Does biodiesel work in cold weather?
Regarding to jatropha biodiesel, its pour point is minus 5 degree C. Thus, the cold weather properties of jatropha biodiesel depend largely on the type of oil used to make it. Blending jatropha biodiesel with petro-diesel fuel, it is possible to run in very cold weather. How does biodiesel emissions ? Table 1 : Emission changes with different blend fuel Emission B100* B20* Carbon Monoxide -43.2% -12.6% Hydrocarbons -56.3% -11% Particulates -55.4% -18% Nitrogen Oxides +5.8% +1.2% Air Toxics -60% to -90% -12% to -20% Mutagenicity -80% to -90% -20% Carbon Dioxide -78.3% -15.7% *Average of data from 14 EPA FTP heavy duty test cycle tests, variety of stock engines Source: The Environmental Protection Agency (NREL/TP2001), USA What is degumming and why is it necessary? Unlike jatropha crude oil, crude palm oil and soya oil contains about 1-3% phospholipids. This phospholipid portion is also referred to as gums. If these gums are not removed from the crude oil they will precipitate and form a
