Solvent Extraction and Stripping of Gadolinium (III) from Samarium (III) and Europium (III) Using D2EHPA as Extractant

Diana Hendrati; Husein Bahti; Uji Pratomo; Chindy Wulandari; Retna Fauzia; Santhy Wyantuti

Proceedings of the 1st International Conference on Islam, Science and Technology, ICONISTECH 2019, 11-12 July 2019, Bandung, Indonesia.

Research Article

Solvent Extraction and Stripping of Gadolinium (III) from Samarium (III) and Europium (III) Using D2EHPA as Extractant

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@INPROCEEDINGS{10.4108/eai.11-7-2019.2297444,
    author={Diana  Hendrati and Husein H. Bahti and Uji  Pratomo and Chindy  Wulandari and Retna Putri Fauzia and Santhy  Wyantuti},
    title={Solvent Extraction and Stripping of Gadolinium (III) from Samarium (III) and Europium (III) Using D2EHPA as Extractant},
    proceedings={Proceedings of the 1st International Conference on Islam, Science and Technology, ICONISTECH 2019, 11-12 July 2019, Bandung, Indonesia.},
    publisher={EAI},
    proceedings_a={ICONISTECH},
    year={2021},
    month={1},
    keywords={rare earth metals extraction stripping d2ehpa ligand},
    doi={10.4108/eai.11-7-2019.2297444}
}

Diana Hendrati
Husein H. Bahti
Uji Pratomo
Chindy Wulandari
Retna Putri Fauzia
Santhy Wyantuti
Year: 2021
Solvent Extraction and Stripping of Gadolinium (III) from Samarium (III) and Europium (III) Using D2EHPA as Extractant
ICONISTECH
EAI
DOI: 10.4108/eai.11-7-2019.2297444

Diana Hendrati¹, Husein H. Bahti¹, Uji Pratomo¹, Chindy Wulandari¹, Retna Putri Fauzia¹, Santhy Wyantuti¹^,*

1: Department of Chemistry, Faculty of Mathematics and Science, University of Padjadjaran Jalan Raya Bandung Sumedang KM.21, West Java, Indonesia

*Contact email: santhy.wyantuti@unpad.ac.id

Abstract

Separation and purification of rare earth metals are still the major problem because of similar physical and chemical properties. Among various method, extraction and stripping are the most successful method for the separation of rare earth metals. In this study, we focused on separation of gadolinium from samarium and europium by extraction-stripping gradually methods using ligands di-2-ethylhexyl phosphoric acid (D2EHPA) extractant. The gadolinium, samarium and europium sample solutions were extracted using a ligand D2EHPA in n-hexane solvent and then were analyzed by ICP-OES to determined the distribution coefficient (Kd) of each complexes. Then, we performed the extraction-stripping of gadolinium from samarium and gadolinium from europium by using D2EHPA ligand in n-hexane solvent and nitric acid 6 M as the stripping agent. The efficiency of extraction were 81.23 % for Gd , 68.97 % for Sm, and 34.9 % for Eu. The efficiency of stripping were 36.2 % for Gd , 41.8 % for Sm and 83.6 % for Eu.

Keywords: rare earth metals extraction stripping d2ehpa ligand

Published: 2021-01-12
Publisher: EAI

: http://dx.doi.org/10.4108/eai.11-7-2019.2297444