Reaction
Triglycerides |
+ |
3 Alcohol |
+ |
Catalyst |
<---> |
3 Esters (Biodiesel ) |
+ |
Glycerol |
100 kg |
11 kg |
100kg |
11kg |
Technology
Different Technologies to Produce Biodiesel
Variable |
Alkaline |
Lipase Catalysis |
Supercritical Alcohol |
Acid |
Reaction temperature (C) |
60-70 |
30-40 |
239-385 |
55-80 |
Free fatty acid in raw materials |
Saponified products |
Methyl esters |
Esters |
Esters |
Water in raw materials |
Interference with reacation |
No influence |
|
Interference with reaction |
Yield of methyl esters |
Normal |
Higher |
Good |
Normal |
Recovery of glycerol |
Difficult |
Easy |
|
Difficult |
Purification of methyl |
Repeated washing |
None |
|
Repeated washing |
Production cost of catalyst |
Cheap |
Relatively expensive |
Medium |
Cheap |