Intensified biogas purification in a stirred tank
Identifieur interne : 000272 ( Main/Exploration ); précédent : 000271; suivant : 000273Intensified biogas purification in a stirred tank
Auteurs : Tarsida N. Wedraogo [France] ; Souhila Poncin [France] ; J. Wu [République populaire de Chine] ; Huai Z. Li [France]Source :
- Chemical Engineering and Processing: Process Intensification [ 0255-2701 ] ; 2014-12.
Abstract
The present study aims at intensifying the absorption of carbon dioxide in aqueous phases. For this purpose, a second immiscible liquid phase is used to improve the mass transfer of carbon dioxide in water. Absorption measurements are carried out in a stirred cell by online infrared monitoring of the output carbon dioxide concentration. As dispersed phase, 1-octanol shows an improvement in mass transfer whereas colza oil retards it. Toluene has no significant effect in the range of concentrations investigated. Mass transfer coefficients are determined using a chemical method. Nevertheless, the variety of behaviors could not be explained simply by solubility or variation of mass transfer coefficients. In order to understand the complex gas-liquid-liquid interactions and deduce the mass transfer mechanism between these three phases, surface and interface tension measurements and direct observation of bubbles and droplets are also carried out.
Url:
DOI: 10.1016/j.cep.2014.10.004
Affiliations:
- France, République populaire de Chine
- Grand Est, Lorraine (région)
- Metz, Nancy
- Université de Lorraine
Links toward previous steps (curation, corpus...)
- to stream Hal, to step Corpus: 000645
- to stream Hal, to step Curation: 000645
- to stream Hal, to step Checkpoint: 000249
- to stream Main, to step Merge: 000273
- to stream Main, to step Curation: 000272
Le document en format XML
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<front><div type="abstract" xml:lang="en">The present study aims at intensifying the absorption of carbon dioxide in aqueous phases. For this purpose, a second immiscible liquid phase is used to improve the mass transfer of carbon dioxide in water. Absorption measurements are carried out in a stirred cell by online infrared monitoring of the output carbon dioxide concentration. As dispersed phase, 1-octanol shows an improvement in mass transfer whereas colza oil retards it. Toluene has no significant effect in the range of concentrations investigated. Mass transfer coefficients are determined using a chemical method. Nevertheless, the variety of behaviors could not be explained simply by solubility or variation of mass transfer coefficients. In order to understand the complex gas-liquid-liquid interactions and deduce the mass transfer mechanism between these three phases, surface and interface tension measurements and direct observation of bubbles and droplets are also carried out.</div>
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