If in a bioreactor, the gas hold up (ε) is 0.1 and the average diameter of the air bubbles is 1 mm; then the interfacial area (of the air bubble -…
If in a bioreactor, the gas hold up (ε) is 0.1 and the average diameter of the air bubbles is 1 mm; then the interfacial area (of the air bubble - liquid interface), per unit reactor volume is:
Select an option to attempt
Correct Answer: Option A
Explanation
Interfacial area per unit volume in bubble column:For a bubble column bioreactor:where= interfacial area per unit volume (m⁻¹ or cm⁻¹),= gas hold-up (fraction),= bubble diameter.Given:(10% gas hold-up),Converting to cm²/L (multiply by 1000 mL/L... actually per mL to per L):Or in m²/m³:Answer: Interfacial area(or 600 m²/m³).