2134/21616
Marco S. Lucas
Marco S.
Lucas
Nuno Reis
Nuno
Reis
Gianluca Li-Puma
Gianluca
Li-Puma
Intensification of ozonation processes in a novel, compact, multi-orifice oscillatory baffled column
Loughborough University
2016
Multi-orifice oscillatory baffled column
Ozonation
p-Hydroxybenzoic acid
Process intensification
Water and wastewater treatment
Chemical Engineering not elsewhere classified
2016-06-13 14:57:18
Journal contribution
https://repository.lboro.ac.uk/articles/journal_contribution/Intensification_of_ozonation_processes_in_a_novel_compact_multi-orifice_oscillatory_baffled_column/9245129
A novel approach for the intensification of ozonation of water and wastewater is presented using a highly efficient and compact Multi-Orifice Oscillatory Baffled Column (MOBC) ozonation contactor. The MOBC uniquely yielded full (i.e. 100%) use of the ozone supplied with a very short (2.25 min) liquid contact time under continuous operation and reducing the need of further gas-liquid contacting equipment downstream from the MOBC. The increased performance of the MOBC ozonation reactor was benchmarked against a bubble column (BC) design and resulted in 20% increase on the rate of p-hydroxybenzoic acid (p-HBA) degradation, 75% increase in the rate of mineralization of p-HBA per mole of ozone consumed, and 3.2-fold increase in the rate of mineralization of p-HBA per mole of ozone supplied. This results from the very small size of bubbles (few hundreds of microns) and enhanced gas-liquid mass transfer and hold-up generated in the presence of small fluid pulsations and orifice baffles.