Capital Cost Comparison of Heat Energy obtained from Glycerine Fuel and Cooking gas used for Bio-diesel Production Process

We present the used cooking oil passed into the transesterification process with heat to accelerate the reaction that can result the product in bio-diesel form and the wastes in form of glycerine with alcoholic residues. Such glycerine can be reused as the fuel to the production process again. Therefore this project has objectives to compare the capital cost of the heat energy in the bio-diesel production process between the glycerine which normally is the waste from the bio-diesel production process and cooking gas as the process fuels. The results show that, the production of biodiesel with glycerine as the fuel could gain average bio-diesel quantity 19.16 litters with the capital cost for the fuel in the production process equivalent to 11.66 baht, the time taken for the average production equalled to 2.19 hours per time or batch of production and when the cooking gas was used in the bio-diesel production process, the quantity of produced bio-diesel equalled to 19.1 litters, consumed the capital cost in the average production process equivalent to 12.66 baht, time taken for the average production was 3.18 hours per time of production. Hence, usage of glycerine as the fuel in the production process of bio-diesel of 20 litters batch time could enable lower capital cost for fuel that usage of cooking gas as the fuel with statistically significant level at 0.05.