A method for the preparation, separation and enrichment of uranium of a bifunctional polymer chelate resin

Abstract

The invention discloses a method for preparing, separating and enriching uranium with a bifunctional polymer chelating resin, which is characterized in that 1-5 g of hydrogen phosphate di(methacryloyloxyethyl) ester, 1-5 g Add polyvinylamine and 0.02-0.08 g of azobisisobutyronitrile into 1-10 mL of organic solvent, stir at 25°C for 1-3 h, add the above solution to a hydrothermal reaction kettle, and react at 100°C for 24 h, take it out, open the kettle, remove the organic solvent by rotary evaporation, and dry in vacuum at 45°C for 12-24 h to obtain a bifunctional polymer chelating resin. The preparation route of the bifunctional polymer chelating resin synthesized by the invention is simple and easy to operate. At the same time, the adsorbent obtained by the invention has the advantages of strong adsorption capacity, large adsorption capacity and fast adsorption speed when separating and enriching uranium, is easy to separate from aqueous solution, and can effectively absorb and recover uranyl ions in aqueous solution.

Description

A kind of bifunctional polymer chelating resin preparation and separation and enrichment method of uranium Field of invention: The present invention relates to a kind of preparation of bifunctional polymer chelating resin and separation and enrichment to uranium. Background technology: Uranium is an important nuclear fuel resource. In the process of nuclear fuel cycle, from uranium mining, beneficiation and refining, to nuclear Uranium is contained in wastewater from the manufacture of fuel components and from the operation of reactors. In addition, the reprocessing of spent fuel will also A large amount of secondary wastewater containing uranium is produced. Uranium-containing wastewater is a type of persistent radioactive (U-238 has a half-life of 4.5 billion years) If uranium accumulates in large amounts in the environment, as a heavy metal with both chemical toxicity and radiotoxicity, it will cause environmental damage. Bottom radiation, causing genetic aberra...

AI Technical Summary

Problems solved by technology

[0006] Nevertheless, the prior art still has deficiencies in preparation methods, adsorption, selectivity, etc.