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All Journal Fullerene Journal of Chemistry Musamus Journal of Science Education
Abraham Laurens Rettob
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Chemistry Education Physics

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Identifikasi Karakter Lempung Alam (Clay) Distrik Sota Merauke John Yoro Parlindungan; Abraham Laurens Rettob
Musamus Journal of Science Education Vol 4 No 2 (2022): Musamus Journal of Science Education (MJOSE)
Publisher : Faculty of Teacher Training and Education, Musamus University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35724/mjose.v4i2.4155

Abstract

Keberadaan dan kelimpahan lempung alam (clay) di kabupaten Merauke sampai saat ini belum di manfaatkan dengan maksimal. Hal ini disebabkan karena kurang atau bahkan belum adanya penelitian dan informasi tentang karakteristik lempung alam tersebut. Lempung alam merupakan salah satu mineral alam yang mengandung silika dan partikelnya berukuran kurang dari dua mikrometer. Penelitian lempung alam Merauke dari Distrik Sota bertujuan untuk mendapatkan data awal berupa karakter fisika dan kimia karena selama ini belum ada kajian terkait hal itu. Lempung alam akan dipreparasi selanjutnya akan diidentifikasi karakternya menggunakan instrumen. Karakterisasi yang dilakukan meliputi kekristalan menggunakan X-ray Difractometer (XRD) dan analisa morfologi permukaan dengan Scanning Electron Microscope (SEM). Hasil karakterisasi menunjukan komposisi mineral kimia utama pada pada lempung asal distrik Sota adalah Illite dan silika Quartz.
Characterization of Clay from Merauke Regency and Its Utilization as an Adsorbent of Free Fatty Acids in the Purification of Waste Cooking Oil Muhammad Rasyiid Maulana; John Yoro Parlindungan; Abraham Laurens Rettob; Lamtiar Ferawaty Siregar; Hendro Hitijahubessy
Jurnal Kimia Fullerene Vol 10 No 2 (2025): Fullerene Journal Of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/fjc.v10i2.747

Abstract

This study investigates the characterization and application of natural clay from Merauke as an adsorbent for the purification of waste cooking oil. The clay was characterized using X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) before and after acid activation. XRD analysis revealed quartz as the dominant mineral, while acid activation caused partial dissolution of layered silicates, leading to structural modifications without affecting quartz stability. SEM images confirmed morphological changes from compact aggregates with limited pores to rougher surfaces with larger and more interconnected pores, indicating increased surface area and porosity. Adsorption experiments demonstrated that both natural and acid-activated clays reduced free fatty acids (FFA) in waste cooking oil, with the acid-activated clay consistently showing higher efficiency. Prolonged stirring times (1, 3, and 5 hours) further enhanced adsorption, though the reduction rate decreased over time as adsorption sites approached saturation. In addition to lowering FFA levels, the treatment improved the visual quality of the oil by reducing discoloration. These findings highlight that acid-activated clay from Merauke possesses promising potential as a low-cost and effective adsorbent for oil purification and broader environmental remediation applications.
Co-Authors Hendro Hitijahubessy John Yoro Parlindungan Lamtiar Ferawaty Siregar Muhammad Rasyiid Maulana