mechanical strength and long service life.

Description

technical field [0001] The invention relates to a heavy metal adsorption copolymer with sulfonic acid group, its preparation method and its application in water treatment. Background technique [0002] Heavy metal pollution refers to pollution caused by heavy metals or their compounds, mainly water pollution. Most industrial production, such as electroplating, metallurgical metal processing, mining, machinery manufacturing, etc., will produce a large amount of industrial wastewater containing heavy metals and heavy metal ions, and the heavy metal ions in industrial wastewater and drinking water are not easy to be biodegraded and will be rich in organisms. collection, and human beings are the final consumers of living organisms, so the enrichment of heavy metals in the human body is higher and the harm to human beings is greater. In addition, heavy metals and heavy metal ions are extremely harmful to aquatic organisms, plants and the environment. Therefore, the prevention a...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F1/62
Inventor 李正魁吴宁梅赵琳周涛
Owner NANJING UNIV
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