Determination of partition coefficients of three volatile organic compounds (dimethylsulphide, dimethyldisulphide and toluene) in water/silicone oil mixtures

Abstract : The main objective of this work was to propose a model able to predict the partition coefficient of odorous or toxic gaseous pollutants (dimethylsulphide, dimethyldisulphide and toluene) in water/silicone oil mixtures. Experimental measurements using a static headspace method were carried out for pure water (H(voc,water)), for pure silicone oil (H(voc,solvent)) and for mixtures of varying composition (H(voc,mixture)). The dramatic decrease in the partition coefficient (H(voc,mixture)) with oil addition clearly showed a deviation from linearity, which was more pronounced for increasing H(voc,water)/H(voc,solvent) ratios. Moreover, experiments using a dynamic absorption method underlined that the absorption capacity of a biphasic water/silicone oil mixture can be classed as the absorption capacity of a pseudo-homogeneous phase whose physical properties (molecular weight and density) can be calculated from the physical properties of water and solvent, and balanced using the ''equivalent absorption coefficients'' H(voc,mixture)/H(voc,water) and H(voc,mixture)/H(voc,solvent). An ''equivalent absorption capacity'' concept is then proposed, which should be useful to design absorption units using two-phase liquid mixtures for the treatment of industrial air loaded with volatile organic compounds. (C) 2010 Elsevier B.V. All rights reserved.
Type de document :
Article dans une revue
Chemical Engineering Journal, Elsevier, 2010, 162 (3), pp.927-934. 〈10.1016/j.cej.2010.06.045〉
Liste complète des métadonnées

https://hal-mines-nantes.archives-ouvertes.fr/hal-00877830
Contributeur : Nathalie Fontaine <>
Soumis le : mardi 29 octobre 2013 - 11:19:30
Dernière modification le : jeudi 20 septembre 2018 - 15:18:02

Identifiants

Citation

Eric Dumont, Guillaume Darracq, Annabelle Couvert, Catherine Couriol, Abdeltif Amrane, et al.. Determination of partition coefficients of three volatile organic compounds (dimethylsulphide, dimethyldisulphide and toluene) in water/silicone oil mixtures. Chemical Engineering Journal, Elsevier, 2010, 162 (3), pp.927-934. 〈10.1016/j.cej.2010.06.045〉. 〈hal-00877830〉

Partager

Métriques

Consultations de la notice

232