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All Journal Machine : Jurnal Teknik Mesin Scientific Journal of Mechanical Engineering Kinematika
Farid Majedi
State Polytechnic of Madiun
Automotive Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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ENHANCEMENT OF BIOETHANOL FUEL PROPERTIES FROM CIU GUMAYUN THROUGH ADSORPTIVE DISTILLATION WITH NATURAL ZEOLITE AND SILICA GEL Farid Majedi; Galih Satrio; M. Shafwallah Al Aziz R.
Scientific Journal of Mechanical Engineering Kinematika Vol 11 No 1 (2026): SJME Kinematika June 2026
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v11i1.793

Abstract

Bioethanol as an alternative energy source for fossil energy conversion. A potential source of bioethanol is Ciu Gumayun, a liquor with 25% alcohol content, which can be purified through adsorptive distillation using natural zeolite and silica gel as water adsorbents. The study aimed to determine the effects of adsorbent variations on the alcohol, water, and calorific value of bioethanol using a multistage adsorptive distillation process at 78°C with 2 liters of Ciu and 70 grams of adsorbent in each distillate. The results of the natural zeolite adsorption distillate: alcohol content of 67%, 79%, 88%, and 92%, with a final volume of 162 ml. In the silica gel adsorption distillate, alcohol content: 68%, 79%, 86% and 92%, with a final volume of 170 ml. The water content of both natural zeolite and silica gel distillates was 8%, with water volumes of 12.96 ml for natural zeolite distillate and 13.6 ml for silica gel distillate. The calorific value was 24,147 J/g for natural zeolite distillate and 24,704 J/g for silica gel distillate. From the alcohol content, water content, and calorific value, silica gel proved to be more effective in the adsorptive distillation process.
Yupi PENGARUH VARIASI TEMPERATUR DAN KATALIS ZEOLIT TERHADAP KARAKTERISTIK BIO-OIL DARI PIROLISIS LIMBAH LDPE, BAN, BAMBU Farid Majedi; Yupi Eka Indriana; Indah Puspitasari
Machine : Jurnal Teknik Mesin Vol 11 No 2 (2025): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Sains dan Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/r9dz6810

Abstract

The problem of dwindling fossil fuels, waste in Winongo landfill, Madiun which is over capacity. An alternative energy (renewable) is needed, which can be produced from waste as an alternative fuel to replace fossil fuels, one of which is pyrolysis. Pyrolysis is the process of thermochemical decomposition of organic materials through heating without or little oxygen to produce gaseous, liquid (tar), and charcoal products. Natural zeolite is used as a catalyst in the pyrolysis process to convert short hydrocarbon chains into longer hydrocarbon chains. The pyrolysis process uses a pyrolysis device with a rotary kiln model with electric heater heating. This research process uses a total raw material weighing 500 grams including 50% LDPE plastic waste, 25% used tires, and 25% used bamboo with the variables used in this study are temperature variations of 250°C, 300°C, 400°C, 500°C, and 600°C and the addition of 2 natural zeolite catalyst baffles weighing 83.3 grams in each baffle, with a process of 3 hours. Bio-oil volume data was taken every 3 minutes, density and calorific value were studied when the pyrolysis process was complete. The test results showed the highest volume of bio-oil (tar) at 400°C was 261 ml, the lowest density at 600°C was 0.798 g/ml, and the highest calorific value at 500°C was 54,233 Cal/gr.
Co-Authors Galih Satrio Indah Puspitasari M. Shafwallah Al. Aziz. R Yupi Eka Indriana