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Composite functional material for removing radioiodine and application of composite functional material

A composite functional and radioactive iodine technology, applied in the field of composite functional materials, can solve the problems of low adsorption efficiency of iodine ion adsorption materials, and achieve the effects of increasing reactive sites, low secondary environmental pollution, and low sensitivity to reaction conditions

Active Publication Date: 2020-02-18
NANCHANG UNIV
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Problems solved by technology

[0004] The present invention aims at the technical defects of the prior art, and provides a composite functional material for removing radioactive iodine and its application, so as to solve the technical problem of low adsorption efficiency of conventional iodine ion adsorption materials in the prior art

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  • Composite functional material for removing radioiodine and application of composite functional material

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Embodiment Construction

[0032]Specific embodiments of the present invention will be described in detail below. In order to avoid too many unnecessary details, well-known structures or functions will not be described in detail in the following embodiments. Approximate language used in the following examples is for quantitative representations, indicating that certain variations in quantities are permissible without altering essential function. Unless defined otherwise, technical and scientific terms used in the following examples have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0033] A composite functional material for removing radioactive iodine, the composite functional material is prepared by the following method:

[0034] (1) Take 3g of the purchased titanium silicon carbide powder raw material in a 100ml polytetrafluoroethylene-lined reactor, then add HF (>40%) dropwise to the reactor until the excess (about 80ml) is added dropw...

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Abstract

The invention provides a composite functional material for removing radioiodine and an application of the composite functional material. According to the technical scheme, a sea-mussel simulating chemical method is combined, a dopamine monomer is polymerized on the surface of a hydrofluoric acid etched titanium-silicon carbide powder material so as to serve as a secondary reaction platform, then,Bi6O7 nanoparticles are supported, and an obtained powdery two-dimensional layered composite functional adsorbent is used for removing radioiodine ions from waste liquid. According to the composite functional material and the application thereof, the material synthesis method is simple, reaction conditions are low in sensitivity, the synthesized adsorbent material is of a two-dimensional layered structure and has a relatively large specific surface area, reacting active sites are increased, the comprehensive performance is good, the stability is relatively high, the rate of adsorption is increased remarkably, and thus, the adsorbent material is an effective adsorbent for treating iodine ions in radioactive waste liquid. Bismuth oxyiodide microcrystals are formed by the Bi6O7 nanoparticleson the surface of the material and the iodine ions, serve as an adsorbent, the rate of adsorption is high, the steady time of adsorption reaches about 50 minutes, and the removal rate of the iodine ions can reach about 70%.

Description

technical field [0001] The invention relates to the technical field of environmental materials, and further relates to the purification treatment technology of radioactive waste liquid in environmental protection, in particular to a composite functional material for removing radioactive iodine and its application Background technique [0002] Radioactive iodine refers to radioactive isotopes of iodine, mainly including 129 I. 131 I. 123 I. 124 I and 125 I and so on. As one of the products of nuclear fission, radioactive iodine widely exists in the waste liquid of nuclear fission. 131 The form I exists with a half-life ranging from 8.04 days to 1.57×10 7 It can flow in natural water bodies, and if not treated, it will enter aquatic environments such as oceans, rivers, and groundwater; in addition, radioactive iodine is also widely used in medical fields, such as 131 I is used to treat hyperthyroidism and thyroid cancer, 125 I is used for thyroid tumor biopsy, thyroid ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28
CPCB01J20/262B01J20/28057B01J20/02B01J20/28011B01J20/0259B01J20/0203B01J20/027B01J20/28033C02F1/285C02F2101/006
Inventor 周耐根沙学丰张小勇刘美英
Owner NANCHANG UNIV
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