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Preparation and use of functional polymer micro-balls for separating and determining heavy metal ions

A polymer microsphere, functionalized technology, applied in chemical instruments and methods, material separation, ion exchange, etc., can solve problems such as secondary pollution, and achieve the effect of protecting the environment, high specific surface area, and reducing pollution

Inactive Publication Date: 2003-06-18
JIANGNAN UNIV
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

Improper treatment of heavy metal ions in wastewater can also cause secondary pollution
[0003] The commonly used methods for the treatment of heavy metal ions in wastewater are: (1) chemical precipitation method; (2) adsorption method; (3) air flotation method; (4) redox method; (5) ion exchange method; (6) membrane separation method etc. After reviewing a large number of literature and entrusting novelty searches, there is no report on the treatment of functionalized polymer microspheres for the separation and detection of heavy metal ions at home and abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example example 1

[0027] Put monomer NVA 10g, initiator VA-061 0.6g and chain transfer agent (mercaptoethanol) 2g in a 50ml three-necked flask filled with 30ml of absolute ethanol. Stir and blow nitrogen for 10 min, then raise the temperature to 60°C for 6 h. Then the reaction product was dropped into anhydrous ether and stirred rapidly, there was a white flocculent precipitate, which was collected by filtration and vacuum-dried to obtain NVA oligomer.

[0028]Take 10 g of the obtained NVA oligomer, 1 g of potassium iodide (KI), and 1 g of p-chloromethylstyrene, dissolve them in a flask filled with 20 ml of dimethylformamide (DMF), and stir the reaction at 30° C. for 72 h. Filter off the precipitate, drop the filtrate into anhydrous ether and stir rapidly, and filter to obtain a flocculent precipitate. Dissolve the precipitate with a small amount of absolute ethanol, drop it into anhydrous ether again and stir rapidly, then filter to obtain flocculent precipitate, and dry in vacuum to obtain P...

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Abstract

A functional high-molecular microsphere for detecting heavy metal ions and separating them from sewage is prepared through synthesizing the oligomer from N-vinyl acetylamine (NVA), preparing macro-molecular monomer, graft copolymerizing with styrene to obtain PNVA-g-PS microspheres, hydrolyzing in acid or alkaline solvent, and reacting on p-methyl azocarboxylate.

Description

technical field [0001] A preparation and application method of functionalized polymer microspheres for separating and detecting heavy metal ions. The present invention is to prepare surface functionalized polymer microspheres, which can detect and remove harmful metal ions to achieve harmless treatment and water resource protection , detection and other purposes. The invention relates to the technical field of preparing functional polymer materials, treating and detecting sewage. Background technique [0002] Environmental pollution is one of the problems faced by my country's economic development and social progress. Environmental pollution not only destroys the ecological balance, wastes resources and energy, but also seriously endangers human health and survival, and also hinders the further development of industrial and agricultural production. At present, more attention is paid to the treatment of waste gas and waste water in China. The common harmful heavy metal elem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D15/08B01J20/06B01J20/26B01J20/30C02F1/28C02F1/62C08L9/06G01N30/02
Inventor 陈明清刘晓亚倪忠斌杨成陈瑜李在均
Owner JIANGNAN UNIV
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