Abstract

This paper deals with the second of a two-zone model developed for estimation of volatile organic compound (VOC) emissions from industrial process drains. Zone 2 consists of the trap volume in a sealed drain, where emissions were found to be affected by air entrainment and volatilization at the surface of the water seal. Emissions via bubble entrainment were influenced by the air entrainment rate and degree of chemical equilibrium (saturation). Each of these factors was correlated with process flowrate for both intact and disintegrated flow regimes. Entrained air bubbles were observed to approach a condition of chemical equilibrium exponentially with decreasing Henry's law constant.

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