Separation and preconcentration of actinides by extraction chromatography using a supported liquid anion exchanger: application to the characterization of high-level nuclear waste solutions

Horwitz, E. P.; Dietz, Mark L.; Chiarizia, R.; Diamond, H.; Maxwell, Sherrod L.; Nelson, Matthew R.

doi:10.1016/0003-2670(95)00144-o

Cited by 429 publications

(252 citation statements)

References 22 publications

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“…In this method, the extractant is immobilized on the surface of inert resin beads, corresponding to the organic, stationary phase in solvent extraction and chromatography, respectively. Since commercialization of extraction chromatographic resins by Eichrom Technologies Inc. in 1990's, extraction chromatography has been widely used in radiochemical analysis of 99 Tc [7,10,11,21,25,62,73,[105][106][107].…”

Section: Extraction Chromatographymentioning

confidence: 99%

Determination of technetium-99 in environmental samples: A review

Shi

Hou

Roos

et al. 2012

Analytica Chimica Acta

111

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Section: Extraction Chromatographymentioning

confidence: 99%

Determination of technetium-99 in environmental samples: A review

Shi

Hou

Roos

et al. 2012

Analytica Chimica Acta

111

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“…The extraction chromatography technology is one of the promising methods for the partitioning of minor actinide (MA: Am and Cm) from spent nuclear fuel [1], and Japan Atomic Energy Agency (JAEA) has been conducting research and development for the implementation. In those studies, we carried out design of an appropriate flow sheet [2], laboratory scale separation experiments on a genuine high level liquid waste [3], development of the engineering scale apparatus [4] and inactive repeated separation experiments using the large scale apparatus [5].…”

Section: Introductionmentioning

confidence: 99%

Safety operation of chromatography column system with discharging hydrogen radiolytically generated

Watanabe

Sano

Nomura

et al. 2015

EPJ Nuclear Sci. Technol.

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Abstract. In the extraction chromatography system, accumulation of hydrogen gas in the chromatography column is suspected to lead to fire or explosion. In order to prevent the hazardous accidents, it is necessary to evaluate behaviors of gas radiolytically generated inside the column. In this study, behaviors of gas inside the extraction chromatography column were investigated through experiments and Computation Fluid Dynamics (CFD) simulation. N 2 gas once accumulated as bubbles in the packed bed was hardly discharged by the flow of mobile phase. However, the CFD simulation and X-ray imaging on g-ray irradiated column revealed that during operation the hydrogen gas generated in the column was dissolved into the mobile phase without accumulation and discharged.

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“…Styrene-divinylbenzene copolymer resins containing quaternary ammonium groups have been conventionally used to separate actinides in acidic media [1,2]. Recently, extractant-impregnated resins manufactured by Eichrom Industries (e.g., TEVA [3,4], UTEVA [5], and TRU resins [6][7][8]) have been used as an alternative method because of the specific selectivity for actinides over a wide range of acidities. However, the resins in a bead form have a disadvantage that a longer time is required for ions to diffuse into the interior of the beads with a larger diameter.…”

Section: Introductionmentioning

confidence: 99%

“…This is due to the negligible mass-transfer resistance of Pu in the pore interior to and from the DEA group of the graft chain during adsorption and elution, respectively. Transport of Pu aided by the permeative flow of the solution through the pore of the DEA disk achieved a quantitative recovery at a tenfold higher flow rate than conventional anion-exchange resins that was governed by the diffusive transport of Pu [3,[6][7][8].…”

mentioning

confidence: 99%

Rapid Separation of Actinides Using an Anion-exchange Polymer Chain Grafted onto a Porous Sheet

Asai

Magara

Sakurai

et al. 2007

Journal of Ion Exchange

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A diethylamino (DEA) group as an anion exchanger was introduced into a polymer chain grafted onto the pore surface of a porous sheet. The resultant porous sheet was cut into disks to fit a cylindrical cartridge (DEA cartridge) and the adsorption-elution behaviors for actinides were investigated. U and Pu in 10 M HCl-0.1 M HNO3 were adsorbed on the DEA cartridge, and quantitative recoveries were achieved with 7 M HNO3 and 1 M HCl, respectively. The elution curves of Pu with 10 M HCl-0.1 M HNO3 and 1 M HCl overlapped irrespective of its flow rate.The flow rates of the loading and stripping solutions permeating through the pores of the DEA disk were 6-10 times higher than those through the interstices of an anion-exchange-resin-bead-packed column. The decontamination factors evaluated from a mutual separation of Am, U, and Pu were higher than 104 for both U and Pu fractions. The time required for the mutual separation was approximately 1 h.

show abstract

Separation and preconcentration of actinides by extraction chromatography using a supported liquid anion exchanger: application to the characterization of high-level nuclear waste solutions

Cited by 429 publications

References 22 publications

Determination of technetium-99 in environmental samples: A review

Determination of technetium-99 in environmental samples: A review

Safety operation of chromatography column system with discharging hydrogen radiolytically generated

Rapid Separation of Actinides Using an Anion-exchange Polymer Chain Grafted onto a Porous Sheet

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