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COMPETITIVE ADSORPTION OF VOCS AND BOMOXIC AND ANOXIC ENVIRONMENTS
Citation:
Sorial, G., S. Papadimas, M. Suidan, AND T. Speth. COMPETITIVE ADSORPTION OF VOCS AND BOMOXIC AND ANOXIC ENVIRONMENTS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-94/553.
Description:
The effect of the presence of molecular oxygen on the adsorption of volatile organic compounds (VOCS) in distilled Milli-Q water and in water supplemented with background organic matter (BOM) is evaluated. xperiments are conducted under conditions where molecular oxygen is present in the test environment (oxic adsorption), and where oxygen is absent from the test environment (anoxic adsorption). dsorption isotherms for tetrachloroethylene (PCE) and trichloroethylene (TCE) in Milli-Q water showed no impact of the presence of oxygen on their adsorption behavior, while adsorption isotherms for cis-1,2-dichloroethylene (DCE) showed higher capacities under oxic conditions. OC isotherms in BOM conducted under oxic conditions generally showed lower capacities than the anoxic isotherms. he Ideal Adsorbed Solution Theory (IAST) successfully predicted the VoCs anoxic adsorption isotherms in BOM. owever, the IAST model did not predict the VOCs oxic adsorption isotherms in BOM.