Dispersion of So2 and No2 Emitted by Auxiliary Boiler of Pt Kmi Methanol Industrial Using the Gaussian Plum Model Aermod in Bontang City East Kalimantan Indonesia

Abstract

The petrochemical industry PT Kaltim Methanol Industri Bontang City, uses auxiliary boilers with natural gas fuel and is connected to the stack to emit pollutants into the atmosphere. The objectives of this study are SO2 modeling with a radius of 5 kilometers and modeling of NO2 with a radius of 10 kilometers from the emission source. Modeling using AERMOD software, AERMET Software, and Aermap ArcGIS Software. The wind rose in the dominant research area from the southwest and northeast directions. Dispersion of SO2 and NO2 decreases according to the distance. The increase in concentration occurred in areas that experienced elevation increases, in Teluk Pandan District with a distance of about 10 kilometers northwest with an elevation of about 100 meters above sea level, and part of the West Bontang District with a distance of about 5 kilometers to the southwest with an elevation of about 90 meters above sea level. The maximum concentration of SO2 at the receptor was 6.2631 μg/m3 on hourly modeling, 0.58132 μg/m3 on modeling per 24 hours, and 0.0317 μg/m3 on annual modeling. The maximum NO2 concentration at the receptor was 1.96781 μg/m3 on hourly modeling, 0.18089 μg/m3 on hourly modeling, and 0.01002 μg/m3 on annual modeling. The distribution of pollutants based on hourly modeling per 24 hours is spreading in all directions and irregularly while for annual modeling it tends to spread towards the southwest and northeast according to the wind rose.Keywords: AERMOD, Emissions, Modeling, Air Dispersion, Auxiliary boiler

Modelling of Air Pollution Dispersion in the Utilization of Used Oil as a Fuel

“…The minimum and maximum values of SO2 and NOX concentration on both maps are in the ground surface and cliff areas around the factory chimneys [36]. Wind speed also affects this distribution, where the greater it is, the lower the concentration [37]. The wind speed near the chimneys tends to be faster than in the cliff area because it is blocked by the walls [38].…”

Karakteristik Risiko Kesehatan Non Karsinogenik Akibat Paparan Gas SO2 dan NO2 pada Pemulung di TPA Jatibarang Kota Semarang

“…Intake atau asupan dalam penelitian ini merupakan jumlah konsentrasi gas SO2 dan NO2 yang terpajan pada manusia melalui inhalasi atau dosis sebelum absorbsi, gangguan kesehatan sistem pernapasan akan muncul apabila gas SO2 dan NO2 dengan dosis tertentu mampu menembus organ target. 21,31 Faktor-faktor yang mempengaruhi pajanan dan efek toksikan pada tubuh seperti aktivitas toksikan, pola pajanan, faktor meteorologi, sensitivitas dan variasi setiap individu. 24,34 Faktor-faktor ini dapat berubah seiring dengan perjalanan waktu sehingga tingkat risiko untuk proyeksi lifetime serta gangguan kesehatan yang akan muncul pada setiap individu sangat dipengaruhi oleh faktor-faktor tersebut.…”