Study of the ability of 2-AMPR resin to separate Re(VII) from U(VI) in acidic aqueous solutions
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Study of the ability of 2‑AMPR resin to separate Re(VII) from U(VI) in acidic aqueous solutions Rong Hua1 · Yu Zhang1 · Fuping Liu1 · Yang Li1 · Chuan‑Pin Lee1 · Zhen Dong2 Received: 31 March 2020 © Akadémiai Kiadó, Budapest, Hungary 2020
Abstract In this work, the 2-AMPR resin was used to separate rhenium from uranium in acidic aqueous solution. The morphology and structure of 2-AMPR before and after adsorption were characterized using SEM, FT-IR, and XPS. In both the static and dynamic adsorption–desorption experiments, the 2-AMPR resin showed excellent enrichment capacity for rhenium, which means that the 2-AMPR anion exchange resin has good industrial application prospects in terms of recovery of rhenium. Keywords 2-AMPR resin · Adsorption–desorption · Rhenium · Uranium
Introduction Researches on recovery of resources coexisting with uranium significantly contribute to improving hydrometallurgy technologies and meanwhile reducing uranium boundary grade. Rhenium is the rarest element on earth [1–3], which has been found in uranium mines in Xinjiang and Inner Mongolia. With excellent thermal-resistant performance, it is widely used in aeronautics and astronautics, electronic components, nuclear power and other industries [2–4]. Moreover, rhenium is used as a substitute for Technetium used in the researches on cold testing of spent fuels because of their similarity in chemical properties. Therefore, conducting researches on the separation and enrichment of rhenium in complex matrix with high uranium contents is remarkably needed to meet the urgent demand of the uranium mining industry in China to recover coexisting rhenium, and boost the research and development of spent fuel reprocessing technologies. In the past few years, there are various methods that have been developed and utilized to recover rhenium, such as chemical precipitation, extraction, distillation, and ion * Rong Hua [email protected] 1
State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, Jiangxi, China
Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
2
exchange [5–10]. Among them, ion exchange and extraction are the main methods [8–10]. Both of these methods have their suitable conditions, respectively. Ion exchange mainly used for recovering low concentration solutions and was characterized by being sustainable and environment friendly, with easy process control, etc. [11, 12]. Ion exchange resin has advantages such as high molecular weight, many functional groups, and easy recovery and reuse [13, 14]. Such as, Xiong et al. [15] separated rhenium from molybdenum using 4-amino-1,2,4-triazole resin, the separation coefficient between rhenium and molybdenum βRe/Mo = 17.3 at pH 2.6. Nebeker et al. [16] found that rhenium could be recovered from copper leach using a weak base resin. Cheema et al. [17] described the rhenium was recovered selectively from molybdenite flue-dust leach liquor using solvent extraction with TBP. Therefore, the ion exchange met
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