RECOVERY OF RHENIUM FROM SOLUTIONS USING CHITOSAN AND PROSPECTS FOR AMMONIUM PERRHENATE PRODUCTION

Combining sorption and desorption stages offers a promising approach to concentrating rhenium from industrial process solutions and subsequently recovering it as ammonium perrhenate. This work discusses the mechanism of perrhenate binding through the amino groups of chitosan, sorbent regeneration, and the physicochemical charac-terization of the rhenium-containing product. The proposed approach involves transferring rhenium from the solu-tion to the polymer phase and then to an enriched eluate.

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