A kind of preparation method of uranium ion capture agent

Abstract

The invention discloses a preparation method of a uranium ion trapping agent, comprising: (1) dissolving ferric sulfate and ferrous sulfate in water, sealing and stirring to obtain an iron-based solution; dissolving sodium hydroxide and sodium thioglycolate in In water, sealed and stirred to obtain an alkaline mercapto solution; the iron-based solution and the alkaline mercapto solution were mixed, sealed and stirred, separated, filtered, dried, and ground to obtain a mercapto-doped patina powder; (2) the mercapto-doped patina powder was obtained; The patina powder is placed in a low-temperature plasma instrument for glow discharge treatment to obtain the mercapto-doped patina powder after the plasma treatment; (3) the mercapto-doped patina powder after the plasma treatment is added into an aqueous solution containing a chelating agent The test tube is sealed to carry out grafting reaction to obtain a chelating agent-strengthened mercapto-doped patina mixture, which is separated, filtered, dried and ground to obtain a uranium ion capture agent. The invention can not only realize the rapid removal of uranium ions in the uranium-containing waste liquid, but also stabilize the adsorbed uranium ions inside the particles.

Description

technical field [0001] The invention relates to the treatment of uranium-containing waste liquid, in particular to a preparation method of a uranium ion capture agent. Background technique [0002] Uranium pollutants are radioactive and highly toxic. Once they are released into the ecological environment in large quantities, they will cause irreversible damage to the ecological environment. Uranium-containing waste liquid is an important component in the process of nuclear waste generation, with a large amount of waste and high uranium content. The reduction and harmless disposal of uranium-containing waste liquid is an urgent problem in the field of nuclear production. The key to solving the above problems is to capture uranium in the waste liquid and subsequently recover it as a resource. [0003] Although a variety of materials have been used to purify uranium-containing waste liquids, including layered inorganic materials, engineered proteins, chelating resins, polymer...

AI Technical Summary

Problems solved by technology

[0003] Although a variety of materials have been used to purify uranium-containing waste liquids, including layered inorganic materials, engineered proteins, chelating resins, polymer adsorption materials, metal organic framework materials, etc., these materials have low adsorption capacity to varying degrees. , high environmental sensitivity, difficulty in recycling and disposal, etc.

At the same time, problems such as complex material preparation process, low recovery efficiency of adsorbed uranium, and complex recovery process are also unavoidable important factors restricting the industrialization and commercialization of the above materials.

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