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Synthesis method and application of cobalt-containing polymer uranyl ion adsorbent

A technology of uranyl ion and synthesis method, which is applied in the synthesis of cobalt-containing polymer uranyl ion adsorbent and the application field of removing uranyl ion pollution in wastewater, and can solve the problems of low recycling rate, high synthesis cost, and synthetic process Complicated problems, to achieve the effect of high adsorption, long storage time and simple synthesis

Active Publication Date: 2021-06-08
LANZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the disadvantages of poor adsorption capacity of uranyl ion adsorption materials in the prior art, complex synthesis process, high synthesis cost, and low recycling rate. -7-ene-2,3,5,6-tetracarboxylic dianhydride, cobalt chloride hexahydrate as the basic raw materials, using the solvothermal synthesis method, synthesized a simple synthesis process, high adsorption efficiency, anti-interference ability Strong, recyclable cobalt-containing polymer uranyl ion adsorbent and its application to remove uranyl ions in uranium-containing wastewater

Method used

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  • Synthesis method and application of cobalt-containing polymer uranyl ion adsorbent
  • Synthesis method and application of cobalt-containing polymer uranyl ion adsorbent
  • Synthesis method and application of cobalt-containing polymer uranyl ion adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of synthetic method of cobalt-containing polymer uranyl ion adsorbent is as follows:

[0027] 1. Synthesis of mixed solvents

[0028] Add 50mL N,N-dimethylformamide, 50mL methanol, and 50mL ultrapure water into a round bottom flask, mix and shake well, and store the mixed solution under an argon atmosphere as a solvent for the next reaction;

[0029] 2. Synthesis of tetracarboxylic acid ligand N,N-bis(3,5-dicarboxyphenyl)bicyclo[2.2.2]octene tetracarboxylic acid diimide

[0030] Add 1.82g of 5-aminoisophthalic acid and 1.24g of bicyclo[2.2.2]oct-7-ene-2,3,5,6-tetracarboxylic dicarboxylic acid to a two-necked round-bottomed flask equipped with a reflux condenser Anhydride, seal the interface, protect with argon, inject the above mixed solvent into the flask with a syringe, and reflux at 150 degrees Celsius for 48 hours under stirring conditions. After the reaction, cool the system to room temperature, and pour ultrapure water into the cooled solution , and adjus...

Embodiment 2

[0035] A kind of synthetic method of cobalt-containing polymer uranyl ion adsorbent is as follows:

[0036] 1. Synthesis of mixed solvents

[0037] Add 40mL N,N-dimethylformamide, 40mL methanol, and 40mL ultrapure water into a round bottom flask, mix and shake well, and store the mixed solution under an argon atmosphere as a solvent for the next reaction;

[0038] 2. Synthesis of tetracarboxylic acid ligand N,N-bis(3,5-dicarboxyphenyl)bicyclo[2.2.2]octene tetracarboxylic acid diimide

[0039]Add 2.7g of 5-aminoisophthalic acid and 1.9g of bicyclo[2.2.2]oct-7-ene-2,3,5,6-tetracarboxylic dicarboxylic acid to a two-necked round-bottomed flask equipped with a reflux condenser Anhydride, seal the interface, protect with argon, inject the above mixed solvent into the flask with a syringe, and reflux at 130 degrees Celsius for 36 hours under stirring conditions. After the reaction is completed, cool the system to room temperature, and pour ultrapure water into the cooled solution ,...

Embodiment 3

[0043] A kind of synthetic method of cobalt-containing polymer uranyl ion adsorbent is as follows:

[0044] 1. Synthesis of mixed solvents

[0045] Add 30mL N,N-dimethylformamide, 30mL methanol, and 30mL ultrapure water into a round bottom flask, mix and shake well, and store the mixed solution under an argon atmosphere as a solvent for the next reaction;

[0046] 2. Synthesis of tetracarboxylic acid ligand N,N-bis(3,5-dicarboxyphenyl)bicyclo[2.2.2]octene tetracarboxylic acid diimide

[0047] Add 3.6g of 5-aminoisophthalic acid and 2.5g of bicyclo[2.2.2]oct-7-ene-2,3,5,6-tetracarboxylic acid di Anhydride, seal the interface, protect with argon, inject the above mixed solvent into the flask with a syringe, and reflux at 110 degrees Celsius for 24 hours under stirring conditions. After the reaction is completed, cool the system to room temperature, and pour ultrapure water into the cooled solution , and adjust the pH of the solution to 3.0 with 0.1mol / L hydrochloric acid to ob...

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Abstract

The invention relates to a synthesis method and application of a cobalt-containing polymer uranyl ion adsorbent for adsorbing uranyl ions. The preparation method comprises the following steps: synthesizing a tetracarboxylic acid ligand N, N-bis (3, 5-dicarboxyphenyl) bicyclo [[2.2. 2] octylene tetracarboxylic diimide by using 5-aminoisophthalic acid and bicyclo [2.2. 2] octyl-7-ene-2, 3, 5, 6-tetracarboxylic dianhydride, and dispersing the ligand and cobalt chloride hexahydrate in a mixed solution of N, N-dimethylformamide, methanol and ultrapure water to synthesize the cobalt-containing polymer uranyl ion adsorbent. The cobalt-containing polymer uranyl ion adsorbent for removing uranyl ions has the characteristics of high adsorption efficiency, low cost, reusability and environmental protection, is simple to synthesize, long in storage time, good in specificity, high in adsorption degree and strong in interference resistance, and is a rapid and efficient uranyl ion adsorption method; the adsorbent has a wide application prospect in removing uranyl ions in a wastewater system.

Description

technical field [0001] The invention relates to the technical field of adsorption materials, in particular to a synthesis method of a cobalt-containing polymer uranyl ion adsorbent and its application in removing uranyl ion pollution in wastewater. Background technique [0002] The development of nuclear fuels has accelerated considerably over the past few decades, driven by the growing demand for energy alternatives to fossil fuels. Uranium is an indispensable and important resource for the development of nuclear power fuel in the country. my country's nuclear power technology is constantly developing and improving, and the treatment technology for uranium-containing wastewater is also in urgent need of updating. Therefore, it is very important to develop reliable and efficient methods to treat uranium-containing wastewater. To remove uranyl ions from wastewater solutions, various methods can be employed, such as chemical precipitation, membrane separation, biology, solven...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30G21F9/12
CPCB01J20/0225B01J20/0288B01J20/262G21F9/12
Inventor 孙慧鹏朱钰芳张海霞祝新月
Owner LANZHOU UNIVERSITY
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