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

An oxygen functional group, chelating resin technology, applied in chemical instruments and methods, water/sludge/sewage treatment, water pollutants, etc. The operation is time-consuming and troublesome, and the effect of fast adsorption, strong selectivity and low cost is achieved.

Inactive Publication Date: 2016-06-22
EAST CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it must be pointed out that there are also some disadvantages when using solvent extraction to separate and enrich uranium, such as time-consuming and troublesome operation, high production cost; many organic solvents are used, and the energy consumption of solvent recovery and solution concentration is large.
These disadvantages largely limit the further large-scale industrial application of solvent extraction technology in the separation and enrichment of uranium.

Method used

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

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Mesoporous chelating resins containing phosphorus and oxygen functional groups can be prepared by solvothermal method. As a typical synthetic example: 1.5g of divinylbenzene (purity: 55%), 1.5g of vinylphosphonic acid and 0.05g of azobisisobutyronitrile were added to 5mL of ethyl acetate solvent, stirred at 25°C for 1h , put the above solution into a hydrothermal reaction kettle, react at 100°C for 24h, take it out, open the kettle, remove ethyl acetate by rotary evaporation, and dry it in vacuum at 45°C for 12h to obtain a mesoporous chelating resin containing phosphorus and oxygen functional groups 1.

Embodiment 2

[0032] Mesoporous chelating resins containing phosphorus and oxygen functional groups can be prepared by solvothermal method. As a typical synthesis example: 1.5g of ethylene glycol dimethacrylate, 1.5g of vinylphosphonic acid and 0.05g of azobisisobutyronitrile were added to 5mL of ethyl acetate solvent, stirred at 25°C for 1h, and Add the above solution into a hydrothermal reaction kettle, react at 100°C for 24 hours, take it out, open the kettle, remove ethyl acetate by rotary evaporation, and vacuum dry at 45°C for 12 hours to obtain mesoporous chelating resin 2 containing phosphorus and oxygen functional groups.

Embodiment 3

[0034] Mesoporous chelating resins containing phosphorus and oxygen functional groups can be prepared by solvothermal method. As a typical synthesis example: add 1.5g trimethylolpropane trimethacrylate, 1.5g vinylphosphonic acid and 0.05g azobisisobutyronitrile into 5mL ethyl acetate solvent, stir at 25°C for 1h , put the above solution into a hydrothermal reaction kettle, react at 100°C for 24h, take it out, open the kettle, remove ethyl acetate by rotary evaporation, and dry it in vacuum at 45°C for 12h to obtain a mesoporous chelating resin containing phosphorus and oxygen functional groups 3.

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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...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F101/10
CPCB01J20/267C02F1/285C02F2101/10
Inventor 袁定重张庆华刘妍王云元利刚黎海明林莉余丽程群苏胜利易珍刘武
Owner EAST CHINA UNIV OF TECH
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