Dr.-Ing. Kai Kruber

Am Schwarzenberg-Campus 4 (C)

21073 Hamburg

Building: C - Room: 2.008

eMail: Kai Kruber

Phone:++49 (0)40 42878-3148

Short biography

Kai Kruber studied B.Sc. of Chemical Engineering from 2010 – 2015 and M.Sc. of Chemical Engineering from 2015 – 2016 at TU Dortmund University. From 2016 – 2020, he worked as a Ph.D. student at the Laboratory of Fluid Separations at TU Dortmund University. Since November 2020, he continues his Ph.D. studies at the Institute of Process Systems Engineering.

Field of research

In his research, Kai Kruber focusses on the development of efficient optimization-based methods supporting process synthesis and design. Especially, the optimization of solvent-based separation processes is part of his work.

Publications

[155696]
Title: Interfacial mass transfer in ternary liquid-liquid systems.
Written by: Kruber, K. F.;Krapoth, M.;Zeiner, T.
in: <em>Fluid Phase Equilibria</em>. (2017).
Volume: <strong>440</strong>. Number:
on pages: 54--63
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DOI: 10.1016/j.fluid.2017.02.013
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Abstract: In this work, the interfacial mass transfer in two extraction systems, namely acetone-toluene-water (System I) and hexane-heptane-methanol (System II), was examined experimentally and theoretically. The interfacial mass transfer was experimentally examined by using a Nitsch-Cell. As theoretical approach the density gradient theory (DGT) in combination with the Koningveld-Kleintjens (KK) model was used. At first, the KK-model was used to model the liquid-liquid equilibrium of System I and System II. In combination of the KK-model with the DGT, the interfacial tension was modelled by fitting the influence parameter of the DGT. To estimate the required mutual mobility coefficients in each system, bulk diffusion coefficient coefficients were used. It was shown, that the DGT in combination with a thermodynamic model and experimental information of the bulk diffusion coefficients and the system’s interfacial tension is able to model the interfacial mass transfer. Moreover, it can be stated that the DGT predicts a high enrichment of acetone in System I and this enrichment has an influence on the mass transfer.