Mesoporous chelate resin containing phosphorus-oxygen functional groups and method for separating and enriching uranium

Abstract

The invention relates to mesoporous chelate resin containing phosphorus-oxygen functional groups and a method for separating and enriching uranium. A preparation method of the mesoporous chelate resin includes: adding 1-5g of organic crosslinking agent, 1-5g of unsaturated compound containing the phosphorus-oxygen functional groups and 0.02-0.08g of azodiisobutyronitrile into 1-10mL of organic solvent, stirring under 25 DEG C for 1-3 hours, adding the solution into a hydrothermal reaction kettle, reacting under 100 DEG C for 24 hours, taking out, opening the reaction kettle, performing rotation evaporation to remove the organic solvent, and performing vacuum drying under 45 DEG C for 12-24 hours to obtain the mesoporous chelate resin containing the phosphorus-oxygen functional groups, wherein mass number and volume number are proportionally adjusted. The preparation method is simple in synthesizing path and easy to operate. When the mesoporous chelate resin serving as an absorbent is used to separate and enrich the uranium under high acidity, the mesoporous chelate resin is high in absorption ability, large in absorption quantity, fast in absorption, and the like, and the mesoporous chelate resin can be easily separated from an aqueous solution and can effectively absorb and recycle the uranyl ions in the aqueous solution.

Description

field of invention

[0001] The invention belongs to the technical field of separation and enrichment of uranium. The invention relates to a mesoporous chelating resin containing phosphorus and oxygen functional groups and its application and method as a polymer adsorbent in the separation and enrichment of uranium. Background technique

[0002] Energy is the foundation of national economic development, and the development and utilization of new energy is a major strategic issue related to the overall economic construction of our country. Nuclear power generation has become the protagonist of new energy due to its economy, cleanliness and high efficiency. Due to the rapid development of nuclear power, the demand for uranium has increased sharply. Recovering uranium from the wastewater generated by uranium-related processes can make full use of limited uranium resources and meet the requirements of sustainable development. In addition, the pollution of surface and groundwater...

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