Journal
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
Volume 299, Issue -, Pages 110-117Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jphotochem.2014.11.013
Keywords
VOC removal; UV photocatalytic reactor; Dielectric barrier discharge treatment; Hybrid reactor; Coupled system
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Funding
- French National Research Agency (ANR)
- Ministerio de Educacion (Spain) [CTM-2010-15031/TECNO]
- Generalitat Valenciana (Spain) [PROMETEO/2013/053]
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The abatement of isovaleraldehyde present in air was carried out in UV photocatalytic and dielectric barrier discharge reactors (and their combinations) for concentrations up to 150 mg C m(-3) and air flow rates ranging from 4 to 10 m(3) h(-1). A kinetic study was performed following a Langmuir-Hinshelwood model. Photocatalytic treatment of an isovaleraldehyde and isovaleric acid mixture showed a clear inhibition of isovaleric acid abatement in presence of isovaleraldehyde. Dielectric barrier discharge treatment of isovaleraldehyde showed an increase of removal efficiency with applied voltage and a decrease with air flow rate and inlet concentration. Moreover, introduction of a catalyst into the dielectric barrier discharge reactor did not produce a significant effect (UV light off). However, a combination of both techniques significantly increased isovaleraldehyde removal efficiency, indicating the treatment technique sequence had an effect on system performance. In conclusion, combined treatment showed promising results for the removal of VOCs, providing a synergic improvement in the removal of isovaleraldehyde. (C) 2014 Elsevier B.V. All rights reserved.
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