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Ternary metal oxide material for treating radionuclides in wastewater and its application

A radionuclide and ternary metal technology, applied in the field of radioactive material processing, to achieve the effects of low production cost, abundant surface active sites, and simple preparation process

Inactive Publication Date: 2020-09-29
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the commonly used multi-element oxide materials are binary metal oxides, and now they are mostly used in the adsorption treatment of heavy metals, and are rarely used in the adsorption treatment of radionuclides.

Method used

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  • Ternary metal oxide material for treating radionuclides in wastewater and its application
  • Ternary metal oxide material for treating radionuclides in wastewater and its application
  • Ternary metal oxide material for treating radionuclides in wastewater and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: Preparation of Co-Mo-Ni ternary metal oxide material

[0030] (1) Dissolve 6mmol cobalt nitrate, 3mmol nickel nitrate, 1mmol ammonium molybdate, 12mmol urea and 2mmol ammonium fluoride in 40mL deionized water, then stir at room temperature for 1h to obtain a homogeneous solution;

[0031] (2) The obtained homogeneous solution was transferred to a 50mL autoclave, heated in an oven at 130°C for 5h, then cooled to room temperature, centrifuged, and washed alternately with a large amount of deionized water and absolute ethanol;

[0032] (3) The obtained sample was placed in a freeze-drying oven at -40° C. for 12 hours to obtain a Co-Mo-Ni ternary metal oxide material.

Embodiment 2

[0033] Example 2: Take the Co-Mo-Ni ternary metal oxide material prepared in Example 1 and adsorb it at 25°C 238 U solution

[0034] (1) Take 50mg / L Co-Mo-Ni ternary metal oxide material, add 40mg / L, pH=5 uranyl nitrate solution, and place it in a constant temperature oscillator at 25°C;

[0035] (2) Sampling and measuring the supernatant at 0.5 / 1 / 2 / 3 / 4 / 5 / 6 / 8 / 10 / 12h respectively 238U concentration;

[0036] (3) According to the solution 238 Initial concentration of U C 0 and in solution after adsorption 238 The concentration Ce of U is calculated to obtain the adsorption amount;

[0037] (4) Draw the graph of adsorption time and adsorption amount, and the results are shown in Table 1.

Embodiment 3

[0038] Example 3: Take the Co-Mo-Ni ternary metal oxide material prepared in Example 1 and adsorb it at 35°C 238 U solution

[0039] (1) Take 50mg / L Co-Mo-Ni ternary metal oxide material, add 40mg / L, pH=5 uranyl nitrate solution, and place it in a constant temperature oscillator at 35°C;

[0040] (2) Sampling and measuring the supernatant at 0.5 / 1 / 2 / 3 / 4 / 5 / 6 / 8 / 10 / 12h respectively 238 U concentration;

[0041] (3) According to the solution 238 Initial concentration of U C 0 and in solution after adsorption 238 The concentration Ce of U is calculated to obtain the adsorption amount;

[0042] (4) Draw the graph of adsorption time and adsorption amount, and the results are shown in Table 1.

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Abstract

The invention discloses a ternary metal oxide material for treating radionuclide in wastewater and the application of the ternary metal oxide material, and belongs to the technical field of radioactive substance treatment. The Co-Mo-Ni ternary metal oxide material is prepared through a one-step hydrothermal synthesis method; by use of a large surface area, rich surface active sites, high environmental stability and excellent physical and chemical properties of the material, the radionuclide is separated from the wastewater. The novel material achieves a balance in removal of typical radionuclide 238U, 152+154Eu, 89Sr and 137Cs within 1 h, and the maximum adsorption quantities are respectively up to 517.48, 448.21, 259.73 and 186.58 mg / g. The preparation method is simple and feasible; the removal rate for the radionuclide is high, and the adsorption capacity is high; furthermore, the reaction process does not cause secondary pollution. The novel material has a good application prospectin treatment of the radionuclide in the wastewater in China.

Description

technical field [0001] The invention belongs to the technical field of radioactive substance treatment, and in particular relates to the preparation of a ternary metal oxide material and the effect of the material on key radionuclides ( 238 U 152+154 Eu, 89 Sr and 137 Cs) adsorption treatment. It is suitable for the treatment of radioactive wastewater of typical radionuclides released during nuclear accidents, nuclear energy utilization, spent fuel reprocessing, and storage of high-level radioactive nuclear waste. Background technique [0002] With the continuous improvement of the scale of nuclear power development, nuclear energy will occupy an increasingly important position in my country's energy consumption structure, but at the same time, the problem of radioactive pollution has become increasingly prominent. The main ways for radionuclides to enter the environment mainly include: (1) improper disposal of waste ore and waste water generated during the process of ur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/06C02F1/28G21F9/12
CPCB01J20/06C02F1/281G21F9/12
Inventor 于淑君王祥学吴忆涵庞宏伟王祥科
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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