Solid-phase adsorbing material, preparation method thereof and application of adsorbing material

A solid-phase adsorption and extraction agent technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., to achieve strong adsorption capacity and good application prospects

Inactive Publication Date: 2019-06-18
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] But so far, there is no ideal solid-phase adsorption material that can selectively adsorb most valence states of actinid

Method used

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  • Solid-phase adsorbing material, preparation method thereof and application of adsorbing material
  • Solid-phase adsorbing material, preparation method thereof and application of adsorbing material
  • Solid-phase adsorbing material, preparation method thereof and application of adsorbing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Example 1: Preparation and detection of solid-phase adsorption material (1)

[0046] Using N,N'-dimethyl-N,N'-dioctyl-3-oxa-glutaramide as extractant and Amberlite XAD7HP as support to prepare solid-phase adsorption material, and its Partition coefficients for adsorption of metal ions from nitric acid solutions.

[0047] The preparation process is as follows:

[0048] (1) Dissolve 7.0 g of N,N'-dimethyl-N,N'-dioctyl-3-oxa-glutaramide (DMDODGA) in 40 mL of methanol;

[0049](2) Put Amberlite XAD7HP granules with a particle size of 20-60 mesh that have been dried to constant weight into a 250mL single-necked flat-bottomed flask, and put a polytetrafluoroethylene-coated magnet;

[0050] (3) Add the solution dropwise into the flask under electromagnetic stirring conditions, and stir for 30 minutes;

[0051] (4) Rotary evaporation at 40° C. to constant weight to obtain the target solid-phase adsorption material, wherein the mass content of DMDODGA is 35.0%.

[0052] Stat...

Embodiment 2

[0060] Embodiment 2: Preparation and detection of solid-phase adsorption material (two)

[0061] Preparation of solid phase with N,N'-dimethyl-N,N'-dioctyl-3-oxa-glutaramide as extractant and starting monomers with styrene and divinylbenzene as supports Adsorption material, and its distribution coefficient of adsorbing metal ions from hydrochloric acid solution was determined by static adsorption experiment.

[0062] The preparation process is as follows:

[0063] Mix 15.0g of styrene monomer and 10.0g of divinylbenzene monomer evenly, add 0.5g of purified azobisisopropionitrile (ALBN) as an initiator, and then add 15.0g of N,N'-dimethyl- N,N'-dioctyl-3-oxa-glutaramide (DMDODGA), stir well as the oil phase. In addition, 6.0g of gelatin was dissolved in 500mL of boiling water, then 0.5g of calcium carbonate and 0.05g of Triton X-100 were added and mixed uniformly as the water phase, and its temperature was kept at 45°C. Add the oil phase to the water phase, stir for 20 minut...

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Abstract

The invention belongs to the technical field of radioactive waste water treatment, and relates to a solid-phase adsorbing material, a preparation method thereof and an application of the adsorbing material. The solid-phase adsorbing material comprises extraction agents with structures as shown in a formula (a) or (b). The solid-phase adsorbing material can achieve good adsorption performances for+3, +4 and +6 valence state (+6 valence state ions are actinium acyl ions) actinide ions and lanthanide ions within a wide acidity range.

Description

technical field [0001] The invention belongs to the technical field of radioactive wastewater treatment, and relates to a solid-phase adsorption material and its preparation method and application. Background technique [0002] At present, nuclear technologies related to radionuclides are widely used in the fields of energy, military, medical and scientific research. However, waste water containing radionuclides may be produced in many links of radionuclide-related nuclear technology applications, such as uranium mining and smelting, component manufacturing, spent fuel reprocessing, and nuclear waste treatment; at the same time, nuclear weapon explosions or During the operation of nuclear facilities, some radionuclides are also released into the environment. Among these radionuclides, actinides and lanthanides account for a considerable part. [0003] Most of the α-particle-emitting nuclides that are of great concern to radioactive wastewater treatment and environmental ra...

Claims

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Application Information

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IPC IPC(8): C02F1/28B01J20/22B01J20/30
Inventor 田国新杨素亮张生栋周今张曦杨志红
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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