Screw press performance for oil extraction from Jatropha curcas L. seeds of different moisture content
2010
Kabutey, A.,Ceska Zemedelska Univ., Prague (Czech Republic). Katedra Mechaniky a Strojnictvi | Herak, D.,Ceska Zemedelska Univ., Prague (Czech Republic). Katedra Mechaniky a Strojnictvi | Hanus, J.,Farmet Company, Ceska Skalice (Czech Republic)
This article describes an extraction experiment conducted to investigate the performance of a screw press oil outlet chamber positions on the amount of oil extracted from Jatropha curcas seeds of different moisture content. The oil extracted from the jatropha seeds was measured at seven different positions of the screw press. The result showed that the maximum amount of oil was produced at the screw press positions 3, 4, 5 and 6, whereas at positions 2 and 7 minimum amount of oil was realized. There was no mass flow of oil at screw press position 1. Jatropha seeds with low moisture content produced greater amount of oil than seeds with high moisture content. Temperature measurement at the screw press positions during the extraction process increased from 20 deg C to 68 deg C, which suggests that more heat was generated and this could have an effect on the oil. In conclusion, moisture content and screw press equipment are important factors that could influence the oil output.
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