Fig. 3From: Periodic-peristole agitation for process enhancement of butanol fermentationHydrodynamics parameters in periodic-peristole agitation group and traditional Rushton impeller group. a shows the relationship between eddy length and cell growth enhancement rate. Cell growth enhancement rate was calculated by dividing biomass in the reference group (stationary culture group) by that in the experimental group at 120 h; b shows the relationship between eddy length and agitation velocity; c shows the relationship between eddy length and turbulence intensity; d shows the relationship between the eddy length and the maximum velocityBack to article page