A mechanistic model for estimating VOC emissions from industrial process drains part I: The underlying channel

Recent research has indicated the potential for emissions of volatile organ ic compound (VOCs) from industrial process drains, and a need for better un derstanding of the mass transfer kinetics associated with such emissions. r n this study, a two-zone model was developed in an effort to isolate indivi dual mass transfer mechanisms Zone 1, described in this paper, consists of the underlying channel in either a sealed or unsealed drain. A series of ni ne experiments were completed on a laboratory drain system over a range of operating conditions to determine mass transfer parameters. Liquid-phase ma ss transfer coefficients were highly correlated with liquid flowrate for bo th sealed and unsealed drains. Gas-phase mass transfer coefficients were le ss predictable, but were relatively constant.