The separation of Nd(III) from mixed rare earth via hollow fiber supported liquid membrane and mass transfer analysis

Wannachod, Thanaporn; Mohdee, Vanee; Suren, Sira; Ramakul, Prakorn; Pancharoen, Ura; Nootong, Kasidit

doi:10.1016/j.jiec.2014.11.032

Cited by 27 publications

(32 citation statements)

References 41 publications

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“…xi V was chosen as a radiotracer to determine the feasibility of using HFSLM extraction to remove short-lived transition metals from the beam dump loop. Part per trillion levels of 48 produce secondary ion beams by bombarding light target materials with heavy ion beams.…”

Section: Abstract Of the Dissertationmentioning

confidence: 99%

“…For example, Mastren et al [3] [4] researched harvesting 67 Cu using an aqueous beam stop built by Pen et al [5] at the National Superconducting Cyclotron Laboratory (NSCL) on the campus of Michigan State University, demonstrating the recovery of the radiochemically pure isotope. Loveless [6] performed successful harvesting experiments utilizing the same aqueous beam stop for 48 V. Schumann et. al.…”

Section: Isotope Harvesting At Projectile Fragmentation Facilitiesmentioning

confidence: 99%

“…Many of these coproduced isotopes are of significant interest for research in biomedicine, energy, environmental studies, and materials science. For example, an experiment utilizing 58 Ni as the primary beam will create significant quantities of 44 Ti, 48 V, 48 Cr and 52 Fe over the course of a week (Table 1) [11]. Vanadium-48 would be useful as a radiotracer for nitrogen fixation studies in plants, 48 Cr is needed as a precursor for generating isotopically pure 48 V for stockpile stewardship studies, and 52 Fe would be useful as a positron-emission tomography (PET) radiotracer for both medicine and plant sciences.…”

Section: Facility For Rare Isotope Beams (Frib)mentioning

confidence: 99%

“…For example, an experiment utilizing 58 Ni as the primary beam will create significant quantities of 44 Ti, 48 V, 48 Cr and 52 Fe over the course of a week (Table 1) [11]. Vanadium-48 would be useful as a radiotracer for nitrogen fixation studies in plants, 48 Cr is needed as a precursor for generating isotopically pure 48 V for stockpile stewardship studies, and 52 Fe would be useful as a positron-emission tomography (PET) radiotracer for both medicine and plant sciences. The FRIB heavy-ion beam begins at the front end (Figure 3) with a Super Conducting Electron Cyclotron Resonance (SC-ECR) ion source operating at 28 GHz [12].…”

Section: Facility For Rare Isotope Beams (Frib)mentioning

confidence: 99%

“…If successful, this technology has the potential to allow for the recovery of rare isotopes at a rapid rate even while the beam is in operation. This capability is essential for harvesting shorter-lived isotopes such as 48 V, which is important for stockpile stewardship [52] and plant microbiome studies [53] [54]. The 15.98-day half-life makes 48 V a good model for shorter-lived isotopes, and it already has an established HFSLM method for extraction from aqueous solution [55] [56].…”

Section: Chapter 4 Isotope Harvesting -In Situ Vanadium Feasibilitymentioning

confidence: 99%

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Isotope harvesting from the beam dump cooling loop at the facility for rare isotope beams (FRIB)

Scott¹

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Isotope harvesting from the beam dump cooling loop of the Facility for Rare Isotope Beams (FRIB) offers usable quantities of many isotopes unavailable anywhere else in the world. Many of these co-produced isotopes are of significant interest for research in biomedicine, energy, environmental studies, and materials science, and yet they are destined for disposal. One option for retrieval of these rare isotopes is harvesting from the spent mixed-bed resin in a batch collection mode. Alternatively, Hollow Fiber Supported Liquid Membrane (HFSLM) extraction poses a method of quickly retrieving these rare isotopes while overcoming the challenges associated with the beam dump environment: ultra-trace concentrations (ppt), high flow rates (4-6 L/s), neutral pH environment (6-7), vast mixture of elements, and a high radiation environment (1.3 kGy/hr). After one to two years of operation, the two 50-gallon resin tanks of Purolite NRW3460 mixed-bed resin will be hydraulically removed for transfer to storage tanks for waste shipment, at which point the isotopes will be accessible for harvesting. The lanthanides contained within this waste are of particular interest because their long half-lives and high energy density make them excellent candidates for use in nuclear batteries. 177Lu was chosen as a radiotracer to determine the feasibility of harvesting long-lived lanthanides from the mixed-bed resin. This work describes a method for high recovery of the lanthanides utilizing strong acid recirculation coupled with removal of the extracted lanthanides with an Eichrom DGA cartridge. Ninety-seven percent of dosed lanthanides were recovered from a surrogate system into only thirty milliliters of dilute acid, while utilizing approximately three column volumes of strong acid for elution. V was chosen as a radiotracer to determine the feasibility of using HFSLM extraction to remove short-lived transition metals from the beam dump loop. Part per trillion levels of 48V were successfully recovered from the aqueous feed solution spiked with chemically similar species at flow rates of 6 gallons/hour (450 mL/min.) utilizing 0.15 M Aliquat 336 in 3% dodecanol/dodecane in the HFSLM pores and 0.5 M ammonia in 0.1 M ammonium nitrate as the stripping solution. The chemical extraction efficiency from this matrix was found to be 71% in 60 minutes. This is the first ever demonstration of part per trillion level recovery with HFSLM extraction. 177Lu was chosen as a radiotracer to determine the feasibility of using HFSLM extraction to remove lanthanides from the beam dump loop. Preliminary benchtop liquid-liquid extraction tests showed successful extraction of Lu from a neutral pH feed solution with 5 mM Octyl(phenyl)-N,N-diisobutyl- carbamoylmethylphosphine oxide (CMPO) in a room temperature ionic liquid, 1-Hexyl-3methylimidazolium bis(trifluoromethylsulfonyl) imide [C6mim][Tf2N]; however, upon testing with a Liqui-Cel 1.7x10 mini module membrane contactor, it was discovered that the RTIL degraded the polycarbonate mini-module causing cracking and leaking, and no lutetium migrated to the strip solution. It is hypothesized that the high viscosity of the RTIL prevents permeation into the HFSLM pores.

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Section: Abstract Of the Dissertationmentioning

confidence: 99%

Section: Isotope Harvesting At Projectile Fragmentation Facilitiesmentioning

confidence: 99%

Section: Facility For Rare Isotope Beams (Frib)mentioning

confidence: 99%

Section: Facility For Rare Isotope Beams (Frib)mentioning

confidence: 99%

Section: Chapter 4 Isotope Harvesting -In Situ Vanadium Feasibilitymentioning

confidence: 99%

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Isotope harvesting from the beam dump cooling loop at the facility for rare isotope beams (FRIB)

Scott¹

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Green Effectively Enhanced Extraction to Produce Yttrium(III) in Slug Flow Microreactor

Guo

Chen

et al. 2020

Chin. J. Chem.

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of main observation and conclusion Process reinforcement research was carried out in Y-junction slug flow microreactors under variable conditions, using EHEHPA (2-ethylhexyl phosphonic acid mono-2-ethylhexyl) to extract yttrium(III) from hydrochloric acid solution. The influence of pH and flow rate on the extraction-reaction efficiency, slug size, mass transfer performance was assessed. The experimental results showed that maximum extraction-reaction efficiency of 91.85% can be achieved in the smallest microreactor (residence time is 11.25 s), which was significantly higher than traditional extraction requiring more than 10 min. The slug length tended to decrease with the increase of pH and flow rate. Volumetric mass transfer coefficients for the slug flow microreactors were found to be in the range of 1.39×10 −1 -1.642 s −1 that is several orders of magnitude higher as compared to traditional extractors, which testified the beneficial effects of Y-junction slug flow microreactor. Significant mass transfer reinforcement has prompted the use of microreactor as a suitable alternative to traditional extractors, which can advantageously improve the economic and environmental development of mineral processing. www.cjc.wiley-vch.deHe et al.

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Comparison of Cyanex 272 and Cyanex 572 for the separation of Neodymium from a Nd/Tb/Dy mixture by pertraction

Pavón

Kutucu

Coll

et al. 2017

J of Chemical Tech & Biotech

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BACKGROUNDRecovering Nd(III) from waste magnets is an alternative method to satisfy the increasing demand for this metal. For this reason, the separation of Nd from a mixture containing Nd/Tb/Dy in chloride media using Cyanex 272 and Cyanex 572 has been evaluated.RESULTSUsing Cyanex 272 and Cyanex 572, the metals are transported in the order Dy(III) > Tb(III) > > Nd(III) in all conditions studied. The optimum feed conditions to achieve Nd(III) separation are: Cyanex 272: pH 2 and Cyanex 572: pH 1.5 with 1.2 mol L‐1 HCl as a receiving agent for both carriers.CONCLUSIONThe results obtained suggest that Cyanex 572 is a better carrier than Cyanex 272 for separating Nd(III) from a mixture containing Nd/Tb/Dy. © 2017 Society of Chemical Industry

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The separation of Nd(III) from mixed rare earth via hollow fiber supported liquid membrane and mass transfer analysis

Cited by 27 publications

References 41 publications

Isotope harvesting from the beam dump cooling loop at the facility for rare isotope beams (FRIB)

Isotope harvesting from the beam dump cooling loop at the facility for rare isotope beams (FRIB)

Green Effectively Enhanced Extraction to Produce Yttrium(III) in Slug Flow Microreactor

Comparison of Cyanex 272 and Cyanex 572 for the separation of Neodymium from a Nd/Tb/Dy mixture by pertraction

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