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All Journal CAKRA KIMIA (Indonesian E-Journal of Applied Chemistry) CHEMISTRY PROGRESS JURNAL KIMIA SAINS DAN APLIKASI Jurnal Pengabdian Kepada Masyarakat Universitas Bangka Belitung Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir Jurnal Kimia Mulawarman IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Al-Kimia SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Chemistry Indonesian Journal of Chemical Research Martabe : Jurnal Pengabdian Kepada Masyarakat AGROMIX ALKIMIA : Jurnal Ilmu Kimia dan Terapan Stannum : Jurnal Sains dan Terapan Kimia Journal of Instructional and Development Researches Jurnal Pijar MIPA Asian Journal of Health and Applied Sciences Jurnal Riset Fisika Indonesia Dharma Pengabdian Perguruan Tinggi (DEPATI) Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir
Nurhadini Nurhadini
Jurusan Kimia, Fakultas Teknik, Universitas Bangka Belitung
Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Separation of Thorium (Th) from Monazite Sand of Bangka Island using Primene JMT Solvent Extraction Method Claudia, Dita; Fabiani, Verry Andre; Nurhadini, Nurhadini; Prassanti, Riesna
EKSPLORIUM Vol. 44 No. 2 (2023): NOVEMBER 2023
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/eksplorium.2023.6480

Abstract

Thorium is an essential element as an alternative nuclear fuel to replace uranium. Thorium is found in the mineral monazite, which is a by-product of the alluvial tin mining process. Many methods have been used to extract and separate thorium from uranium and REEs from monazite, one of which is the organic solvent extraction method. In this research, the primene JMT, which is an extractant of primary amine compounds, was used in the method. The studied parameters are feed pH, JMT primene concentration, and stirring speed. The results show that the optimum conditions for Th extraction in monazite using solvent extraction method primene JMT were obtained at pH 0.5, extractant concentration of 2%, and stirring speed of 300 rpm with Th recovery of 94.05% while U and REE were not extracted.
SINTESIS α-TERPINEOL DARI MINYAK ATSIRI TUMBUHAN SAPU-SAPU DENGAN MENGGUNAKAN KOMBINASI KATALIS ASAM ALAMI BUAH JERUK KUNCI DAN ASAM SINTETIS Ependi, Eresti; Roanisca, Occa; Nurhadini, Nurhadini
Stannum : Jurnal Sains dan Terapan Kimia Vol 7 No 2 (2025): October 2025
Publisher : Department of Chemistry - Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/76wtwt95

Abstract

Synthesis is an integration of two or more existing elements to produce a new result. Key orange (Citrus x microcarpa Bunge) is a Bangka Belitung plant that contains citric acid with a high acidic taste. Its high acidic nature can be used as a catalyst that can accelerate the reaction rate in synthesizing an α-terpineol compound from α-pinene contained in broomstick essential oil. The synthesis of α-terpineol can be done using combined and uncombined catalysts, namely 15% sulfuric acid, 99.5% acetic acid and natural citric acid from key lime juice. This study aims to determine the optimum composition of the catalyst combination of sulfuric acid, acetic acid and key lime juice in synthesizing α-terpineol compounds and the level of α-terpineol produced from the synthesis. The optimum result of the combination of catalysts that can synthesize α-pinene into α-terpineol quite well is using 15% sulfuric acid as much as 1 ml, 99.5% acetic acid as much as 1 ml and citric acid from key orange juice as much as 3 ml. The results of α-terpineol content of each catalyst are Product 1 by 33.14%, Product 2 by 6.36%, Product 3 by 1.00%, Product 4 by 17.32% and Product 5 by 18.43%.
Co-Authors Adi Syahputra Adisyahputra, Adisyahputra Amelia Narulita Anggraeni Anggraeni Ayu Ratna Sari Azizah, Qothrunnada Nur Claudia, Dita Devi Valeriani Dinda Liyana Eka Sari Wijianti Ependi, Eresti Eva Helda Evahelda Evahelda Fahmi Rizal Fajar Indah Puspita Sari Fardhan Arkan Fransiska, Destalia Fuaddudin, Fuaddudin Herry Marta Saputra I Made Arcana Imelda Hotmarisi Silalahi Jurian Jurian Karnelasatri, . Ken Ayu Ken Ayu Khairudin Khairudin Layal, Kamalia Lesta Lesta Lestari, Iin Megawati Ayu Putri Mimi Mawaddah Nadia Nadia Narulita, Amelia Ndruru, Sun Theo Constan Lotebulo Putri, Megawati Ayu Qothrunnada Nur Azizah Rezalia Annisa Riesna Prassanti Ristika O Asriza Ristika Oktavia Asriza Rizka Felly Roanisca, Occa Robby Gus Mahardika Robiana, Sella Rufti Puji Astuti Saparin, Saparin Sari Wulan Sari, Ratih Puspita Shania Sakhila Sitti Nurul Aini Sri Rizki Pratiwi Syarmila Syarmila Syifa Aulia Permata Sari Verry Andre Fabiani Widodo Budi Kurniawan Yunilita Hanum Zulfa Mawaddah