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Muhammad Taufiq Fathaddin
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Program Studi Magister Teknik Perminyakan (Master of Petroleum Engineering) Fakultas Teknologi Kebumian dan Energi Universitas Trisakti Gedung D Lantai 5 Universitas Trisakti, Jalan Kyai Tapa No.1 Grogol, Jakarta Barat, 11440, Indonesia.
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Journal of Earth Energy Science, Engineering, and Technology
Published by Universitas Trisakti
ISSN : 26153653     EISSN : 26140268     DOI : https://doi.org/10.25105/jeeset.v1i1
Core Subject : Science,
Energy
This journal intends to be of interest and utility to researchers and practitioners in the academic, industrial, and governmental institutions.
Arjuna Subject : Energi (semua kategori) - Energi Terbarukan, Keberlanjutan dan Lingkungan
Articles 133 Documents
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Experimental Investigation of the Effect of Temperature on Biodiesel Production from Used Cooking Oil Prasetiyo, Dani Hari Tunggal; Ilminnafik, Nasrul; Sanata, Andi; Sholahuddin, Imam; Arbiantara, Hari; Dwilaksana, Dedi
Journal of Earth Energy Science, Engineering, and Technology Vol. 9 No. 1 (2026): JEESET VOL. 9 NO. 1 2026
Publisher : Penerbitan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/2am28c76

Abstract

Used cooking oil is a waste product with great potential as a raw material for biodiesel production through transesterification. This study was conducted to determine the effect of transesterification reaction temperature on biodiesel yield and quality. The biodiesel production process includes a degumming step to remove gums by adding 1% H₃PO₄. This is then followed by transesterification using 1% NaOH as the catalyst, an oil-to-methanol ratio of 1:0.5, a stirring speed of 300 rpm, and a reaction time of 60 minutes. The transesterification reaction temperatures were 40°C, 50°C, 60°C, and 70°C. The results showed that the reaction temperature significantly affected the yield and physical quality of biodiesel. The highest yield was 85.85% at 40°C, while the lowest was 80.37% at 70°C. The maximum viscosity was observed at 60°C (6.0 cSt), and the minimum at 70°C (5.71 cSt). The highest density was 0.8620 g/mL at 50 °C, and the lowest was 0.8607 g/mL at 40 °C. The highest flash point was 40°C at 173.27°C, and the lowest was 70°C at 164.97°C. The results showed that the biodiesel produced met the quality standards of SNI 7182:2015, thus supporting its suitability as an alternative fuel derived from used cooking oil.
Effect of Methyl Tertiary Butyl Ether (MTBE) Blending in Pertalite Fuel on Engine Performance and Exhaust Emissions of a 125 cc Vario Motorcycle Musthofa, Imron; Muhajir, Muhamad; Putra, Muhammad Rezki Fitri; Adhielia Noer Syaief, Adhielia Noer; Isworo, Hajar; Ivana, Reza Taufiqi
Journal of Earth Energy Science, Engineering, and Technology Vol. 9 No. 1 (2026): JEESET VOL. 9 NO. 1 2026
Publisher : Penerbitan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/6pp33n89

Abstract

The use of Methyl Tertiary Butyl Ether (MTBE) as an additive in Pertalite fuel has gained attention due to its potential to improve engine performance and reduce exhaust emissions in motorcycles. This study aims to evaluate the effects of MTBE on engine torque, power, and exhaust emissions in a Honda Vario 125cc using three fuel mixtures: standard Pertalite, Pertalite with 10% MTBE, and Pertalite with 20% MTBE. The experimental methodology involved measuring engine performance using a dynotest and analyzing emissions using an exhaust gas analyzer. Fuel consumption was also recorded to assess efficiency. The results revealed that the 10% MTBE mixture (A10) significantly increased engine torque and power compared to the standard Pertalite, while reducing CO emissions. However, the 20% MTBE mixture (A20) led to reduced performance and increased emissions, particularly hydrocarbons, indicating that excessive MTBE negatively impacts combustion efficiency. The optimal concentration of MTBE was found to be 10%, which balanced performance improvement with emission reduction. These findings highlight the potential of MTBE to optimize fuel performance and reduce environmental impact. Future research should explore other fuel additives and further refine MTBE concentrations for more sustainable fuel formulations.
Impact of Oil-Based Mud Filtrate on Phase Behavior and PVT Properties of Gas Condensate Reservoir Fluids
Journal of Earth Energy Science, Engineering, and Technology Vol. 9 No. 2 (2026): JEESET VOL. 9 NO. 2 2026
Publisher : Penerbitan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/sarjnm58

Abstract

The impact of oil-based-mud (OBM) carryover on gas-condensate PVT behavior by comparing duplicate constant-composition expansion (CCE) tests and single-phase properties from an “original” (uncontaminated) run and a “contaminated” run was investigated. Compositional evidence indicates heavy-end enrichment (C13+) in the contaminated sample, which manifests above the dewpoint as slightly lower gas deviation factors (Δz ≈ 0.01–0.03) and higher gas viscosities (+5–8%), while (Bg) and (cg) remain within typical laboratory scatter. Both datasets place the dewpoint near ~2800–2900 psig. The principal divergence occurs in the CCE liquid-dropout response: the uncontaminated run exhibits a physically consistent retrograde curve with a credible maximum of ~0.30–0.35 at ~700–900 psig followed by decline at lower pressures, whereas the contaminated run yields systematically elevated liquid fractions with an exaggerated peak of ~0.60–0.65 and persistent low-pressure excess, patterns indicative of contamination and/or handling artefacts. Relative-volume trends overlap closely between runs, confirming a reproducible bulk P–V response. In subsequent work, we will calibrate the Equation of State (EOS) using only the uncontaminated dataset, adopting a dewpoint of ~2800–2900 psig and fitting to the uncontaminated z(P), μg(P), Bg(P), cg(P), and CCE dropout curve, while reserving the contaminated series for targeted sensitivity analyses. Practically, these findings underscore the need for rigorous sampling/decontamination protocols and cross-validation of composition against CCE trends to avoid overestimating condensate yield and near-wellbore liquid banking.

Page 14 of 14 | Total Record : 133

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