Method for preparing uranium ion trapping agent

Abstract

The invention discloses a method for preparing a uranium ion trapping agent. The method comprises the following steps: (1) dissolving ferric sulfate and ferrous sulfate into water, sealing and stirring to obtain an iron-based solution; dissolving sodium hydroxide and sodium thioglycolate into water, sealing and stirring to obtain a basic thiol solution; mixing the iron-based solution and the basicthiol solution, sealing and stirring, separating, filtering, drying and grinding to obtain thiol green-rust doped powder; (2) adding the thiol green-rust doped powder into a low temperature plasma apparatus to perform glow discharge treatment so as to obtain thiol green-rust doped powder subjected to plasma treatment; and (3) adding the thiol green-rust doped powder subjected to plasma treatmentinto a test tube filled with a chelating agent solution, sealing and carrying out a grafting reaction to obtain a chelating agent enhanced thiol green-rust doped mixture, separating, filtering, dryingand grinding, thereby obtaining the uranium ion trapping agent. According to the method disclosed by the invention, uranium ions in uranium-containing waste liquor can be rapidly removed, and the adsorbed uranium ions can be stabilized inside 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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