BioFlo kLa Predictor

Vessel geometry

Tank diameter D0.50 m

Liquid height H0.75 m

Impeller diameter d0.18 m

Agitation & Aeration

Impeller type

Agitation speed N300 rpm

No. of impellers1

Aeration Rate1.00 vvm

Fluid properties

Media Type

Density ρ1000 kg/m³

Viscosity μ1.0 mPa·s

Mass Transfer Output

volumetric transfer kLa
—
h⁻¹

Gas-Liquid Dynamics

Gassed P/V

—

W/m³

Superficial Vel (vₛ)

—

mm/s

Reynolds Re

—

dimensionless

Aeration No (Fl_G)

—

dimensionless

System Estimates

Working Volume—

Pg / P0 Ratio—

Max OTR—

Flooding Risk—

Model Assumptions

kLa predicted via Van't Riet (1979). P/V utilizes a simplified heuristic power drop based on Aeration Number (Fl_G). Max OTR assumes C* ≈ 8 mg/L (0.25 mmol/L) and C ≈ 0. Multi-impeller systems apply an empirical n^0.5 enhancement factor.