Mass transfer analysis and kinetic modeling for process design of countercurrent membrane supported reactive extraction of carboxylic acids

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Publication date
2021
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01A - Journal article
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Chemical Engineering Science: X
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13
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Elsevier
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Abstract
Countercurrent membrane supported reactive extraction (MSRE) was studied for removal of carboxylic acids from aqueous streams with a PTFE capillary membrane. Analysis of the mass transfer rates was per- formed to support modeling of the process. Total mass transfer coefficients ranging from 2.0 10-7 to 4.0 10-7 m/s were obtained when extracting lactic acid with 20 wt% tri-N-octyl amine in 1-decanol with membrane thicknesses of 260 mm and 80 mm. The limiting mass transfer resistance in all experiments was in the membrane phase. The developed model based on mass transfer and reaction in parallel allows to predict countercurrent extraction. Experimental validation with 5, 7 and 12 m long membrane modules showed excellent accordance for two acids, validating the model simulations. Simulated membrane con- tactor lengths required for single, two and three countercurrent stages varied between 10 and 39 m/stage for lactic, mandelic, succinic, itaconic and citric acid, depending on acid, membrane, and diluent.
Keywords
Reactive extraction, Product recovery, Carboxylic acid, Membrane extraction
Subject (DDC)
500 - Naturwissenschaften
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2590-1400
Language
English
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Yes
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Published
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Peer review of the complete publication
Open access category
Gold
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'https://creativecommons.org/licenses/by/4.0/'
Citation
SCHUUR, Boelo, Angelo GÖSSI und Wolfgang RIEDL, 2021. Mass transfer analysis and kinetic modeling for process design of countercurrent membrane supported reactive extraction of carboxylic acids. Chemical Engineering Science: X. 2021. Bd. 13. DOI 10.1016/j.cesx.2021.100119. Verfügbar unter: https://doi.org/10.26041/fhnw-4309