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Journal : Bulletin of Chemical Reaction Engineering

Optimization and Kinetics of Terbium Leaching from Lapindo Mud using Sulfuric Acid as the Leaching Agent Supriadi, Harry; Suyanti, Suyanti; Astuti, Widi; Handini, Tri; Sujoto, Vincent Sutresno Hadi; Prameswara, Gyan
Bulletin of Chemical Reaction Engineering & Catalysis 2025: BCREC Volume 20 Issue 1 Year 2025 (April 2025)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20252

Abstract

This study investigated the impact of solid/liquid ratio, solvent concentration, temperature, and leaching time on the recovery of rare earth elements (REEs), particularly terbium, from Lapindo mud using sulfuric acid as a leaching agent. The objective was to optimize the leaching conditions and identify the most appropriate kinetic model for describing the extraction process. Leaching experiments were conducted under various solid/liquid ratios, sulfuric acid concentrations, temperatures, and time. The findings revealed that the maximum terbium recovery of 94.51% was achieved at a solid/liquid ratio of 0.5, and 18 M sulfuric acid was used as the leaching agent for the extraction process at 200 °C for 30 minutes. Kinetic analysis proved that the Zhuravlev-Leshokin-Templeman (ZLT) model best described the leaching process. The calculated reaction's apparent activation energy (Ea) was 27.96 kJ/mol, indicating that a combination of chemical reactions and diffusion mechanisms controls the leaching process. These insights are crucial for optimizing the extraction of terbium and other REEs from Lapindo mud, offering significant potential for industrial applications in recovering valuable materials from waste sources. Copyright © 2025 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Co-Authors Abdul Rahim Adilla Syafri, Rista Adistya, Fitri Agatha, Jennifer Agus Prasetya Agus Siswanto Aisyah, Indah Nur Albadri, Albadri Alya Reza Ardhita Amalia, Merlly Amir Mahmud Anik Enikmawati Antriana, Inna Apri Kartikasari Aprilianza, Haikal Arieb Shintami, Rica Ariffendi, Jefri Ariffendi1, Jefri Ariyanto, Eka Nofri Arvita, Yulia Aryani, Lies Ayu Idaningsih Bahrul Ilmi Budiartati, Sri Candraningtias, Widyadhana Cantika, Triana CINDY CINDY damayanti, Etika Devi Siti Rahmah Dian Nur Antika Eky Hastuti Eka Nofri Ariyanto Eky Hastuti, Dian Nur Antika Elisa, Nova Erna Hernawati, Erna Erni Yanti Natalia, Erni Yanti Evitasari, Desi Fadhilah, Syifa Aulia Faizah, Kurniyatul Febriansyah, Muhammad Rafli Feranika, Ayu Fida Rahmantika Hadi, Fida Rahmantika Gulo, Nur’Ainun Gyan Prameswara Handini, Tri Hanifa Septia Nur Aini Harahap, Darmadi Erwin Harry Supriadi Haryaningsih, Sri Hastuti, Dian Nur Antika Eky Hastuty, Lita Indriyadi, Abang Irda Sari Isnaeni, Siti Jamin Safi Joni Devitra, Joni Juan Anthonio Karsiti Karsiti Kusumawati, Adin Indah Lia Natalia, Lia Listiani, Imas Lubis, Nur Kholila Lutfiah Anggun Dwi Rahmawati Ma'rifah, Atun Raudotul Maria Veronica Purwani Marini, Lutfiana Arum Putri Maya Kartika Sari Mikael, Suryadi Monica, Iveren Muhammad Rossy Rachasiwi Mukhlis Mukhlis Mustiah Yulistiani MUSYARROFAH, TAMI MUGHNIATUL natalia, lia natalia Nita Yunianti Ratnasari Novan Ramadhan, Wemphi Nur Hidayah Nur Samsiyah, Nur Nurfia, Yulia Tutik Nurul Marwiyah, Siska Nuryawatilina Ophelia S, Chandy OPHELIA, CHANDY Otis Putri Oktaviani, Pearly Panut Mulyono Po Yuan Wang Prasasti, Laura Purnamasari, Devi Putri Dewi Aulia Putri, Audrey Regina Pratama Rachmawati, Laily Radisti, Mediska Retno Kumalasari Rian Arya Wijaya Richad, Richad Rindy Eka Pratiwi Ritaudin, Ritaudin Rodiyatun Rodiyatun, Rodiyatun Ros Ayu Dewi Rusdianto Roestam Safitri, Rachmah Bayu Safri, Hayanuddin Sari, Melati Permata Sentoso, Antony Seputra, Jeremy Kent Setiana, Nina Setiawati, Wiwik Sholihah, Try Fatmah Siregar, Nurintan Asyiah Sodikin Sodikin Sri Wahyuni Sri Yunita subur subur Sudarto Sudarto Sujoto, Vincent Sutresno Hadi Sukestiyarno Sukestiyarno Sukriadi, Hery Sunta, Mathilda Surya Dharma Suteja, Neneng Euis Citra Intan Tasya, Tasya Tiara Intan Cahyaningtyas Tri Yunis Miko Wahyono Vivi Rulviana Wahyudi, Adinda Aulia Wang, Thalia Wardani, Muhammad Weni Hastuti Widi Astuti Winoto, Gilbert Yanto, Eka Nofri Ari Yohanes, Yulius Yuda Syahidin Yuli Widyastuti Yuswardi yuswardi, Yuswardi Yuwansyah, Yeti Zai, Immanuel