Recovery of Sc³⁺ from Red Mud Leaching Solution by Emulsion Liquid Membrane

Abstract:

In this paper, recovery of scandium from red mud leaching solution by emulsion liquid membrane (ELM) was studied. Composition of ELM is P507+ span80 + sulfonated kerosene + HCl. Effects of mobile carrier and surfactant concentration, Roi, Rwe, internal and external aqueous phase acidity on the extracting rate of Sc³⁺ were studied. Results show that it is feasible for ELM extracting Sc³⁺ from the red mud leaching solution. The optimum condition for ELM extracting scandium from the red mud is P507%=8%, Span80%=7%, Roi=2:3, Rwe=6, internal aqueous c(HCl)=2 mol/L, external aqueous phase pH=2. The extracting rate of Sc³⁺ can reach to 98% under optimal condition.

• Periodical: Advanced Materials Research (Volumes 335-336)
• Pages: 1465-1468
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.335-336.1465
• Online since: September 2011
• Authors: Cui Zhen Wang, Guang Zhu Zhou, Xiao Yan Kou, Zi Long Zheng
• Keywords: Emulsion Liquid Membrane, P507, Red Mud, Scandium

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DOI: 10.1016/s0927-7757(98)00505-6