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Studies of a mixing process induced by a rotating magnetic field with the application of magnetic particles

Rakoczy Rafał, Kordas Marian, Markowska-Szczupak Agata, Konopacki Maciej, Augustyniak Adrian, Jabłońska Joanna, Paszkiewicz Oliwia, Dubrowska Kamila, Story Grzegorz, Story Anna, Ziętarska Katarzyna, Sołoducha Dawid, Borowski Tomasz, Roszak Marta, Grygorcewicz Bartłomiej, Dołęgowska Barbara

Chemical and Process Engineering

2021

Vol. 42, nr 2

157-–172

We demonstrate in this study that a rotating magnetic field (RMF) and spinning magnetic particles using this kind of magnetic field give rise to a motion mechanism capable of triggering mixing effect in liquids. In this experimental work two mixing mechanisms were used, magnetohydrodynamics due to the Lorentz force and mixing due to magnetic particles under the action of RMF, acted upon by the Kelvin force. To evidence these mechanisms, we report mixing time measured during the neutralization process (weak acid-strong base) under the action of RMF with and without magnetic particles. The efficiency of the mixing process was enhanced by a maximum of 6.5% and 12.8% owing to the application of RMF and the synergistic effect of magnetic field and magnetic particles, respectively