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Article dans une revue

Surface volatilization modeling of (semi-)volatile hydrophobic organic compounds: The role of reference compounds

Abstract : Volatilization of hazardous hydrophobic organic compounds is often observed in many water, wastewater and soil treatment (bio)processes. Several models have been developed to quantify and predict gas-liquid pollutant transfer, being the proportionality coefficient model (PCM) one of the most commonly used, particularly in wastewater treatment. The PCM is based on the use of oxygen as a reference compound, which has a low resistance to the transfer in the gas phase. However, this resistance might be important for (semi-)volatile organic compounds – or (semi-)VOCs, which may render the use of the PCM model inaccurate. This study proposes an experimental methodology and a modeling approach for the use of the two-reference compound model (2RCM) that considers both the liquid-side and the gas-side resistances, by using water and oxygen as references. Results showed that the 2RCM predicts more accurately the overall mass transfer coefficients than the PCM for a VOC and two semi-VOCs tested in this study. In addition, the 2RCM was found to be a more robust method to estimate mass transfer coefficient of any compound and its use can be extrapolated to all substances. Finally, the relevance and limitations of both models was established.
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https://hal-brgm.archives-ouvertes.fr/hal-03654353
Contributeur : Frédérique Couffignal Connectez-vous pour contacter le contributeur
Soumis le : jeudi 28 avril 2022 - 15:27:52
Dernière modification le : samedi 30 avril 2022 - 19:18:01

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Douglas O. Pino-Herrera, Yannick Fayolle, Eric van Hullebusch, David Huguenot, Giovanni Esposito, et al.. Surface volatilization modeling of (semi-)volatile hydrophobic organic compounds: The role of reference compounds. Journal of Hazardous Materials, Elsevier, 2022, 424, pp.127300. ⟨10.1016/j.jhazmat.2021.127300⟩. ⟨hal-03654353⟩

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