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Pembuatan Biodisel dari Minyak Jarak dengan Metode TransesterifikasI Menggunakan Etanol Teknis dan Metanol PA Saripah sobah; Muhammad Naufal Ariq H; Siahaan Theresia
Jurnal Teknik Juara Aktif Global Optimis Vol. 1 No. 1 (2021): June
Publisher : STTI Bontang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (925.236 KB) | DOI: 10.53620/jtg.v1i1.8

Abstract

Increased fuel use can lead to air pollution and other environmental impacts. Substitution of fuel Oil with environmentally friendly fuel alternatives is one solution. Castor oil (Jatropha curcas L) contained in castor seeds can be processed into biodiesel with transesterification process. The most widely used alcohol in the manufacture of biodiesel is methanol. Methanol is made from a material that is not renewable. While ethanol from renewable materials and pure ethanol are expensive. In this study used campurn ethanol to reduce the use of methanol. The purpose of this study is to find out the optimum comparison of methanol-ethanol. The manufacture of biodicells is carried out by a 2-stage process, namely the esterification process and the transesterification process. The esterification process uses HCL catalysts. The transesterification process uses a comparison of methanol and ethanol with variations of 3:1,2:1,1:1,1:2 and 1:3. The catalyst used in the transesterification process is KOH 0.1%. The results showed that the optimum condition in the use of methanol: Technical Etahol is 2:1 within 30 minutes, yielding a yield of 56.1%. The quality test score of type weight and viscosity shows a value of 0.86-0.89 g/mL and 2.9-3.5 so that the results of the study are declared to pass the product test with density and viscosity test standards
Kinetika Reaksi Gasifikasi Arang Batubara Bituminus dengan Gas CO2 Saripah sobah
Jurnal Teknik Juara Aktif Global Optimis Vol. 2 No. 1 (2022): June
Publisher : STTI Bontang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (367.579 KB) | DOI: 10.53620/jtg.v2i1.58

Abstract

Penelitian ini bertujuan untuk mendapatkan data kinetika reaksi gasifikasi arang batubara bituminus yang berasal dari Kalimantan Timur menggunakan gas CO2. Penelitian dilakukan pada kondisi atmosferik menggunakan reaktor fixed bed pada rentang suhu 700oC – 900oC. Batubara dengan ukuran 4 - 5,6 mm dipirolisis pada suhu 700oC selama 90 menit dengan laju pemanasan 20oC/menit. Arang batubara hasil pirolisis seberat 10 gram selanjutnya digasifikasi dengan laju pemanasan tetap yaitu 20oC/menit pada suhu 700oC, 750oC, 800oC, 850oC dan 900oC. Variabel yang dipelajari adalah suhu reaksi dan waktu. Kinetika reaksi gasifikasi arang batubara dengan gas CO2 dapat didekati dengan model shrinking unreacted core. nilai k dengan parameter energi aktivasi dan faktor frekuensi sebesar 61,73 kJ/mol dan 1,37/menit.
Co-Authors Muhammad Naufal Ariq H Siahaan Theresia