Conference Agenda
Overview and details of the sessions of this conference. Please select a date or location to show only sessions at that day or location. Please select a single session for detailed view (with abstracts and downloads if available).
Please note that all times are shown in the time zone of the conference. The current conference time is: 24th Aug 2026, 05:32:22am America, Santiago
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Daily Overview |
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23F: Agriculture & Food Virtual location: VIRTUAL: Agora Meetings | |
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1:20pm - 1:28pm
Effect of acid and base catalytic transesterification on the methyl ester profile of biodiesel Departamento de Agroindustria, Universidad Zamorano, Honduras The study investigates the effect of acid (H₂SO₄) and base (KOH) catalyzed transesterification on the fatty acid profile of biodiesel derived from palm and sunflower oils. A factorial 2x2 experimental design was employed, comparing the two catalysts and oil types, with three repetitions per treatment. Results revealed that potassium hydroxide (KOH) promoted higher yields of monounsaturated fatty acids (e.g., oleic acid) in both oils, while sulfuric acid (H₂SO₄) favored polyunsaturated fatty acids (e.g., linoleic acid). Sunflower biodiesel showed a significant increase in linoleic acid (59%) with H₂SO₄, whereas palm biodiesel retained higher saturated fatty acids (e.g., palmitic acid) with KOH. The findings highlight the catalytic influence on biodiesel composition, impacting properties like oxidative stability and cold flow. Base catalysis proved more efficient for triglyceride conversion, while acid catalysis excelled in preserving unsaturated fatty acids. | |