Adsorptive separation of palladium from a simulated nuclear waste solution with activated carbon fibers

作者：Moon Jei Kwon^*; Jung Chong Hun; Lee Byung Chul; Shin Chae Ho

来源：Separation Science and Technology, 2008, 43(3): 567-581.

DOI：10.1080/01496390701784146

• carbon fibers
• adsorption
• palladium
• chemical treatment

Adsorptive separation of palladium from a nitric acid solution was performed by using a pitch-based activated carbon fiber modified with NaOH (NaOH-ACF). The NaOH-ACF showed a markedly improved adsorption performance for the palladium ions as compared with the untreated ACF. It also showed a much higher preferential adsorption for the palladium ion over the rhodium and rhenium ions. The equilibrium capacity of the NaOH-ACF for palladium was 1.25 meq . g(-1). The breakthrough behavior obtained by using the bed packed with the NaOH-ACF showed a complete separation of palladium from the coexisting ions of rhodium and rhenium. The spent bed was eluted effectively with nitric acid and a palladium nitrate with a purity of higher than 99% could be recovered.

• 出版日期2008-2