Estimasi Produksi Dan Dispersi Gas Polutan Dari Kegiatan Daur Ulang Limbah Aluminium (Generation Estimation And The Dispersion Of Pollutant Gases From Aluminium Scrap Recyclin)

Abstract

Aluminium scrap recycling is an important link to fulfil the aluminium stock in the market, to reduce the new bauxite mining and to purify the contaminated aluminium scrap. On the other hand, aluminium scrap recycling is also an activity generating wastes such as waste gases, dustfall as well as particulate matter. The objectives of the research were to estimate the amount of the generated waste gases resulted from aluminium scrap recycling and to study the dispersion of the emitted waste gases in the ambient air surrounding the recycling activity by using the Gaussian dispersion simulation model. Supporting data of wind speed and direction was compiled from the nearest climatology station. The waste gases under concern consist of sulphur dioxide (SO2), carbon monoxide (CO), nitrogen oxide (NO2) and particulate matter (PM10). Generation estimation was based on recycling capacity of aluminium scrap in the order of 700 ton/year. Result of the analysis indicated that at this recycling capacity the generated slag is 177 kg/day, SO2 gas 2857 μg/s, NO2 gas 10.551 μg/s, and CO gas 2777 μg/s. Simulation showed that all of dispersed waste gases in the ambient air complied with the national standard according to Government Regulation No 41/1999 pertaining on Air Pollution Control.