1. Extraction of scandium from aqueous solution in a rotating microchannel reactor.
- Author
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Duan Liu, Gaoxiang Chen, Zini Guo, Sanxing Li, and Jianhong Luo
- Subjects
MICROREACTORS ,LIQUID-liquid extraction ,AQUEOUS solutions ,MASS transfer coefficients ,SOLVENT extraction ,SCANDIUM ,FLOW velocity - Abstract
Scandium, as a typical dispersed element, plays an important role in modern technology. The liquid-liquid microextraction of scandium from an aqueous solution is carried out with C
16 H35 O3 P (EHEHPA) as the extraction agent with kerosene as the diluent. The effects of pH of an aqueous solution, outer-inner rotor distance (D), the height of inner rotor (H), speed of the inner rotor (R), the flow velocity of the organic phase (QO ), and the ratio of organic phase to the aqueous phase (O/A) on extraction efficiency, mass transfer coefficient and equilibrium mechanism of Sc3+ are analyzed investigated. The results of this study revealed that the removal rate of Sc3+ in the aqueous phase reaches more than 97%. To investigate the influence of NaOH concentration on the extraction process, NaOH solution is selected as a stripping agent for reverse extraction of the loaded organic phase. [ABSTRACT FROM AUTHOR]- Published
- 2022
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