The atmospheric dispersion of odorant compounds emitted from paper industry

Abstract

The odorant character of total reduced sulfur (TRS) has been generated interest by some of the paper industries in predicting the quality of the air around their issuing sources. This way, the present paper focus on evaluating the impact on the atmosphere resulting from the TRS emissions from a great paper and cellulose manufacturer by the modeling of the gaseous compositions emitted from two points of sources (considered as the largest contributed). So, it was used the "software" AID (Instantaneous Evaluation of Dispersion) based on Gauss’ model for determination of the concentrations (in the air) resultants of those emissions. In that determination, the main meteorological parameters were approached (of the last 3 years) and necessary kinetic of emission to the modeling. The maximum concentration of TRS obtained after the modeling was of 3,84 ppb (added the two evaluated sources), being below the limits of odoriferous perception (LPO) recommended by international organs (Brazil doesn't have specific regulations for this case). As the toxicity limits are almost always above the LPO, it is safe to affirm that, on the evaluated case, the maximum concentration expected doesn't show toxicity risks to the exposed population, once, for the obtained value, neither the odor could be noticed.