Corona Above Water Reactor for Systematic Study of Aqueous Phenol Degradation

A small batch reactor is developed to study the removal of phenol from a thin layer of water by creating pulsed corona discharges above the water. Pulses of up to 40 kV are applied with a duration of - 50ns and an energy of - 60 In this CAW (Corona Above Water) reactor an ozone yield of up to 90 glk...

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Bibliographic Details
Published in:Plasma chemistry and plasma processing 2006-02, Vol.26 (1), p.3-17
Main Authors: Grabowski, L. R., van Veldhuizen, E. M., Pemen, A. J. M., Rutgers, W. R.
Format: Article
Language:English
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Summary:A small batch reactor is developed to study the removal of phenol from a thin layer of water by creating pulsed corona discharges above the water. Pulses of up to 40 kV are applied with a duration of - 50ns and an energy of - 60 In this CAW (Corona Above Water) reactor an ozone yield of up to 90 glkWh is obtained in ambient air. The phenol degradation is 48 glkWh, using a 1mM initial concentration in demineralized water. The degradation yield increases to almost 100 glkWh by adding to the water either H2 02 or Fe2SO4 or NaOH. The first two additions are considered to increase to amount of OH radicals In the case of NaOH addition it is observed that much more ozone dissolves in the water. The addition of the OH scavenger t-butanol shows that in most cases the main oxidation route of phenol in the CAW reactor is direct ozone attack.
ISSN:0272-4324
1572-8986
DOI:10.1007/s11090-005-8721-8