Solvent Extraction of Perrhenate from Sulfuric Acid Medium by Triisooctylamine

Shan, Wei; Cheng, Peng; Li, Jun; Xiong, Ying; Fang, Dawei; Zang, Shuliang

doi:10.1021/acs.jced.5b00188

Cited by 11 publications

(3 citation statements)

References 18 publications

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“…To address the above issues, various techniques including solvent extraction, [ 8 ] ion exchange, [ 9 ] photocatalysis, [ 10 ] electrocatalysis, [ 11 ] and chemical catalysis [ 12 ] have been developed for the extraction of 99 TcO 4 − /ReO 4 − under neutral, mildly acidic or alkaline conditions. However, few of these methods can efficiently remove 99 TcO 4 − under conditions relevant to real radioactive waste, such as in 3 m HNO 3 or super alkaline conditions, at high ionic strengths or following large doses of radiation, motivating the search for more practical 99 TcO 4 − capture technologies.…”

Section: Introductionmentioning

confidence: 99%

Functional Carbon Capsules Supporting Ruthenium Nanoclusters for Efficient Electrocatalytic ⁹⁹TcO₄⁻/ReO₄⁻ Removal from Acidic and Alkaline Nuclear Wastes

Liu,

Xie,

et al. 2023

Advanced Science

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The selective removal of the β‐emitting pertechnetate ion (99TcO4−) from nuclear waste streams is technically challenging. Herein, a practical approach is proposed for the selective removal of 99TcO4− (or its surrogate ReO4−) under extreme conditions of high acidity, alkalinity, ionic strength, and radiation field. Hollow porous N‐doped carbon capsules loaded with ruthenium clusters (Ru@HNCC) are first prepared, then modified with a cationic polymeric network (R) containing imidazolium‐N+ units (Ru@HNCC‐R) for selective 99TcO4− and ReO4− binding. The Ru@HNCC‐R capsules offer high binding affinities for 99TcO4−/ReO4− under wide‐ranging conditions. An electrochemical redox process then transforms adsorbed ReO4− to bulk ReO3, delivering record‐high removal capacities, fast kinetics, and excellent long‐term durability for removing ReO4− (as a proxy for 99TcO4−) in a 3 m HNO3, simulated nuclear waste‐Hanford melter recycle stream and an alkaline high‐level waste stream (HLW) at the U.S. Savannah River Site (SRS). In situ Raman and X‐ray absorption spectroscopy (XAS) analyses showed that adsorbed Re(VII) is electrocatalytically reduced on Ru sites to a Re(IV)O2 intermediate, which can then be re‐oxidized to insoluble Re(VI)O3 for facile collection. This approach overcomes many of the challenges associated with the selective separation and removal of 99TcO4−/ReO4− under extreme conditions, offering new vistas for nuclear waste management and environmental remediation.

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Section: Introductionmentioning

confidence: 99%

Functional Carbon Capsules Supporting Ruthenium Nanoclusters for Efficient Electrocatalytic ⁹⁹TcO₄⁻/ReO₄⁻ Removal from Acidic and Alkaline Nuclear Wastes

Liu,

Xie,

et al. 2023

Advanced Science

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“…Solvent extraction of rhenium from acidic solutions is carried out using neutral extractants such as TBP (Tributyl phosphate) and TOPO (Trioctylphosphine oxide) (Cheema et al, 2018;Hosseinzadeh et al, 2014;Keshavarz Alamdari et al, 2012;Sato and Sato, 1990;Schrötterová and Nekovář, 2006; as well as basic extractants such as tertiary amines (Fang et al, 2014;Kang et al, 2013;Kim et al, 2015;Shan et al, 2015). Cheema et al studied the extraction of rhenium from leach liquor of molybdenite roasting fluedust using TBP.…”

Section: Introductionmentioning

confidence: 99%

Recovery of molybdenum and rhenium in scrub liquors of fumes and dusts from roasting molybdenite concentrates

et al. 2019

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The present work a ddresses t he recovery of rhenium from scrub l iquor of molybdenite c oncentrate roasting fume a nd dust by solvent extraction method. According t o t he results, recovery of rhenium from t he scrub l iquor i s n ot practical unless molybdenum i s removed i n a dvance. The e xtraction of molybdenum was c arried out using a D2EHPA-TBP system which resulted i n up t o 99.8% Mo extraction i n a t wo-stage solvent e xtraction a t pH = 1 a nd O/A = 1. Up t o 99.6% of Re was e xtracted subsequently using TOA i n a single-stage e xtraction a t pH = − 0.3 a nd O/A = 1:20. The organic phase was stripped by a mmonium h ydroxide 3 2% a nd t he resultant l iquor was further subjected t o e vaporation a s a result of which, a n e nriched purified solution was obtained. Ammonium perrhenate was precipitated from t he e nriched l iquor by a djusting t he pH t o 6.5-7.

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“…Therefore, a potentially effective method for the treatment of Tc(VII)-contaminated waste can be simulated by adsorbing Re(VII). A host of techniques have been adopted to recover Re(VII), such as solvent extraction, − ion exchange, adsorption, − and precipitation. Among them, tertiary amine groups containing adsorbents still play an important role in recovering rhenium by electrostatic attraction. , Thus, tertiary amine groups cooperating with extraction or adsorption techniques possessing high selectivity and large capacity have been broadly exploited and used to recovery rhenium.…”

Section: Introductionmentioning

confidence: 99%

Improving Re(VII) Adsorption on Diisobutylamine-Functionalized Graphene Oxide

Xiong

Cui

Zhang

et al. 2016

ACS Sustainable Chem. Eng.

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In this study, we synthesized a series of diisobutylamine-functionalized graphene oxides as adsorbents (GO-DEA-DIBA) by adjusting synthetic conditions for the efficient adsorption of rhenium(VII) (Re(VII)). Results indicated that the best mass ratio was 10 mg of sodium carbonate to 5 g of distilled water, and a cooling time of 44 min could prevent the exfoliation of functional groups and achieve higher uptake capacity of Re(VII). The maximum uptake of Re(VII) was found to be 140.82 mg g–1 at 303 K with an initial Re(VII) concentration of 800 mg L–1. More importantly, it can be clearly seen that mixed ions (Cu2+, Zn2+, and Mn2+) could almost separate with Re(VII) on the adsorption of ReO4 – onto the GO-DEA-DIBA with a weak acidity solution. Re(VII) was adsorbed on the GO-DEA-DIBA via charge interactions between tertiary amine groups and ReO4 – by infrared spectroscopy and X-ray photoelectron spectroscopy analysis. In addition, adsorption behavior, adsorption isotherms, desorption, and regeneration are also discussed. This study not only discusses the thermodynamic stability of functional graphene oxide but also provides a new method for the separation of Re(VII) from solution using GO-DEA-DIBA owing to its environmental friendliness and relatively low cost.

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Solvent Extraction of Perrhenate from Sulfuric Acid Medium by Triisooctylamine

Cited by 11 publications

References 18 publications

Functional Carbon Capsules Supporting Ruthenium Nanoclusters for Efficient Electrocatalytic ⁹⁹TcO₄⁻/ReO₄⁻ Removal from Acidic and Alkaline Nuclear Wastes

Functional Carbon Capsules Supporting Ruthenium Nanoclusters for Efficient Electrocatalytic ⁹⁹TcO₄⁻/ReO₄⁻ Removal from Acidic and Alkaline Nuclear Wastes

Recovery of molybdenum and rhenium in scrub liquors of fumes and dusts from roasting molybdenite concentrates

Improving Re(VII) Adsorption on Diisobutylamine-Functionalized Graphene Oxide

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Solvent Extraction of Perrhenate from Sulfuric Acid Medium by Triisooctylamine

Cited by 11 publications

References 18 publications

Functional Carbon Capsules Supporting Ruthenium Nanoclusters for Efficient Electrocatalytic 99TcO4−/ReO4− Removal from Acidic and Alkaline Nuclear Wastes

Functional Carbon Capsules Supporting Ruthenium Nanoclusters for Efficient Electrocatalytic 99TcO4−/ReO4− Removal from Acidic and Alkaline Nuclear Wastes

Recovery of molybdenum and rhenium in scrub liquors of fumes and dusts from roasting molybdenite concentrates

Improving Re(VII) Adsorption on Diisobutylamine-Functionalized Graphene Oxide

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Functional Carbon Capsules Supporting Ruthenium Nanoclusters for Efficient Electrocatalytic ⁹⁹TcO₄⁻/ReO₄⁻ Removal from Acidic and Alkaline Nuclear Wastes

Functional Carbon Capsules Supporting Ruthenium Nanoclusters for Efficient Electrocatalytic ⁹⁹TcO₄⁻/ReO₄⁻ Removal from Acidic and Alkaline Nuclear Wastes