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Recovery of Rhodium(III) from nitric acid solutions using adsorbent functionalized with ${it N,N,N}$-trimethylglycine

Suzuki, Tomoya; Morita, Keisuke ; Sasaki, Yuji  ; Matsumura, Tatsuro  

In a previous study, we found that AMP03 adsorbs Rh(III) from the HNO$$_{3}$$ solution with pH = 1.7 - 2.2. In this study, to understand the Rh(III) adsorption properties of AMP03 and clarify conditions for efficient recovery, we investigated the adsorption behaviors of Rh(III) from the HNO$$_{3}$$ solution. As a result, it was found that Rh(III) is effectively adsorbed from aqueous solution containing low H$$^{+}$$ and high NO$$_{3}$$$$^{-}$$ concentration. Considering the adsorption mechanism of Rh(III), we found that Rh$$^{3+}$$ in aqueous solution is adsorbed with two betaine groups in AMP03 and three NO$$_{3}$$$$^{-}$$.

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Category:Chemistry, Multidisciplinary

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