Complex Extraction of Metals in an Aqueous Two-Phase System Based on Poly(Ethylene Oxide) 1500 and Sodium Nitrate

Molecules

InnaV. Zinov’eva¹  ElenaS. Tokar¹  AndreyA. Voshkin¹  YuliaA. Zakhodyaeva¹ 

[1] Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky Prospect, Moscow 119991, Russia;

关键词: aqueous two-phase systems;    metal extraction;    liquid-liquid equilibria;    spent ni-mh battery;    e-waste;    poly(ethylene oxide);    sodium nitrate;   

DOI  :  10.3390/molecules24224078

来源: DOAJ

【 摘 要 】

This article presents an ecologically safe aqueous two-phase system based on poly(ethylene oxide) with a molecular weight of 1500, designed for complex extraction of Ni(II), Co(II), Fe(III), Mn(II), Zn(II), Cu(II), and Al(III) from nitrate solutions. A kinetic dependence has been investigated for a distribution ratio for the metals examined. The influence of pH-values, temperature, initial metal concentration, and nitric acid content have on the extraction of a wide range of metals in the heterogeneous poly(ethylene oxide) 1500-NaNO₃-H₂O system has been discovered. As a result, the complex extraction of metals (E_Me > 60%) was achieved in one step of extraction without introducing additional chemicals into the system.

【 授权许可】

Unknown