Rhenium(VII) extraction with 2-ethylhexanoic acid N,N-dialkylhydrazides from acidic solutions

Батуева, Т. Д.; Radushev, A. V.; Tuktareva, T. A.; Degtev, M. I.; Nasrtdinova, T. Yu.; Karmanov, V. I.

doi:10.1134/s0036023610050244

Cited by 6 publications

(1 citation statement)

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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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