Abstract
An influence of iron ions presence in water contaminated with phenol on phenol degradation induced by the corona discharge in air-like gas mixture was studied. DC positive corona discharge was generated between a hollow needle, through which air with 1.5 % CO2 flowed, and the water surface. Concentration of phenol and iron sulphate in water was 0.6 mM and 0.08 mM, respectively. It was observed that phenol degradation was not enhanced by the presence of iron ions. There was no Fenton reaction producing OH radicals, in spite of significant production of hydrogen peroxide. Instead of going into Fenton reaction with hydrogen peroxide molecules, iron ions react with ozone which is produced in gas phase and then dissolves in water.
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