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Ion sieve for uranium extraction in water and preparation method thereof

A technology of ion sieve and water body, applied in chemical instruments and methods, other chemical processes, nuclear engineering, etc., can solve the problems of low efficiency, long time of biological treatment, poor selectivity, etc.

Inactive Publication Date: 2016-04-27
INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the ion exchange method has poor selectivity, low adsorption capacity, easy poisoning and high cost, the biological method has a long treatment time and low efficiency, and the co-precipitation method requires complex post-treatment processes such as evaporation concentration, ion exchange, and reverse osmosis. Increased the difficulty and cost of its industrialization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. Prepare a 1.5mol / L potassium pyrophosphate solution and place it in a beaker. Prepare a 1.0mol / L sodium molybdate solution, slowly add it dropwise into the potassium pyrophosphate solution with a separatory funnel according to a certain proportion, and keep magnetically stirring. After the sodium molybdate solution is added dropwise, the pH value is adjusted to 2 with 1.5 mol / L hydrochloric acid.

[0031] 2. Prepare a 1.0mol / L zirconium oxychloride solution, slowly add the zirconium oxychloride solution dropwise into the reaction solution with a separatory funnel, and at the same time keep magnetically stirring until the precipitation is no longer formed and the reaction is complete.

[0032] 3. Aging the reaction solution for 12 hours, using a centrifuge (3000r / min, 15min) to separate the solid from the liquid, and washing the solid with distilled water until it becomes neutral. The precipitate was dried in an oven at 60°C for 24 hours, and the solid was ground thr...

Embodiment 2

[0037] 1. Prepare a 1.5mol / L sodium pyrophosphate solution and place it in a beaker. Prepare a 1.0 mol / L potassium molybdate solution, slowly add it dropwise into the sodium pyrophosphate solution with a separatory funnel according to a certain proportion, and keep magnetically stirring. After the sodium molybdate solution is added dropwise, the pH value is adjusted to 2 with 1.5 mol / L hydrochloric acid.

[0038] 2. Prepare a 1.0mol / L zirconium oxychloride solution, slowly add the zirconium oxychloride solution dropwise into the reaction solution with a separatory funnel, and at the same time keep magnetically stirring until the precipitation is no longer formed and the reaction is complete.

[0039] 3. Aging the reaction solution for 12 hours, using a centrifuge (3000r / min, 15min) to separate the solid from the liquid, and washing the solid with distilled water until it becomes neutral. The precipitate was dried in an oven at 60°C for 24 hours, and the solid was ground throu...

Embodiment 3

[0044] 1. Prepare a 1.5mol / L sodium pyrophosphate solution and place it in a beaker. Prepare a 1.0mol / L sodium molybdate solution, slowly add it dropwise into the sodium pyrophosphate solution with a separatory funnel according to a certain proportion, and keep magnetically stirring. After the sodium molybdate solution is added dropwise, the pH value is adjusted to 2 with 1.5 mol / L hydrochloric acid.

[0045] 2. Prepare a 1.0mol / L zirconium oxychloride solution, slowly add the zirconium oxychloride solution dropwise into the reaction solution with a separatory funnel, and at the same time keep magnetically stirring until the precipitation is no longer formed and the reaction is complete.

[0046] 3. Aging the reaction solution for 12 hours, using a centrifuge (3000r / min, 15min) to separate the solid from the liquid, and washing the solid with distilled water until it becomes neutral. The precipitate was dried in an oven at 60°C for 24 hours, and the solid was ground through an ...

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PUM

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Abstract

The invention provides an ion sieve for extracting uranium from a water body and a preparation method thereof. The ion sieve is prepared from pyrophosphate, molybdate, zirconium oxychloride, hexadecyl trimethyl ammonium bromide, acrylonitrile, and hydroxylamine hydrochloride. The preparation method comprises the steps: preparing a hydrogen ion exchanger of zirconyl-molybdopyrophosphate polyoxometalate by using zirconium oxychloride, the molybdate and the pyrophosphate, introducing a defined amount of uranium ions to the hydrogen ion exchanger, extracting through immobilizing the uranium ions, and baking for forming; then radiating and activating, making a product obtained by radiating and activating react with hexadecyl trimethyl ammonium bromide for performing organic modification, and then adding acrylonitrile and hydroxylamine hydrochloride for performing amine oximation; finally, performing solid-liquid separation, and then performing steps of high-temperature sintering, cooling and grinding, and the like to obtain the ion sieve for extracting uranium from the water body. The prepared ion sieve has a most suitable crystal structure of receiving the uranium ions, shows an efficient selective effect, and has a chelation function and a good selectivity to the uranium ions.

Description

technical field [0001] The invention relates to the technical field of uranium-containing wastewater treatment, in particular to an ion sieve used for extracting uranium from water bodies and a preparation method thereof. Background technique [0002] The International Energy Agency predicts that the world's energy demand will increase by 65% ​​by 2020. At that time, the world's energy supply will be seriously insufficient, and traditional energy cannot meet human needs. Nuclear energy will play an important role in making up for the energy gap. With the development of the world's nuclear energy industry, the treatment of uranium-containing wastewater has become a difficult problem faced by countries all over the world. Uranium mining, nuclear power plant operation, decommissioning of nuclear facilities, and production of nuclear components will produce a large amount of uranium-containing wastewater. Therefore, it has important application value and strategic significance t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/30G21F9/12
Inventor 陈柏桦罗阳明姜涛胡胜王宁田杰程冲杨楚汀熊洁
Owner INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF