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All Journal The Indonesian Journal of Occupational Safety and Health Jurnal Geosaintek
Muhammad Ilham Rizky Maulana
Bogor Agricultural University
Earth & Planetary Sciences Health Professions Medicine & Pharmacology

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GREENFUSION: SYNTHESIS OF NEXT-GENERATION GREEN DIESEL FUEL THROUGH HYDRODEOXYGENATION OF NYAMPLUNG AND UCO Muhammad Ilham Rizky Maulana; Fahri Sinulingga
Jurnal Geosaintek Vol. 12 No. 1 (2026): Special Issue: Energynovation Ideas Competition in Collaboration with Pertamin
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25023659.v12i1.9269

Abstract

The urgency of the energy transition in Indonesia is becoming increasingly pressing due to the country's high dependence on fossil fuels and the presence of 5 million diesel vehicles. This research introduces "GreenFusion," a method for synthesizing green diesel to overcome the limitations of conventional biodiesel. The objective is to investigate the hydrodeoxygenation of a dual non-food feedstock mixture, specifically Calophyllum inophyllum (Nyamplung) oil and used cooking oil (UCO). The approach involves synthesizing a nickel-silver catalyst on natural zeolite (NiAg/ZH) and conducting the hydrodeoxygenation process in a batch reactor at temperatures between 325°C and 375°C. The results confirm the successful synthesis of high-quality green diesel with an estimated yield of 91,2% and a cetane number of 75. Environmental impact projections at the pilot scale indicate significant potential for reducing UCO waste and lowering CO2 emissions by over 1,200 tons per year. Therefore, GreenFusion presents a technically viable and environmentally superior pathway for producing drop-in fuel, supporting Indonesia's goal of achieving the 2060 Net Zero Emissions (NZE) target.
Forensic Audit of OHS and Environmental Disclosures in Indonesia’s FMCG Sector HANDY BUGIMAN; TOTA PIRDO KASIH; Muhammad Ilham Rizky Maulana
The Indonesian Journal of Occupational Safety and Health Vol. 15 No. 2 (2026): The Indonesian Journal of Occupational Safety and Health
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/ijosh.v15i2.2026.176-185

Abstract

Introduction: Sustainability reporting within the Indonesian Fast-Moving Consumer Goods (FMCG) sector is receiving closer public attention. This study investigates whether firm size guarantees disclosure quality in occupational health and safety (OHS) and environmental performance. Methods: A sample of 20 manufacturing firms is taken with specific criteria and divided into large- and small-capitalization groups. This study then applies forensic ‘strict audit’ procedures based on the Global Reporting Initiative (GRI) to avoid symbolic claims and prioritize verifiable evidence, such as quantitative data and valid certifications. Results: Mann-Whitney U test results indicate that large-capitalization firms outperformed small-capitalization firms in environmental disclosure (U = 20.500, p = 0.022, effect size r = 0.511). In contrast, no significant difference in OHS transparency (U = 30.000, p = 0.124, effect size r = 0.344). The total disclosure score (H3) shows the difference between the two groups is not statistically significant (U = 24.500, p = 0.051, effect size r = 0.435). Large-Capitalization firms possess high inconsistency, where proven by a standard deviation ( ), suggesting a reliance on policy commitments rather than granular safety data. Additionally, a strong positive correlation (rs ) reflects a broader organizational reporting orientation. Conclusion: Firm size is a reliable indicator of environmental disclosure quality, but it does not ensure that safety disclosure is mature. This result shows that there is a gap between policy commitments and detailed technical accountability. As a result, regulators should prioritize clear and targeted capacity-building programs instead of relying mainly on regulatory enforcement.
Co-Authors Fahri Sinulingga HANDY BUGIMAN TOTA PIRDO KASIH