Selective adsorbent for caesium and preparation method of selective adsorbent

An adsorbent and selective technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, radioactive purification, etc., can solve problems such as being unsuitable for fixed bed operation, and achieve good adsorption effect, high selectivity, and large adsorption capacity. Effect
CN105688853AInactive Publication Date: 2016-06-22NAVAL UNIV OF ENG PLA
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NAVAL UNIV OF ENG PLA
Publication Date
2016-06-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a cesium selective adsorbent and a preparation method thereof. The method comprises the following steps: (a) uniformly dispersing inorganic ion exchanger powder in a chitosan solution to obtain an aqueous phase required by a reverse suspension method; (b) add emulsifier in aviation kerosene, obtain the required oil phase of inverse suspension method after fully stirring; (c) mix the water phase and oil phase that step (a) and step (b) obtain, in water-bath condition After stirring and dispersing for 3-5 hours, quickly pour into the coagulation bath, after stirring and layering, fully clean the gel microspheres at the bottom of the solution; (d) mix the gel microspheres and crosslinking agent obtained in step (c) performing a cross-linking reaction, washing and drying the cross-linked microspheres to obtain the cesium selective adsorbent. The cesium selective adsorbent prepared by the present invention has good adsorption effect, ＋ It has high selectivity and large adsorption capacity.
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Description

technical field

[0001] The invention relates to the field of radioactive waste liquid treatment, in particular to a cesium selective adsorbent and a preparation method thereof. Background technique

[0002] During the construction, testing, operation, maintenance, and decommissioning of nuclear power plants, a large amount of radioactive wastewater will be generated. If the wastewater is discharged directly, the radionuclides contained in it will migrate through water and soil, threatening human health and the environment. Safety. Therefore, properly, economically and effectively completing the treatment of radioactive wastewater plays an important role in promoting the development of the nuclear industry and promoting the use of nuclear energy.

[0003] Generally speaking, in the process of radioactive wastewater treatment, the radionuclide is mainly separated and extracted from the wastewater by various methods, then solidified, and disposed of for a long time to isolate ...

Claims

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