Intensification of ozonation processes in a novel, compact, multi-orifice oscillatory baffled column

Marco S. Lucas, Nuno M. Reis, Gianluca Li Puma

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

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 mineralisation of p-HBA per mole of ozone consumed, and 4.5–5.0-fold increase in the rate of mineralisation 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.
Original languageEnglish
Pages (from-to)335-339
JournalChemical Engineering Journal
Volume296
DOIs
Publication statusPublished - 1 Jul 2016

Fingerprint Dive into the research topics of 'Intensification of ozonation processes in a novel, compact, multi-orifice oscillatory baffled column'. Together they form a unique fingerprint.

Cite this