High-efficient method of extracting uranyl ions from water

A technology for extracting water by uranyl ions, which is applied in the field of wastewater treatment, can solve undiscussed problems, and achieve the effects of avoiding secondary pollution, improving extraction capacity, and being easy to operate

Active Publication Date: 2015-04-01
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, none of these have explored how to use a green, cost-effective method to improve the selective extraction of uranyl ions in complex water bodies.

Method used

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  • High-efficient method of extracting uranyl ions from water
  • High-efficient method of extracting uranyl ions from water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1) At room temperature, take 10mL of 29.5g / L magnesium chloride solution containing uranyl ions, in which the concentration of uranyl ions is 0.3mg / L, add 0.25g of sodium hydroxide and stir to generate 0.18g of magnesium hydroxide while adsorbing Uranium, forming nano-magnesium hydroxide pre-adsorbed uranyl ions.

Embodiment 2

[0041] 1) At room temperature, take 0.125g of magnesium oxide and put it into 10mL of an aqueous solution containing uranyl ions, wherein the concentration of uranyl ions is 0.3mg / L; after stirring for 30 minutes, the magnesium oxide is hydrated to form 0.18g of nano-sized magnesium hydroxide .

Embodiment 3

[0048] 1) At room temperature, take 0.25g of titanium dioxide and put it into 10mL of an aqueous solution containing uranyl ions, where the concentration of uranyl ions is 0.3mg / L; after stirring for 30 minutes, the titanium dioxide is pre-adsorbed with uranyl ions.

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Abstract

The invention discloses a high-efficient method of extracting uranyl ions from water and belongs to the field of the water treatment technology; the method comprises the steps: absorbing the uranyl ions from the surface of an absorbing material in advance; throwing the absorbing material absorbed with the uranyl ions in advance to waste water containing the uranyl ions, stirring, filtering and finally collecting filter residues. The high-efficient method of extracting the uranyl ions from water has the advantages of simple method, easy operation at normal temperature and no other impurities introduced; the method is green, environmental-friendly, economic and effective; the secondary pollution caused by toxic pollutants is avoided; high-salt and complex ion environments in water can be overcome effectively and the selective extraction of the uranyl ions in water is realized.

Description

technical field [0001] The invention relates to a method for extracting uranyl ions in water, belonging to the technical field of wastewater treatment. Background technique [0002] Uranium is an important energy resource and plays an important role in economic construction and national defense construction. However, my country's uranium reserves are not abundant. Seawater contains about 4.0×1012kg uranium, which is 1000 times that of land reserves. Salt lake brines behave similarly to oceans, and because of their much higher inflow / evaporation ratio than oceans, they usually contain higher uranium content than seawater. Therefore, the extraction of uranium from seawater has become a promising source of unconventional nuclear fuel supply. On the other hand, with the rapid development of the global nuclear energy industry, the quantity and types of uranium-containing wastewater produced are increasing, and the sources are also very wide. A large amount of radioactive wast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21F9/12
CPCG21F9/12
Inventor 林璋庄赞勇徐存华林志荣
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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