Aksaray University Journal of Science and Engineering

Abstract

In the study, it is aimed to determine the possible
effects of air pollutants (CO, SO₂, NO, NO₂, O₃)
in the Kocaeli-Dilovasi region where the industry is concentrated with ALOHA
software. In the modeling studies, air pollutant concentration data for the
years 2010 and 2017 of the National Air Quality Monitoring Network established
by the Ministry of Environment and Urban Planning was used. Modeling studies were conducted through direct source
and instant release scenarios. Toxic effects were
identified for all air pollutants and the largest impact areas were identified
for the toxic zone. For NO and NO₂, the effect distance was
determined to be 10km in red (>20 ppm, PAC-3), orange (>12 ppm, PAC-2)
and yellow (0.5 ppm, PAC-1) every two years. The worst-case scenario was
considered with the selection of the atmospheric F stability class. Toxicity as well as combustion and explosion effects
were determined for CO air pollutant. For the year 2010, the flammable region,
red (>75000 ppm, 60% LEL) = 2.2 km and yellow (>12500 ppm, 60% LEL) =distance
of 4.7km effects were obtained. It was determined that the detonation explosion
effects gave larger impact distances (<3km) and showed all explosion effects
of the destructions of buildings (>8 psi), serious injury likely (>3.5
psi), and shatters glass (>1.0 psi). It was indicated that concentrations
for CO and O₃ air pollutants declined in 2017 and so resulted in a
decrease in all impact values. It has been predicted
that environmental regulations could be more effective if quantitative
assessments of the possible effects of air pollutants were made.