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Muhammad Akhlis Rizza
State Polytechnic of Malang, Indonesia
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Mechanical Engineering

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Effects of Eugenol and Cineol Compound on Diffusion Burning Rate Characteristics of Crude Coconut Oil Droplet Helen Riupassa; Suyatno Suyatno; Hendry Y. Nanlohy; Andi Sanata; Trismawati Trismawati; Rachmat Subagyo; Satworo Adiwidodo; Muhammad Akhlis Rizza; Masaki Yamaguchi; Takuya Tomidokoro; Selcuk Sarikoc
Automotive Experiences Vol. 6 No. 1 (2023)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.8150

Abstract

The burning rate of coconut oil droplets has been investigated experimentally by adding bio-additives of clove oil and eucalyptus oil. Tests were carried out with single droplets suspended on thermocouples at room atmospheric pressure, and room temperature and ignited with a hot wire. The addition of clove oil and eucalyptus oil as bio-additives into coconut oil was 100 ppm and 300 ppm, respectively. The droplet combustion method was chosen to increase the contact area between the air and fuel so that the reactivity of the fuel molecules increases. The results showed that the eugenol compounds contained in clove oil and cineol compounds in eucalyptus oil were both aromatic, and had an unsymmetrical carbon chain geometry structure. Furthermore, this factor can potentially accelerate the occurrence of effective collisions between fuel molecules. Therefore the fuel is combustible, as evidenced by the increased burning rate, where the results show that without bio-additives, the burning rate of crude coconut oil (CCO) is about 0.7 seconds. These results are 0.15 to 0.2 seconds slower than CCO with bio-additive, which is around 0.55 to 0.6 seconds. Moreover, from the observations, it was found that the highest burning rate was achieved in both bio-additives with a concentration of 300 ppm.
The Role of Heterogeneous Catalyst Transesterification in Single Droplet Combustion of Soybean Oil Based Biodiesel Haidar Hanief; Arya Radya Guntur Pamungkas; Mitsuhisa Ichiyanagi; Willyanto Anggono; Cepi Yazirin; Muhammad Akhlis Rizza; Ena Marlina
Automotive Experiences Vol. 8 No. 3 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.15027

Abstract

The consumption of petroleum fuel in Indonesia is increasing, makes the globe climate change a lot. Thus, requiring a renewable energy alternative source such as biodiesel. This study analyzed the single droplet combustion characteristics of soybean oil-based biodiesel produced via transesterification using two heterogeneous catalysts: papaya leaf (PL) and papaya leaf combined with animal bone (PLAB). For comparison, petroleum diesel fuel also tested. Results show that catalyst origin significantly influences combustion behavior. PL exhibited the longest droplet lifetime 7,135 mm/s2 and the highest peak temperature (546 °C), while PLAB showed shorter droplet lifetime 5,001 s/mm2and a lower peak temperature (467 °C), closer to petroleum diesel (4,081 s/mm2 and 254 °C), respectively). In terms of ignition delay, petroleum diesel ignited fastest (3,528 s/mm2), followed by PLAB (4,837 s/mm2) and PL (0,612 s/mm2). The combustion behavior of PLAB is correlated with its higher FAME purity (98%) and methyl linoleate content (43.69%), as reflected by the reduced droplet lifetime. This suggests that the catalyst primarily improves biodiesel quality via enhanced transesterification efficiency, which in turn affects combustion characteristics.
Co-Authors Andi Sanata Arya Radya Guntur Pamungkas Ena Marlina Haidar Hanief Helen Riupassa Hendry Y. Nanlohy Masaki Yamaguchi Mitsuhisa Ichiyanagi Rachmat Subagyo Satworo Adiwidodo Selcuk Sarikoc Suyatno Suyatno Takuya Tomidokoro Trismawati Trismawati Willyanto Anggono Yazirin, Cepi