THE EFFECT OF USING BIODIESEL AS AIRCRAFT FUEL ON AIR QUALITY IN SOME EGYPTIAN AIRPORTS

Abstract

This study describes the estimation of engine exhaust gaseous emissions from aircrafts at SSH for the year 2013 & predicted emissions for year 2050. The landing and takeoff (LTO) emissionsof HC, CO, and NOX are calculated using the flight datarecorded by the Egyptian Airports Company and emission factors from the ICAOEngine Exhaust Emission Databank. The LTO emissions calculated in this study do not include emissions caused by aging of the engine, maintenance, in-flight condition, and refueling of the aircraft. The first point demonstrated in this work is that total LTO emissions estimated for year 2013 as 442.047 t /y for HC, 37660.742 t /y for CO, 69340.331 t /y for NOX, and 9.674 t /y for PM. The predicted total LTO emissions from aircrafts at SSH for the year 2050 were calculated as 4928.8241 t /y for HC, 419917.27 t /y for CO, 773144.69 t /y for NOX, and 107.8651 t /y for PMSo, the total emissions will increase 11 times for year 2050.

The assumption of use biodiesel (Soy biodiesel B20) for aircraft engines at SSH for year 2013 leads to the substantial reduction in PM, HC and CO emissions to be 8.687 t/ year, 348.775t/ year, and 33518.06 t/ year, respectively accompanying with the increase in NOx emission to be 70727.137 t/ year. Moreover, the prediction of reduction in emissions for year 2050 are estimated to be96.86005 t/ year for PM, 3888.84125 t/ year for HC, and 373726.369 t/ year for CO, accompanying with the increase in NOx emission 788607.5776 t/ year. The finding here is that Soy biodiesel (B20)will be a appropriate solution now days to improve airport’s air quality, while in the next years to reach 2050.So, we should be mandated using biodiesel for aircraft engines as soon as possible to save our air and save our lives.