Kaj Jakobsson
Aalto University
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Publication
Featured researches published by Kaj Jakobsson.
Computers & Chemical Engineering | 2016
Wenli Zhao; Bing Han; Kaj Jakobsson; Marjatta Louhi-Kultanen; Ville Alopaeus
Abstract A mathematical model is proposed for a precipitation process of magnesium carbonate in a heterogeneous stirred tank reactor. The model includes a description of dissolution of Mg(OH)2, absorption of CO2 and precipitation of MgCO3. The Nernst-Planck equation is used in the dissolution model to maintain the mass balance and electroneutrality. The van Krevelen–Hoftijzer expression is introduced to describe the enhancement effect of reaction between dissolved CO2 and OH− on the mass transfer rate of dissolution and absorption. In the precipitation model, a simplified population balance equation is solved by a moment method for both dissolving and precipitating particles. Unknown precipitation kinetics parameters for Mg(OH)2 MgCO3 system are fitted against experimental data and compared with Ca(OH)2 CaCO3 system. According to the present analysis, the liquid−solid and gas−liquid mass transfer dominate the global rate of precipitation. The precipitation kinetics and pH have strong influences on the concentration of reactants and the yield of precipitation.
Chemical Engineering Research & Design | 2013
Aarne Sundberg; Petri Uusi-Kyyny; Kaj Jakobsson; Ville Alopaeus
Chemical Engineering Research & Design | 2016
Waqar Ahmad; Alexandr Ostonen; Kaj Jakobsson; Petri Uusi-Kyyny; Ville Alopaeus; Uula Hyväkkö; Alistair W. T. King
Archive | 2010
Aarne Sundberg; Petri Uusi-Kyyny; Kaj Jakobsson; Ville Alopaeus
Archive | 2014
Wenli Zhao; Mehdi Hasan; Kaj Jakobsson; Marjatta Louhi-Kultanen; Ville Alopaeus
Archive | 2014
Wenli Zhao; Mehdi Hasan; Kaj Jakobsson; Marjatta Louhi-Kultanen; Ville Alopaeus
Archive | 2013
Kaj Jakobsson; Susanna Kuitunen; Ville Alopaeus
Archive | 2010
Aarne Sundberg; Petri Uusi-Kyyny; Kaj Jakobsson; Ville Alopaeus
Archive | 2009
Aarne Sundberg; Petri Uusi-Kyyny; Kaj Jakobsson; Ville Alopaeus
Archive | 2009
Aarne Sundberg; Petri Uusi-Kyyny; Kaj Jakobsson; Ville Alopaeus