Ion exchange investigation for recovery of uranium from acidic pregnant leach solutions

Danko, B.; Dybczyński, R.; Samczyński, Zbigniew; Gajda, Dorota; Herdzik-Koniecko, Irena; Zakrzewska-Kołtuniewicz, Grażyna; Chajduk, Ewelina; Kulisa, Krzysztof

doi:10.1515/nuka-2017-0031

Cited by 27 publications

(16 citation statements)

References 19 publications

(21 reference statements)

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“…Danko et al proposed to use Dowex 1X10 and Dowex 50WX4 for valuable metals extraction from pregnant leach liquors from extraction of Polish ore. The recovery of lanthanides was 99% [42].…”

Section: Separation Of Ree From Polish Resourcesmentioning

confidence: 93%

Perspective of Obtaining Rare Earth Elements in Poland

Kiegiel¹,

Miśkiewicz²,

Herdzik-Koniecko³

et al. 2019

Lanthanides

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Along with the increasing development of electric and electronic industries, the demand for rare earth elements is also growing due to their high position in many applications. In Poland, there are minerals containing REE; however, the concentration of these elements in raw materials is rather low, so they do not have a big impact on the national economy. The potential source of REE is secondary materials; among them are phosphogypsum, uranium tailings, and the waste electrical and electronic equipment (WEEE). Lanthanides as accompanying metals of uranium in Polish uranium ores were leached in the technology of uranium recovery from these resources. The recovery of REE from pregnant liquors was conducted by solvent extraction and ion exchange. Novel apparatus solutions like membrane contactors in extraction stage were tested. Different types of matrices (uranium ore, phosphorites, etc.) were used.

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“…Danko et al proposed to use Dowex 1X10 and Dowex 50WX4 for valuable metals extraction from pregnant leach liquors from extraction of Polish ore. The recovery of lanthanides was 99% [42].…”

Section: Separation Of Ree From Polish Resourcesmentioning

confidence: 93%

Perspective of Obtaining Rare Earth Elements in Poland

Kiegiel¹,

Miśkiewicz²,

Herdzik-Koniecko³

et al. 2019

Lanthanides

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“…The separation of solid residue from liquid leaves the post-leaching solution that is a mixture of different metal ions. Uranium and other metals can be recovered from post-leaching solutions by solvent extraction [21][22][23][24] followed by stripping to aqueous phase [25,26] or by ion exchange [27,28].…”

Section: Recovery Of Uranium From the Post-leaching Solutionmentioning

confidence: 99%

“…The ion exchange is a very efficient method that can be used for separation of uranium from other metals. The separation of uranium from acid pregnant leach solution obtained from Polish uranium ores, using commercially available, strongly basic anion exchanger, Dowex 1 was investigated [28]. The feed solution was introduced into the column.…”

Section: Recovery Of Uranium By Ion Exchangementioning

confidence: 99%

Uranium in Poland: Resources and Recovery from Low-Grade Ores

Kiegiel¹,

Miśkiewicz²,

Gajda³

et al. 2018

Uranium - Safety, Resources, Separation and Thermodynamic Calculation

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The presented studies deal with an assessment of the possibility of uranium recovery from the low-grade uranium resources in Poland. Uranium was leached from the ground uranium ores with efficiencies in 81-100% range that depend on the type of ore and leaching solution used. In the next step, the post-leaching solution was treated by the solvent extraction or ion exchange chromatography to separate uranium from other metals present in the ore. The novel routes of leaching by using membrane methods were examined. The final product, "yellow cake," was obtained in precipitation step. The studies of precipitation of uranium as ammonium diuranate or uranium peroxide from diluted uranium solutions are presented in this chapter. The work was completed with tentative economic analysis and environmental impact assessment along with radiation protection issues connected to uranium production.

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“…Strong base ionites have found their application in the processing of ISL solutions in China [9]. Weak base ionites are often used for sorption of uranium from sulfuric acid solutions [10]. Since uranium in the pregnant leach solution of black shale ore exists in anionic form, cation-exchange resins are not considered in this article.…”

Section: Introductionmentioning

confidence: 99%

“…The ion exchange mechanism of uranium recovery from solution loaded with uranium is shown in Figure 1. It is known that uranium is represented as ions in acidic sulfuric acid solutions, such as UO2 2+ , UO2SO4 and [UO2(SO4)2]2 [10,11].…”

Section: Introductionmentioning

confidence: 99%

Uranium (VI) Recovery from Black Shale Leaching Solutions Using Ion Exchange: Kinetics and Equilibrium Studies

et al. 2020

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This work studies the removal of uranium ions from chemically leached solutions by sorption using two weak and two strong base anionites. Batch sorption experiments were performed to evaluate the optimum conditions at pH 1.2–2.2, 1.0 g resin dose for 1–12 h contact time at room temperature. These experiments addressed sorption kinetics and sorption isotherm. The maximum sorption capacity reached 55.8 mg/g at room temperature. The kinetics data are well described by the pseudo-second-order kinetic model at initial uranium concentration of 0.62 mg·L−1. To describe sorption kinetics pseudo-first-order, pseudo-second-order and intraparticle diffusion models were proposed. Studies indicated that the sorption of uranium can be fitted by a pseudo-second-order kinetic model very well. Equilibria were described by Langmuir, Freundlich, and Dubinin–Radushkevich equations. The experimental sorption isotherm is successfully described by the Langmuir model.

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Ion exchange investigation for recovery of uranium from acidic pregnant leach solutions

Cited by 27 publications

References 19 publications

Perspective of Obtaining Rare Earth Elements in Poland

Perspective of Obtaining Rare Earth Elements in Poland

Uranium in Poland: Resources and Recovery from Low-Grade Ores

Uranium (VI) Recovery from Black Shale Leaching Solutions Using Ion Exchange: Kinetics and Equilibrium Studies

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