TiO₂ nanofluid for oxygen mass transfer intensification in pulsed plate column

Abstract

Oxygen mass transfer coefficient (k_La) is a key parameter in biochemical, photochemical, or other reactors. Pulsed plate column (PPC) has a potential application as a gas-liquid contactor. In the present work, TiO₂ nanofluid mediated oxygen mass transfer intensification in PPC is studied. The pulsing velocity (A × f) and nanoparticle loading in volume percent (Φ) have an interacting effect on k_La. The effect of Φ on k_La, showed a dual regime of an increase in k_La with an increase in Φ up to a critical loading (Φ_CL) and decrease in k_La on further increase in Φ. The effect of (A × f) on k_La showed three regimes. Φ_CL & k_La were found to decrease as the nanoparticle's size increased. Dimensionless correlations based on multiple regression analysis and ANN models were developed to predict the k_La values in PPC with TiO₂ nanofluids.

Keywords:

• Artificial neural network
• oxygen mass transfer coefficient
• pulsed plate column
• pulsing velocity
• TiO₂ nanofluid

Disclosure statement

No potential conflict of interest was reported by the author(s).