Anni Anggraeni

Analysis and Separation Chemistry Laboratory, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Padjadjaran University, Sumedang, Indonesia

Publications

Research Article
Preparation of Liquid Emulsion Membranes for Separation of Gadolinium(III) from Samarium(III) with Tributyl Phosphate or Di-(2-Ethylhexyl) Phosphoric Acid Extraction Based on Emulsion Stability
Author(s): Handias Meilinda*, Husein H. Bahti, Anni Anggraeni and Syulastri Effendi

Separation and purification of Rare Earth Elements (REEs) from their mixture are is not easy, because of their similar physico-chemical properties. Therefore, efforts to separate and purify them by the Emulsion Liquid Membrane (ELM) because of their simplicity, effectivity and efficiency. In this study, the emulsion was made by mixing Span-80 as a surfactant, the Tributylphosphate (TBP) or Di-2-Ethylhexylphosphate (D2EHPA) as extractants in N-Hexane, and Nitric Acid as the internal phase, followed by extraction with a mixture of Gd(III) and Sm(III) in nitric acid as an external phase. The emulsion was made using an experimental design with a two-level factorial design method to select parameters that had a significant influence on the response of swelling ratios and creaming number in the separation of Gd(III) from Sm(III). The results of the study showed that .. Read More»

Abstract PDF