UAP Sulphur Dioxide reports and effects on environment

UAP Sulphur Dioxide reports and effects on environment

1. Concentration (ppm) Effects 0.2 Lowest concentration causing a human response 0.3 Threshold for taste recognition 0.5 Threshold for odour recognition 1.6 Threshold for inducing reversible broncho -constriction in healthy individuals 8-12 Immediate throat irritation 10 Eye irritation 20 Immediate coughing Sulphor Oxides Most Common – SO2 Colorless sharp pungent odour gas Moderately soluble in water 11.3 g/100 ml Oxidized slowly in clean air SO2 can react with polluted atmosphere under then presence of sun light and catalyst – salts of Sulphuric acid SO3 – H2SO4 SO2 & SO3 easily washed out due to rain Acid Rain

2. Major source of SO2 BEFORE COMBUSTION AFTER COMBUSTION

3. Scrubber Calculations