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Volatilization of organic compounds from streams

American Society of Civil Engineers Journal of Environmental Engineering
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Abstract

Mass-transfer coefficients for the volatilization of ethylene and propane were correlated with the hydraulic and geometric properties of seven streams, and predictive equations were developed. The equations were evaluated using a normalized root-mean-square error as the criterion of comparison. The two best equations were a two-variable equation containing the energy dissipated per unit mass per unit time and the average depth of flow and a three-variable equation containing the average velocity, the average depth of flow, and the slope of the stream. Procedures for adjusting the ethylene and propane coefficients for other organic compounds were evaluated. These procedures are based on molecular diffusivity, molecular diameter, or molecular weight. Because of limited data, none of these procedures have been extensively verified. Therefore, until additional data become available, it is suggested that the mass-transfer coefficient be assumed to be inversely proportional to the square root of the molecular weight.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Volatilization of organic compounds from streams
Series title American Society of Civil Engineers Journal of Environmental Engineering
Volume 108
Year Published 1982
Language English
Publisher American Society of Civil Engineers
Contributing office(s) Toxic Substances Hydrology Program
Description 17 p.
First page 973
Last page 989