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Method for recovering 100 Mo from process waste liquid of 99 mTc production through 100 Mo accelerator irradiation based on separation and purification technology

A 99mtc and accelerator technology, applied in the field of medical isotope production, can solve the problems of high cost and low production efficiency, and achieve the effect of reducing production cost, reducing side reactions and improving economic benefits

Inactive Publication Date: 2020-09-04
西安迈斯拓扑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] To solve the use 100 target generation 99m The method cost of Tc is higher, the problem of low production benefit, the present invention provides a kind of method based on separation and purification technology from accelerator irradiation 100 Mo production 99m Recovery from Tc process waste liquid 100 Mo's method

Method used

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  • Method for recovering 100 Mo from process waste liquid of 99 mTc production through 100 Mo accelerator irradiation based on separation and purification technology
  • Method for recovering 100 Mo from process waste liquid of 99 mTc production through 100 Mo accelerator irradiation based on separation and purification technology
  • Method for recovering 100 Mo from process waste liquid of 99 mTc production through 100 Mo accelerator irradiation based on separation and purification technology

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Experimental program
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Effect test

Embodiment 1

[0042] accelerator irradiation 100 Mo target, produced by extraction process 99m The waste liquid after Tc is K 2 100 MoO 4 5Mol / L KOH waste liquid, measured by ICP-OES in the waste liquid 100 The Mo concentration was 0.04 g / mL. Pipette 10mL of this waste liquid, and the waste liquid flows through an exchange column equipped with 2gAG1×8 anion resin, then wash the column with 4 mL 5Mol / L KOH solution, combine and collect the effluent; put the collected effluent into a vacuum drying oven , vacuum-dry at 90°C to constant weight, add 10mL of absolute ethanol to the residue, stir thoroughly, filter with a sand core funnel, wash the filter residue twice with 10mL of absolute ethanol, and obtain solid potassium molybdate powder; use 10mL of 0.1Mol / L ammonia water is heated to dissolve the solid potassium molybdate powder, and 10mL 0.05g / mL tetrabutylammonium bromide [(n-C 4 h 9 ) 4 NBr] solution, under stirring, add 2Mol / L HCl dropwise to neutralize and acidify the solution...

Embodiment 2

[0044] Collect used adsorbents 100 Acidic alumina column of Mo (500mg), confirmed that 99 Mo decays completely, desorb with 200mL 6Mol / L HCl 100 Mo was evaporated to dryness, and dissolved in 25mL 0.1 Mol / L concentrated ammonia water to obtain 100 Mo waste liquid, transfer the solution to a 125mL pear-shaped separatory funnel, add 25mL methyl ethyl ketone, shake for 10min, let it stand for stratification, and collect the aqueous phase solution from the lower mouth of the funnel; ℃ vacuum drying to constant weight, add 10mL of absolute ethanol to the residue, stir well, filter with sand core funnel, wash with 10mL of absolute ethanol twice to obtain solid ammonium molybdate powder; use 12.5mL of 0.1Mol / L ammonia water was heated to dissolve, and 12.5mL 0.05g / mL tetrabutylammonium bromide [(n-C 4 h 9 ) 4 NBr] solution, under stirring, add 2Mol / L HCl dropwise to neutralize and acidify the solution until a large amount of yellow precipitates are formed, heat the solution to ...

Embodiment 3

[0046] Collect used adsorbents 100 Acidic alumina column of Mo (500mg), confirmed that 99 Mo decays completely, desorb with 200mL 6Mol / L HCl 100 Mo was evaporated to dryness, and dissolved in 25mL 0.1 Mol / L concentrated ammonia water to obtain 100Mo waste liquid, transfer the solution to a 125mL pear-shaped separatory funnel, add 25mL methyl ethyl ketone, shake for 10min, let it stand for stratification, and collect the aqueous phase solution from the lower mouth of the funnel; ℃ vacuum drying to constant weight, add 10mL of absolute ethanol to the residue, stir well, filter with sand core funnel, wash 2 times with 10mL of absolute ethanol to obtain solid ammonium molybdate powder; use 25mL of ammonium molybdate powder containing 10% h 2 o 2 dissolved in 6Mol / L HCl, transferred to a 125mL pear-shaped separatory funnel, extracted 5 times with an equal volume of ether, combined the organic phases, evaporated to remove the ether to obtain a residue, and put the residue in a h...

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Abstract

The invention relates to a method for recovering 100 Mo from process waste liquid of 99 mTc production through 100 Mo accelerator irradiation based on a separation and purification technology. In thesteps of pretreatment of the 100 Mo waste liquid, removal of Tc impurities, removal of other impurities, MoO3 conversion, metal Mo reduction and the like, impurities such as Tc, Zr, Nb, Y, Sr and Na or K and the like in the 100 Mo waste liquid are removed, 100 Mo is separated and purified and reduced into 100 Mo metal powder, the recovery rate is greater than 80%, and the chemical purity meets recycling requirements. The price of high-concentration 100 Mo is high, by using the method, 100 Mo is recycled, therefore the generation cost of the 99 mTc can be greatly reduced, and the economic benefit is improved.

Description

technical field [0001] The invention belongs to the technical field of medical isotope production, in particular to a method for irradiating from an accelerator 100 Production 99m Recovery from Tc process waste liquid 100 Mo's method. Background technique [0002] 99m Tc is a very important and widely used medical isotope. Reactor neutron irradiation is generally used 235 U makes it fission to produce 99 Mo, 99 Mo produced by β decay 99m Tc, this method can obtain high specific activity 99m Tc, but will produce a large amount of radioactive waste. Electron accelerators can also be used to irradiate highly concentrated γ-rays through bremsstrahlung 100 target, generate 99 Mo, 99 Mo produced by β decay 99m Tc, the nuclear reaction is 100 Mo(γ,n) 99 Mo(β) 99m Tc. In addition, proton accelerators can also be used to pass 100 Mo(p,2n) 99m Tc direct production 99m Tc. These two non-fission methods produce 99m The Tc method does not produce radioactive waste, ...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B34/34
CPCC22B7/006C22B34/34Y02P10/20
Inventor 王思弘张宇皓王柏松
Owner 西安迈斯拓扑科技有限公司