Magnetotactic Bacteria Separation Using a High-Gradient Ferromagnetic Membrane

摘要

The concept of magnetic separator designed and suitable for analytics and scientific research was presented. The ferromagnetic foil perforated by laser beam was used as a membrane separating unit. The suspension of magnetotactic bacteria Magnetospirillum caucaseum was used to test the magnetic separator designed. To evaluate the separation efficiency the magnetization of bacteria suspension was measured by ferromagnetic resonance. It was shown that during the separation approximately 70% of bacteria were captured by the membrane, whereas the total magnetization of the separated fraction demonstrate a threefold decrease.