Scientific, financial, and environmental evaluation of the use of non-ionic surfactants to reduce multi-grade gasoline evaporation loss in tanker trucks under thermodynamic conditions using python simulation

Fuel losses during transportation pose a significant challenge for fuel transportation and distribution agencies. In this study, a chemical method or approach was found to address the state of fuel evaporation, including gasoline, during the transportation process. Surfactant materials were used, and this was done by using 100 ppm doses on tanker shipments containing 36,000 liters. A simulation model of mass transfer was developed at temperatures of approximately 60 ° using Python software version 3.14. And depending on API MPMS 19.1 STANDRED BENCHMARK (American petroleum institute manual of petroleum measurement standards). The numerical solution of the governing equations using a time step of ∆t = 0.1 h. Three standard commercial gasoline grades, 87, 91, and 95 octane numbers (ON), were used to compare two surfactants: Span 80 and oleic acid ethoxylate. Regular 87 ON gasoline exhibited the highest natural evaporation rates, as expected. The Span 80 surfactant demonstrated significantly better performance than the alternative, reducing cumulative evaporation by approximately 57,9% and matching the API standards with ≈ ( 1,27), compared to the 63% achieved by oleic acid ethylates. Economically speaking, the treatment essentially pays for itself; a 3.6-liter tank of this material yields about 13,958 Iraqi dinars of super-grade fuel per day. This protective layer mitigates the development of photochemical smog by acting as a chemical barrier that drastically lowers emissions of carcinogenic BTEX gases and volatile organic compounds (VOCs). Crucially, these additives leave no trace and do not affect vehicle engines or fuel combustion efficiency because they are ashless.