Biodiesel Fuel Performance Calculation on the basis of Fatty Acid Composition of Lipids of Some Biotechnologically Important Microorganisms

Physiological, Biochemical and Energetic Characteristics of Torulaspora globosa, a Potential Producer of Biofuel

“…Iodine value (IV) is the main parameter of fuels containing unsaturated fatty acids, which characterizes their chemical stability. In contrast to saturated fatty acids, unsaturated ones have a low chemical stability [3,35,36]. As seen in Table 3, the iodine value (IV) for T. globosa VKPM Y-953 varies from 67.3 to 82.1 mg I 2 /100 g, and thus does not exceed the threshold value restricted from above (120 mg I 2 /100 g).…”

“…The profile of fatty acids, including the length and the degree of unsaturation of their carbon chains, is very important for the calculation of the physicochemical characteristics of biodiesel [3,24,[32][33][34][35][36].…”

“…Generally, diesel engines operate well with a CN from 45 to 55 [36]. Fuels with a lower cetane number have longer ignition delays, requiring more time for the fuel combustion process to be completed [35]. Hence, higher-speed diesel engines operate more effectively when run on fuel with a higher cetane number.…”

“…Density is also an important characteristic of fuel that correlates with other relevant parameters (viscosity, cetane number, heating value) [3,24,35,36]. For example, fuel with a higher density usually has a higher heating value.…”

“…High-viscosity fuel increases flow resistance in pipes, manifolds and injectors and decreases the efficiency of fuel pumps and injectors. The combustion of fuel decreases, causing the appearance of harmful products from incomplete combustion, increased fuel consumption and engine wear [24,35]. Usually, the kinematic viscosity of biodiesels is higher than that of petroleum diesels by 10-15%, due to their higher molecular mass and specific structure.…”