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All Journal Aceh International Journal of Science and Technology JURNAL REKAYASA KIMIA & LINGKUNGAN
Surya Lubis
Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Syiah Kuala
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Energy Engineering

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Inorganic Solid Catalyst Derived from Fishbone Waste (Katsuwonus pelamis) for Transesterification of Coconut Oil into Biodiesel Maisarah, Siti; Maisarah, Minnati Rana; Satrina, Dini; Lubis, Surya; Mitaphonna, Rara; Febriani, Febriani; Novita, Desi; Ramli*, Muliadi
Aceh International Journal of Science and Technology Vol 12, No 3 (2023): December 2023
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.12.3.33824

Abstract

This research has utilized fish bone wastes of tuna (Katsuwonus pelamis) collected at the Lampulo fish market in Banda Aceh. Inorganic oxides have been derived from those fish bone wastes through the decomposition method at high temperatures, namely the calcination process in air atmosphere at 900C for 4 hours. The physicochemical properties of obtained inorganic oxides were characterized using XRD and SEM-EDS techniques. The characterization results indicated that the composition of the calcined fish bone contained hydroxyapatite, CaCO3, and CaO, in which the hydroxyapatite phase has been the major component. Furthermore, the calcination process positively impacts improving the physical morphology and crystalline phase of inorganic oxides. Finally, those obtained inorganic catalysts based on fish bone waste have been applied for transesterifying Coconut oil with methanol, resulting in three main compounds: trimethyl borate, methyl laurate, and methyl octanoate.
Preparasi Bentonit Terpilar Alumina dari Bentonit Alam dan Pemanfaatannya sebagai Katalis pada Reaksi Dehidrasi Etanol, 1-Propanol serta 2-Propanol Lubis, Surya
Jurnal Rekayasa Kimia & Lingkungan Vol 6, No 2 (2007): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

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Abstract

Penelitian tentang modifikasi bentonit dari Kuala Dewa, Aceh Utara menjadi bentonit terpilar alumina dan uji aktivitasnya pada reaksi dehidrasi etanol, 1-propanol dan 2-propanol telah dilakukan. Bentonit alam (Ca-bentonit) dimodifikasi melalui proses pertukaran kation menjadi Na-bentonit dan H-bentonit, kemudian dipilarisasi menggunakan AlCl3 dan NaOH menghasilkan bentonit terpilar alumina. Bentonit terpilar alumina yang diperoleh mempunyai luas permukaan spesifik (72,42 m2/gram) yang lebih besar dibanding dengan bentonit tidak terpilar. Uji aktivitas katalitis bentonit terpilar alumina pada reaksi dehidrasi etanol, 1-propanol dan 2-propanol dilakukan pada suhu 200C - 400C. Suhu optimum reaksi dehidrasi etanol, 1-propanol dan 2-propanol menggunakan katalis bentonit terpilar alumina berturutturut adalah 250, 400 dan 200C dengan konsentrasi dietil eter 25,44; 2,31 dan 3,29%. Aktivitas katalis bentonit terpilar alumina pada reaksi dehidrasi alkohol sesuai dengan urutan etanol lebih besar dari 2-propanollebih besar dari 1-propanol.Kata kunci: bentonit terpilar alumina, dehidrasi, etanol, 1-propanol, 2-propanol
Preparasi Katalis Cu/Silika Gel dari Kristobalit Alam Sabang serta Uji Aktivitasnya pada Reaksi Dehidrogenasi Etanol Lubis, Surya
Jurnal Rekayasa Kimia & Lingkungan Vol 7, No 1 (2009): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

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Abstract

Cu/Silica gel catalyst preparation by using silica content which is obtained from Sabang natural crystobalit has been done. Isolated silica from crystobalit is reacted with natrium hidroxide to produce silicate natrium that reacted further with sulphate acid to produce silica gel. Silica gel is characterized by infra red spektroscopy dan BET test. BET test result showed that silica gel obtained has specific surface area 260,04 m2/gram and ion Cu impregnation into silica gel pores produce Cu/silica gel catalyst with spesific surace area 158,53 m/gram ith Cu2+ metal content = 193 ppm. Catalyst activation test Cu/silica gel at dehidrogenation reaction of etanol to produce asetaldehide was done at temperature 100oC 300oC. Reseach showed that the highest asetaldehide consentration (20,24%) is obtained at temperature 300oC. Keywords: asetaldehide, crystobalit, Cu/silica gel, dehidrogenation, ethanol
Co-Authors Febriani Maisarah, Minnati Rana Maisarah, Siti Mitaphonna, Rara Ramli*, Muliadi Satrina, Dini