R\'eduction de la nuisance olfactive par oxydation photocatalytique

TL;DR

This study investigates photocatalytic oxidation as an effective method to reduce odors from air contaminated with 2-butanone, analyzing the effects of light and concentration, and identifying acetaldehyde as a main byproduct.

Contribution

It provides experimental insights into the photocatalytic degradation of 2-butanone, including kinetic analysis and byproduct identification, advancing odor abatement technologies.

Findings

Degradation rate follows Langmuir-Hinshelwood law.

Light and concentration influence oxidation efficiency.

Acetaldehyde identified as main byproduct.

Abstract

Heterogeneous photocatalysis is an interesting alternative for the purification, decontamination and smell abatment of air. In the present work, the photocatalytic oxidation of 2-butanone (MEK : methyl ethyle ketone) is investigated, this low molecular mass product being the source of serious smell pollution. The influence of light and of the pollutant concentration were investigated in an annular photoreactor. As most VOC's, the degradation rate of MEK follows a Langmuir-Hinshelwood type law. Intermediate products were analysed by GC-MD ; acetaldehyde is the dominant byproduct of the photocatalytic oxidation.