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Phosphate-based high-efficiency uranium adsorbent as well as preparation method and application thereof

A phosphate-based and adsorbent technology, applied in the field of polymer materials, can solve the problems of complex operation, low adsorption capacity, and restrict the development of phosphoric acid-functionalized uranium-absorbing materials, and achieve high uranium adsorption performance, high production efficiency, and improved product quality. The effect of competitiveness

Inactive Publication Date: 2019-03-19
XIAMEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] It can be seen from the above patents and literatures that using phosphoric acid groups as ligands, silica or polymers as substrates, the operation is relatively complicated and the adsorption capacity is low. These problems limit the development of phosphoric acid functionalized uranium absorbing materials.

Method used

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  • Phosphate-based high-efficiency uranium adsorbent as well as preparation method and application thereof
  • Phosphate-based high-efficiency uranium adsorbent as well as preparation method and application thereof
  • Phosphate-based high-efficiency uranium adsorbent as well as preparation method and application thereof

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Embodiment 1

[0026] Preparation of reagents required for the experiment of embodiment 1

[0027] 2g / L uranium standard stock solution

[0028] Accurately weigh 2.11g of uranyl nitrate into a 100mL beaker, add 70mL of deionized water, stir continuously with a glass rod until completely dissolved; cool to room temperature, drain the solution into a 1000mL volumetric flask with a glass rod, and use deionized water Wash the beaker repeatedly for 3 to 4 times, and transfer the washing liquid into the volumetric flask; add deionized water to the washing bottle to a distance of 1 to 2 cm from the scale line, and then use a plastic dropper to add deionized water again until the uranium solution reaches the concave point. The lowest point of the liquid level is equal to the scale line of the volumetric flask, oscillate, shake well, bottle and label; obtain 2g / L uranium standard stock solution, store it in a brown bottle, and store it for later use.

Embodiment 2

[0029] Adsorption performance of embodiment 2 adsorbent

[0030] 1. The effect of solution pH on the adsorption performance of adsorbent

[0031] The present invention explores the adsorption of uranium ions by materials under the condition of pH (1-8). A certain amount of uranium with a concentration of 2 g / L is placed in a beaker, and then the pH of the solution is adjusted to 1.0, 2.0, 3.0, or 3.0 with nitric acid / sodium hydroxide. 4.0, 5.0, 6.0, 7.0, 8.0, and the volume of the solution in the beaker is 10ml, and the concentration is 800mg / L. Then add 10 mg of adsorbent to the above solution, and stir at 25°C for 12 hours; then filter the solution through a micron-sized water phase filter head, and then filter the UO in the solution 2 2+ The remaining concentration of C e .

[0032] From figure 1 (m 吸附剂 = 10 mg, V 铀溶液 =10mL, T=25°C, C o =800mg / L, t=12h), it can be seen that the initial pH of the solution has a significant impact on the adsorption of uranium by the m...

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Abstract

The invention discloses a phosphate-based high-efficiency uranium adsorbent as well as a preparation method and application thereof and relates to a polymer material prepared by taking (methacryloxy ethyl) dihydrophosphate as a raw material. The phosphate-based high-efficiency uranium adsorbent comprises the following raw materials in parts by mass: 1 part of a backing material, 0.01-0.05 part ofan initiator, 30-100 parts of a solvent and 30-100 parts of a cleaning agent. The preparation method comprises the following steps: weighing various components according to the dosage of each component in the raw material formula; sequentially adding the various components in the raw material formula into N,N-dimethyl formamide, uniformly stirring, raising the temperature and polymerizing; cleaning the product after temperature raising and polymerizing with methanol, extracting with tetrahydrofuran, and drying, thereby obtaining the phosphate-based high-efficiency uranium adsorbent. The phosphate-based high-efficiency uranium adsorbent can be applied to dyestuff treatment. The reaction conditions are mild, the cost is low, the equipment investment can be greatly reduced, the process technology difficulty is reduced, and the product competitiveness is improved.

Description

technical field [0001] The present invention relates to a kind of polymer material prepared by hydrogen phosphate bis(methacryloyloxyethyl) ester as raw material, especially relates to using azobisisobutyronitrile as initiator to initiate radical polymerization reaction to obtain phosphate group polymerization A phosphate-based high-efficiency uranium adsorbent of biomaterials and its preparation method and application. Background technique [0002] It is estimated that the total reserves of uranium in seawater have reached more than 4 billion tons, which is about 1000 times that of land uranium reserves, and has very considerable utilization value. The uranium element in seawater mainly exists in the form of uranyl carbonate. To extract uranium from seawater by adsorption, it is necessary to develop efficient adsorption materials. In order to achieve this goal, researchers have prepared and tried a variety of adsorbent materials from multiple perspectives. According to t...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F101/30
CPCB01J20/262C02F1/285C02F2101/006C02F2101/308
Inventor 李磊檀东贵狄托
Owner XIAMEN UNIV
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