Investigations of mass transfer with chemical reactions in two-phase liquid-liquid systems

Magdalena Jasińska , Jerzy Robert Bałdyga , Michael Cooke , Adam Kowalski

Abstract

A new method based on experimental determination of the product distribution of a set of complex test reactions has been introduced and applied to study mass transfer in liquid–liquid systems. The test reactions consist of two parallel reactions, one of them being instantaneous and the second fast relative to mass transfer. Two reactants are transferred from the dispersed, organic phase (phase volume 1% vol) to the continuous aqueous phase, where the third reactant is present. Experiments were carried out in a batch system agitated with either a six-blade paddle impeller or a high-shear rotor–stator LR4 Silverson mixer to disperse drops and increase the mass transfer rate. The product distribution and the drop size distribution were measured using gas chromatography–mass spectroscopy and Malvern MasterSizer, respectively with pH variation recorded during the process. The results show that the focused supply of energy in the Silverson mixer is effective for the short term irreversible drop break-up process producing smaller droplets than the six-blade paddle impeller. However for the long term mass transfer process the paddle impeller is more effective due to more uniform supply of energy and better mixing throughout the tank compared to the more localized mixing of the Silverson.
Author Magdalena Jasińska (FCPE / DCRED)
Magdalena Jasińska,,
- Department of Chemical Reactor Engineering and Dynamics
, Jerzy Robert Bałdyga (FCPE / DCRED)
Jerzy Robert Bałdyga,,
- Department of Chemical Reactor Engineering and Dynamics
, Michael Cooke - [University of Manchester]
Michael Cooke,,
-
-
, Adam Kowalski
Adam Kowalski,,
-
Journal seriesChemical Engineering Research & Design, ISSN 0263-8762
Issue year2013
Vol91
No11
Pages2169-2178
Publication size in sheets0.5
Conference14th European Conference on Mixing, 10-09-2012 - 13-09-2012, Warszawa, Polska
Keywords in Polish
Keywords in Englishchemical reaction, mass transfer, mixing efficiency, liquid–liquid dispersion, product distribution
ASJC Classification1500 General Chemical Engineering; 1600 General Chemistry
DOIDOI:10.1016/j.cherd.2013.05.010
URL http://www.sciencedirect.com/science/article/pii/S0263876213002025
Languageen angielski
File
Jasińska M. (i in.) - Investigations of mass.....pdf 1.41 MB
Score (nominal)30
Score sourcejournalList
ScoreMinisterial score = 30.0, 29-04-2020, ArticleFromJournalAndMatConfByConferenceseries
Ministerial score (2013-2016) = 30.0, 29-04-2020, ArticleFromJournalAndMatConfByConferenceseries
Publication indicators WoS Citations = 12; Scopus Citations = 16; GS Citations = 1.0; Scopus SNIP (Source Normalised Impact per Paper): 2013 = 1.667; WoS Impact Factor: 2013 = 2.281 (2) - 2013=2.293 (5)
Citation count*1 (2015-04-23)
Additional fields
UwagiVolume 91, Issue 11 edited by Bałdyga Jerzy Robert, Pohorecki Ryszard
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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