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Author

Muhammad Riski Gunawan Nasution

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Open access Sep 2026

Energy Potential and Economic Analysis of Biogas from a Domestic-Scale Lay-Down Biodigester: A Study of Specific Yield, Calorific Value, and Greenhouse Gas Emission Reduction

This study investigates the energy potential and economic value of biogas produced from a 254-liter concrete lay-down biodigester integrated with a centrifugal pump, through three 22-day anaerobic fermentation cycles using cow manure. Parameters analyzed include specific yield (m³/kg feedstock), coefficient of variatio...

Muhammad Riski Gunawan Nasution, Ryoshi Meijisa Reigi Putra, Khairul Akli et al. · 0 citations
Open access Sep 2026

Synthesis of Oil Palm Mesocarp Lipase Biocatalyst Immobilized on Zeolite for Enzymatic Biodiesel Production from Waste Cooking Oil

Waste cooking oil (WCO) is an abundant and inexpensive feedstock for biodiesel production, but conventional homogeneous acid or base catalysts are prone to saponification and are difficult to separate from the reaction product. Enzymatic catalysis using lipase provides a milder and more selective alternative. This stud...

Ririn Arsy Gunawan, Nurfajrina Husna Rahimi, Addinul Akbar et al. · 0 citations

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