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Mass Transfer during the Isothermal Drying of Acetylsalicylic Acid
Faculty of Chemical Engineering, National University of Engineering (UNI), Managua, Nicaragua.
Faculty of Chemical Engineering, National University of Engineering (UNI), Managua, Nicaragua.
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Transport Phenomena. (Drying)
Faculty of Chemical Engineering, National University of Engineering (UNI), Managua, Nicaragua.
2006 (English)In: XXII Interamerican Congress of Chemical Engineering, CIIQ 2006 and V Argentinian Congress of Chemical Engineering, CAIQ 2006 - Innovation and Management for Sustainable Development 2006 22nd Interamerican Congress of Chemical Engineering, CIIQ 2006 and 5th Argentinian Congress of Chemical Engineering, CAIQ 2006; Buenos Aires; Argentina; 1 October 2006 through 4 October 2006 / [ed] Oscar Pagola, Buenos Aires, Argentina: Argentine Association of Chemical Engineers (AAIQ) , 2006Conference paper, Published paper (Refereed)
Abstract [en]

The objective of this work is to study theoretically and experimentally the mass transfer during the isothermal drying of acetylsalicylic acid. In the first part, internal mass transfer during isothermal drying of porous bed of acetylsalicylic acid, partially saturated with single solvents has been experimentally and theoretically studied. Drying experiments with water and ethanol as single solvents were performed at different temperatures and transient liquid content profiles were determined. The parameters to describe the retention properties of the solid and the capillary movement of the liquid were determined by comparing experimental data and calculation from a developed mathematical model. In the second part, isothermal drying kinetics of a porous bed of acetylsalicylic acid was examined performing experiments in a tunnel dryer. The Crank solution to the unidirectional mass balance and the model with transport parameters developed in the internal mass transfer part were compared with the experimental drying curves. Particular characteristics reveled during the internal mass transfer experiments demands additional study on the behavior of the solid, probably closely related to dissolution and crystallization processes.

Place, publisher, year, edition, pages
Buenos Aires, Argentina: Argentine Association of Chemical Engineers (AAIQ) , 2006.
Keyword [en]
Effective diffusivity, Hydraulic conductivity, Moisture
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-86118Scopus ID: 2-s2.0-84992323079OAI: oai:DiVA.org:kth-86118DiVA: diva2:500435
Conference
XXII Interamerican Congress of Chemical Engineering, CIIQ 2006 and V Argentinian Congress of Chemical Engineering, CAIQ 2006 - Innovation and Management for Sustainable Development 2006 22nd Interamerican Congress of Chemical Engineering, CIIQ 2006 and 5th Argentinian Congress of Chemical Engineering, CAIQ 2006; Buenos Aires; Argentina; 1 October 2006 through 4 October 2006;
Note

QC 20120525

Available from: 2012-02-13 Created: 2012-02-13 Last updated: 2017-02-21Bibliographically approved

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