Development of the MAREC Process for HLLW Partitioning Using a Novel Silica-Based CMPO Extraction Resin

Wet, Yuezhou; Zhang, Anyun; Kumagai, Mikio; Watanabe, Masayuki; Hayashi, Naoto

doi:10.3327/jnst.41.315

Cited by 41 publications

(31 citation statements)

References 9 publications

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“…As shown in the previous report [3], Sr(II) was not extracted by CMPO and was eluted in the effluents. Y(III) is adsorbed and eluted by supplying H 2 O and the wash solution (3 M HNO 3 ) [13]. Zr(IV) adsorbed by CMPO was retained and then eluted with the DTPA solution.…”

Section: X-ray Imaging On G-ray Irradiated Columnsmentioning

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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Section: X-ray Imaging On G-ray Irradiated Columnsmentioning

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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“…Nanoporous materials based solid-phase extraction still has its advantages such as being acid and alkali resistant, high temperature enduring and radiation resistant in processing HLLW. In order to develop a potential direct separation process for trivalent minor actinides, Wei et al designed a novel macroporous silica-based 2,6-bis(5,6-diisohexyl)-1,2,4-triazin-3-yl)pyridine (isohexyl-BTP) extraction resin, which was prepared by impregnating isohexyl-BTP molecules into a macroreticular styrene-divinylbenzene copolymer (SiO 2 -P) [43,44]. Subsequently, the copolymer was immobilized in porous silica particles with pore size from 50 ∼ 600 nm (Fig.…”

Section: Nanoporous Materials For the Separation Of High Level Liquidmentioning

confidence: 99%

Nanomaterials and nanotechnologies in nuclear energy chemistry

Shi

et al. 2012

Radiochimica Acta

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Summary.With the rapid growth of human demands for nuclear energy and in response to the challenges of nuclear energy development, the world's major nuclear countries have started research and development work on advanced nuclear energy systems in which new materials and new technologies are considered to play important roles. Nanomaterials and nanotechnologies, which have gained extensive attention in recent years, have shown a wide range of application potentials in future nuclear energy system. In this review, the basic research progress in nanomaterials and nanotechnologies for advanced nuclear fuel fabrication, spent nuclear fuel reprocessing, nuclear waste disposal and nuclear environmental remediation is selectively highlighted, with the emphasis on Chinese research achievements. In addition, the challenges and opportunities of nanomaterials and nanotechnologies in future advanced nuclear energy system are also discussed.

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“…These problems can be overcome by using extraction chromatography, and a impregnation method for extraction chromatography has been proposed to immobilize the organic solvents in a macroporous silica/polymer composite support (SiO 2 -P) [18,19].…”

Section: Introductionmentioning

confidence: 99%

Equilibrium and kinetic studies of selective adsorption and separation for strontium using DtBuCH18C6 loaded resin

Kim

Tozawa

et al. 2012

Journal of Nuclear Science and Technology

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(2012) Equilibrium and kinetic studies of selective adsorption and separation for strontium using DtBuCH18C6 loaded resin, Journal of Nuclear Science and Technology, 49:3, 320-327, DOI: 10.1080/00223131.2012 A crown ether loaded resin was prepared by successive impregnation and fixing the 4 0 ,4 0 (5 00 )-di(tertbutylcyclohexano)-18-crown-6 (DtBuCH18C6) and its molecule modifier, 1-dodecanol, onto the porous silica/polymer composite support (SiO 2 -P particles). The characterization of DtBuCH18C6 loaded resin was examined by thermal gravimetry and differential thermal analysis and electron probe microanalysis. The adsorption behavior of Sr(II), Cs(I), Ru(III), Pd(II), La(III), Nd(III), Sm(III), Gd(III), Zr(IV), and Mo(VI) was investigated by the batch method. Furthermore, the column test for Sr (II) was performed. The batch experiments were carried out by varying the shaking times, HNO 3 concentration, and initial concentration of metal ions. A relatively large K d value above 182 cm 3 /g for Sr(II) was obtained in the presence of 3 M HNO 3 . In contrast, the K d values of Cs(I), Ru(III), Pd(II), La(III), Nd(III), Sm(III), Gd(III), Zr(IV), and Mo(VI) were considerably lower than 10 cm 3 /g. The adsorption of Sr(II) was found to be controlled by chemisorption mechanism, and followed a Langmuir-type adsorption equation. The breakthrough curve of Sr(II) had S-shaped profile, and the elution percentage was estimated to be 99.9% by using the eluent of H 2 O.

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Development of the MAREC Process for HLLW Partitioning Using a Novel Silica-Based CMPO Extraction Resin

Cited by 41 publications

References 9 publications

Safety operation of chromatography column system with discharging hydrogen radiolytically generated

Safety operation of chromatography column system with discharging hydrogen radiolytically generated

Nanomaterials and nanotechnologies in nuclear energy chemistry

Equilibrium and kinetic studies of selective adsorption and separation for strontium using DtBuCH18C6 loaded resin

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