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All Journal Mechanical Engineering for Society and Industry
Rudi Siswanto
Lambung Mangkurat University, Indonesia
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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Igniting the flame, maximizing energy: The effectiveness of nutmeg oil as a bioadditive in B20 droplet combustion Rachmat Subagyo; Mastiadi Tamjidilah; Abdul Ghofur; Rudi Siswanto; Ma'ruf Ma'ruf; Wardoyo Wardoyo; Muchsin Muchsin; Purnomo Purnomo; Atma Cahyo Anggono; Faisal Fadillah; Anugrah Perdana Putra
Mechanical Engineering for Society and Industry Vol 5 No 2 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.14499

Abstract

This study aims to experimentally investigate the effect of adding nutmeg oil (Myristica fragrans) as a bioadditive on the combustion characteristics of Biosolar B20 fuel droplets, addressing its inherent drawbacks such as longer ignition delay and incomplete combustion. Nutmeg oil iss selected due to its high oxygenated compound content and potential to enhance combustion efficiency and ignition quality. Key parameters examined include ignition delay time, combustion duration, burning rate, flash point, flame height, and peak temperature during the combustion process. Nutmeg oil was added in volumes ranging from 1 to 5 mL to the B20 mixture, and the combustion experiments were carried out using a droplet-based method to observe ignition and burning behavior under controlled conditions. The results showed that the addition of nutmeg oil significantly reduced the ignition delay time from 6.74 seconds (pure B20) to 1.38 seconds (5 mL nutmeg oil), along with decreases in combustion duration and flash point. Conversely, the burning rate increased from 0.53 mm²/s to 1.04 mm²/s, and the maximum temperature rose from 409.4°C to 553.3°C. GC-MS analysis revealed an increase in active volatile compounds such as α-pinene and myristicin, which enhanced the combustion process. ANOVA and Tukey HSD statistical tests confirmed that the differences among treatments were statistically significant (p < 0.05). Overall, this study highlights the potential of nutmeg oil–blended B20 fuel for practical engine applications and its contribution to sustainable energy development.
Utilization of rice husk ash waste and scrap aluminum as composite materials fabricated by evaporative casting Rudi Siswanto; Rachmat Subagyo; Mastiadi Tamjidillah; Mahmud Mahmud; Sigit Aji Setiawan
Mechanical Engineering for Society and Industry Vol. 4 No. 2 (2024)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.12505

Abstract

To achieve environmental sustainability, the integration of waste materials into new production processes is essential. This study investigates the development of aluminum matrix composites (AMCs) reinforced with rice husk ash (RHA) using the evaporative casting method. This study focuses on the effects of aluminum scrap-RHA composition, casting temperature, and styrofoam pattern thickness on key physical and mechanical properties such as fluidity length, surface roughness, hardness, and porosity. The composite material from aluminum scrap electrical cables and rice husk ash was heated in a furnace at a temperature of 900 °C for 2 hours with a sieve size of 200 mesh. The pattern material is styrofoam from electronic equipment packaging. The molding sand used is local silica sand with a sieve size of 60 mesh. The melting furnace uses a crucible furnace type with used oil as fuel. The independent variables were Al-RHA composition (100:0, 95:5, 90:10) %, pouring temperature (650 °C, 700 °C, and 750 °C), and Styrofoam pattern thickness (1, 2, 3, 4, 5, 6, and 10) mm. The results showed that the pouring temperature and the composition ratio of Al-RHA affected the fluidity length, surface roughness, hardness, and porosity, showcasing the potential of using waste materials in cost-efficient and environmentally sustainable composites for various industries.
Co-Authors Abdul Ghofur Anugrah Perdana Putra Atma Cahyo Anggono Faisal Fadillah Ma'ruf Ma'ruf Mahmud Mahmud Mastiadi Tamjidilah Mastiadi Tamjidillah Muchsin Muchsin Purnomo Purnomo Rachmat Subagyo Sigit Aji Setiawan Wardoyo Wardoyo