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ABSTRACT
The paper presents the results from experimental studies and characterization of a turbine impeller with eight vertical arc-shaped blades arranged in pairs with vertical cutting edges at the front and divergent arc-shaped ends at the rear. The front edges cut the liquid and decrease the flow resistance. The divergent fluid-foil blades help to discharge the flows back in a multi-directional mode that ensures good mixing and mass transfer performance in gas-liquid dispersions specific for biotechnological research and production. Power number as low as 0,8 and KL-0,03 s−1 are obtained.