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- W2996554674 abstract "Red mud is a byproduct of alumina refining of bauxite ores, and is a significant source for extracting scandium. However, a large amount of iron in red mud makes it difficult to recover scandium because Fe(III) and Sc(III) have similar physicochemical properties. In this study, a new method was developed for selective separation of iron and scandium in acid leachate of red mud using D201 resin. Theoretical calculations indicate that the ferric species mainly exists as FeCl3 or FeCl4− at chloride concentration above 6.65 mol/L, while scandium still exists as ScCl2+, making it possible to selectively separate iron from scandium through anion resin adsorption. The factors affecting the adsorption of iron and scandium such as chloride concentration, resin dosage, adsorption time, and temperature were evaluated in batch experiments. The Langmuir model was successfully applied to both iron and scandium adsorption, and the maximum adsorption capacities of iron and scandium are 147.06 and 0.95 mg/g, respectively, indicating a significant difference between iron and scandium. Raman analysis further demonstrates that the iron is adsorbed onto D201 resin as FeCl4− anion." @default.
- W2996554674 created "2019-12-26" @default.
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- W2996554674 date "2020-12-01" @default.
- W2996554674 modified "2023-10-15" @default.
- W2996554674 title "Separation and recovery of iron and scandium from acid leaching solution of red mud using D201 resin" @default.
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- W2996554674 doi "https://doi.org/10.1016/j.jre.2019.12.005" @default.
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