• How is jatropha oil extracted?
  • Jatropha oil is extracted from its seeds mechanically using rams or screw presses, chemically or enzymatically using a novel technique called aqueous enzymatic oil extraction (AEOE) and converted into biodiesel by a process called trans-esterification.
  • How does a pretreatment unit help in oil extraction in Jatropha seeds?
  • The pretreatment unit alone decreases an amount of energy in Jatropha seeds before actual oil extraction which helps in oil extraction in Jatropha seeds by 24% of the total internal energy of solvent extraction processes and 66% for mechanical extraction.
  • Which type of extraction method is used in Jatropha seed oil extraction?
  • Screw press type is the most common type used in mechanical extraction which yields an extraction between 65 and 90% by weight and when pre-treated, the efficiency of Jatropha seed oil is 96% 17.
  • How to improve biodiesel production from Jatropha seeds oil?
  • Microwave and ultrasonic pretreatments are the most commonly used pretreatments in oil extraction for seeds. The main aim of this work is to enhance the biodiesel production from Jatropha seeds oil. The main experiment was carried out in National Research Centre, Giza, Egypt. During summer season of 2022.
  • How was oil extracted from Egyptian Jatropha seeds?
  • Schematic diagram of oil extraction by screw press from Egyptian Jatropha seeds. The oil extraction was performed using a specially designed laboratory scale mechanical screw press located in the National Research Center, Giza, Egypt. The specifications of the device are quoted from Ibrahim et al. 15.
  • How are Jatropha seeds pressed?
  • Jatropha seeds were pressed at three speeds of 60, 90 and 120 rpm and four extraction temperatures of 60, 80, 100 and 120 ¡ãC. The oil yield weight and energy were measured for each treatment by energy meter. Also, the time required for pressing for each treatment was recorded. Three replicates were made and average was taken.