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All Journal Bionatura Indonesian Journal of Applied Sciences Chimica et Natura Acta Indonesian Journal of Chemistry Jurnal Riset Sains dan Kimia Terapan Jurnal Ilmiah Berkala: Sains dan Terapan Kimia al Kimiya : Jurnal Ilmu Kimia dan Terapan Journal of Tropical Pharmacy and Chemistry Kimia Padjadjaran
R. Ukun M.S. Soedjanaatmadja
Departemen Kimia, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Padjadjaran
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Environmental Science Health Professions Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology

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Understanding The Role of Diffusion in The Separation of Rare Earth Elements in Water-n-hexane Systems: A Molecular Dynamics Simulation Study Hardianto, Ari; Janitra, Regaputra Satria; Fauzi, Muhammad Ryan; Juliandri, Juliandri; Anggraeni, Anni; Soedjanaatmadja, Ukun Mochammad Syukur
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol. 10 No. 2 (2023): al Kimiya: Jurnal Ilmu Kimia dan Terapan
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v10i2.30680

Abstract

Liquid-liquid extraction is one of the methods for separating rare earth elements (REE) in the presence of an extractant. The separation of REE ions, complex with an extractant, involves interfacial migrations that are influenced by the diffusion of the respective ions. Therefore, we performed molecular dynamics simulations on REE ions (La3+, Sm3+, Eu3+, Gd3+, and Tb3+) in a water-n-hexane system to determine if each ion exhibited a distinct diffusion coefficient. By employing molecular dynamics simulations, we calculated diffusion coefficients for these ions based on the Einstein relation. The diffusion coefficients for La3+, Sm3+, Eu3+, Gd3+, and Tb3+ were found to be 4.21×10–6, and 3.96×10–6, 4.57×10–6, 4.17×10–6, and 5.19×10–6 cm2/s, respectively. However, statistical analysis via the Kruskal-Wallis test revealed no significant variance in the diffusion coefficients (p-value greater than 0.05), indicating that diffusion is not a rate-limiting factor in REE separation. The findings suggest that effective mixing during extraction can eliminate the role of diffusion as a differentiating factor in REE separation. Overall, this study offers critical insights into optimizing REE extraction processes
Co-Authors Abdul Muis Abdul Mutalib Abdul Mutalib Abdul Mutalib Abdul Mutalib Ace Tatang Hidayat Ade Sholeh Hidayat Agus Safari Amin Setiawan - Anggraeni, Nenden Indrayati Anni Anggraeni Anni Anggraeni Anni Anggraeni Anni Anggraeni, Anni Ari Hardianto Astrid, Dewi Bayu Shiddiq Widhi Pratama Devi, Puspitasari Rosiana Dewi Astrid DWIRYANI ARIZONA Erianti Siska Purnamasari Fadhlillah, Muhammad Fahruddin, Muhammad Fahmi Fauzi, Muhammad Ryan Febrianti, Inky Fitriani Fitriani Ginting, Sani D. R. Br Hafiz, Ersanda Herman Herman Hidayat, Ade Sholeh Horasio, Debora Tamaris Husein Hernadi Bahti Ika Wiani IMAN PERMANA MAKSUM IMAN PERMANA MAKSUM Iman Permana Maksum Iman Rahayu Inky Febrianti Janitra, Regaputra Satria Juliandri Juliandri Linda Septiana Linda Yuniar Martalena Ramli Muhammad Yusuf Muhammad Yusuf Mukhtari, Zakiyah Mulyasari, Rita Nurrusyda, Fajriana Shafira O. Suprijana - Pusaka, Semerdanta Rachman, Saadah Diana Retna Putri Fauzia Rita Mulyasari Saadah Diana Rachman Saadah Diana Rachman Safri Ishmayana Safri Ishmayana Saryono Shabarni Gaffar Supriyatna Supriyatna Syafruddin Syafruddin Syamsiar, Syamsiar TATI NURHAYATI Umi Baroroh Yurika Sastyarina Yurika Sastyarina Zakiyah Mukhtari Zuhrotun Nafisah Zuhrotun Nafisah