Method for preparing biodiesel by oil
A biodiesel and oil technology, applied in biofuel, petroleum industry, fatty acid esterification, etc., can solve the problems of increasing the cost of biodiesel preparation, achieve obvious economic and environmental benefits, and reduce the cost of raw materials
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Embodiment 1
[0019] Add 10 g of rapeseed oil and immobilized lipase derived from Aspergillus oryzae (Aspergillus oryzae) with 200 standard enzyme activities (200 U / g rapeseed oil) based on the unit oil mass, control the temperature at 40 ° C, and then increase the volume concentration to 5% The ethanol (the molar ratio of ethanol and grease is 3:1) is added at a uniform speed within 3 hours. After 6 hours of reaction, the yield of fatty acid monoester in the system was 92%.
Embodiment 2
[0021] Add 10g castor oil and the immobilized lipase derived from Aspergillus oryzae (Aspergillus oryzae) based on 300 standard enzyme activities per unit of oil mass, and control the temperature at 50°C. 4:1) was added uniformly within the first 4 hours. After 6 hours of reaction, the yield of fatty acid monoester in the system was 90%.
Embodiment 3
[0023] Add 10 g of soybean oil and 300 standard enzyme activities based on the unit oil mass derived from the immobilized lipase of Candida antarctica (Candida antarctica), control the temperature at 50 ° C, and add 10% ethanol (ethanol and oil mole ratio of 4:1) was added at a constant rate within the first 4 hours. After 6 hours of reaction, the yield of fatty acid monoester in the system was 93%.
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