SORPTION EXTRACTION OF RHENIUM BY DIFFERENT IONITES FROM URANIUM SORPTION COLUMNS

Abstract

This text discusses the importance of rhenium in modern science and technology, particularly its significance in various production spheres due to its properties. The purpose of this work is extracting rhenium is the mother liquors of uranium production.However, due to its low concentration in raw materials, research into more advanced extraction methods is necessary. One such method is sorption extraction of rhenium.Currently, extensive research is being conducted to obtain highly effective sorbents for rhenium. Among the most promising are ion-exchange resins such as Purolite A660/4759, Puromet MTS9300, SQD 201U, and Biolite 200U. Conditions for rhenium sorption using these resins from standard, model, and mother solutions under various acidity levels have been studied, along with conditions for desorption of this metal from the sorbents.The latter two, SQD 201U and Biolite 200U, demonstrated high efficiency. Conclusion.They exhibited high rhenium sorption results from acidic solutions, showing high selectivity in both sorption and desorption concerning rhenium. Their sorption capacity for rhenium in strongly acidic solutions exceeded 21 mg/g. When sorbing from model and mother solutions, these sorbents showed a rhenium sorption degree exceeding 60%. During desorption, the rhenium desorption degree from these sorbents using a mixture of acids reached values higher than 85%.Therefore, ion-exchange resins SQD 201U and Biolite 200U perform well in industrial solution conditions, allowing their use in extracting rhenium from uranium mother liquors.