Production of Biogasoline via Pyrolysis of Oleic Acid Basic Soaps


  • Endar Puspawiningtiyas Department of Chemical Engineering, Institut Teknologi Bandung, Jalan Ganesa No. 10, Bandung 40132, West Java, Indonesia
  • Tirto Prakoso Department of Chemical Engineering, Institut Teknologi Bandung, Jalan Ganesa No. 10, Bandung 40132, West Java, Indonesia
  • Meiti Pratiwi Department of Bioenergy and Chemurgy, Institut Teknologi Bandung, Jalan Ganesa No. 10, Bandung 40132, West Java, Indonesia
  • Subagjo Subagjo Department of Chemical Engineering, Institut Teknologi Bandung, Jalan Ganesa No. 10, Bandung 40132, West Java, Indonesia
  • Tatang Hernas Soerawidjaja Department of Bioenergy and Chemurgy, Institut Teknologi Bandung, Jalan Ganesa No. 10, Bandung 40132, West Java, Indonesia



biohydrocarbon, gasoline, metal soap, oleic acid, pyrolysis


In this study, an investigation on the effect of the Ca/Mg/Zn mixing ratio on gasoline-range hydrocarbon production by oleic basic soap pyrolysis was carried out. The ratios of calcium to magnesium used were 15%, 35%, 50%, 65%, and 85% with constant Zn. Oleic basic soap was obtained by saponification with the modified fusion method. Pyrolysis experiments were carried out at 450 C using a semi-continuous reactor with a feed flow rate of 5 g/15 min. The process produced three fractions, i.e., gas, solid, and liquid (bio-hydrocarbon + water). The gas products were characterized by GC-TCD, and the results showed the presence of carbon dioxide, hydrogen, nitrogen, oxygen, and methane. Based on the GC-FID and FT-IR results, the bio-hydrocarbon comprised mainly homologous hydrocarbon from carbon number C7 to C19 containing n-alkanes, alkenes, various iso-alkanes, and some oxygenated compounds. All calcium ratios in the oleic basic soap produced hydrocarbon in the range of gasoline (C7-C11) as the dominant product. The maximum yield of gasoline (74.86%) was achieved at 15% calcium.


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Author Biography

Tirto Prakoso, Department of Chemical Engineering, Institut Teknologi Bandung, Jalan Ganesa No. 10, Bandung 40132, West Java, Indonesia

Biodiesel, Biofuel, Oleochemical, Biogasoline, Bioavtur, Green diesel.


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