Virginica Seed Oil Extraction And Preparation Of Biodiesel

Biodiesel is green, clean and regenerative energy. It plays an important role to solve the energy crises and environmental crises influencing the sustainable development of our country's economy.Oil extraction and transesterification of Kosteletzkya virginica seeds were researched in this paper.1,The optimal technological parameters of oil extraction from Kosteletzkya virginica seeds by supercritical CO2 fluid extraction technology should be as follows: extraction pressure 25MPa, extraction temperature 45℃, supercritical CO2 flow18kg.h-1 and extraction time 120 min, and under such conditions, the total oil extraction rate after extractionthree times is19.35%.2,The optimal technological parameters of oil extraction from Kosteletzkya virginica seeds by the aqueous enzymatic extraction technology should be as follows: the ratio of enzyme to seeds0.024 ml.g-1, extraction temperature 63℃, the ratio of solid to water1/6 and extraction time 230 min, and under such conditions, the total oil extraction rate is24.28%.3,The optimal technological parameters of oil transesterification from Kosteletzkya virginica oil should be as follows: the rate of rotation 1800r.min-1, catalyst dosage 1%, mole ratio of methanol to Kosteletzkya virginica oil 6/1,reaction time 50min and reaction temperature 65℃, and under such conditions, the total oil transesterification ratio after transesterification three times is 97.8%.4,The optimal technological parameters of oil transesterification from Kosteletzkya virginica oil tocatalyzed by the immobilized enzyme Novo435 should be as follows: reaction temperature47℃, reaction time 31h, the rate of rotation 900r.min-1, the mole ratio of methanol to Kosteletzkya virginica oil 3.2/1,catalyst dosage 18% and under such conditions, the total oil transesterification ratio is 92.68%.5,The optimal technological parameters of oil transesterification from Kosteletzkya virginica oil by the supercritical methanol transesterification technology should be as follows: reaction temperature 300℃,reaction pressure 12Mpa,reaction time 9min,the rate of rotation 300r.min-1 and mole ratio of methanol to Kosteletzkya virginica oil 30/1, and under such conditions, the total oil transesterification ratio after transesterification three times is 97.62%.6,The optimal technological parameters of oil transesterification from Kosteletzkya virginica oil by the ultrasonic-assisted transesterification technology should be as follows: ultrasonic power 180W, catalyst dosage 0.6%, reaction temperature 65℃and mole ratio of methanol to Kosteletzkya virginica oil 7/1, and under such conditions, the total oil transesterification ratio after transesterification three times is 99.85%.