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Absorption of toluene by vegetable oil–water emulsion in scrubbing tower: Experiments and modeling

Hariz, R and del Rio Sanz, J.I. and Mercier, Cendrine and Valentin, Romain and Dietrich, Nicolas and Mouloungui, Zéphirin and Hebrard, Gilles Absorption of toluene by vegetable oil–water emulsion in scrubbing tower: Experiments and modeling. (2017) Chemical Engineering Science, 157. 264-271. ISSN 0009-2509

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Official URL: https://doi.org/10.1016/j.ces.2016.06.008

Abstract

The aim of this work is to study continuous counter-current absorption of Volatile Organic Compounds (VOCs) by an oil–water emulsion. This process enables the treatment of hydrophilic and hydrophobic VOC within a gaseous effluent emitted by chemical or food processing industries. Toluene was chosen as the pollutant in this work because of its hydrophobicity and its widespread use in chemical industries. As organic solvents for VOC absorption, vegetable oils were proposed for the treatment process to reduce the impact on the environment. The absorbing oil was selected for its good absorption capacities, its chemical and thermal stability and its low cost. To test their impact on the operational efficiency of the absorption process, numerous parameters were varied, such as liquid and gas flow rates, temperature and nozzle type. Thermal regeneration (120°C) of the oil was proposed and tested on the experimental device. No impact on efficiency was noted, even after several regenerations. Finally a model was determined to predict the effects of operational conditions on the absorption efficiency of an emulsion.

Item Type:Article
HAL Id:hal-01886419
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
French research institutions > Institut National de la Recherche Agronomique - INRA (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
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Deposited On:29 Nov 2019 12:08

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