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Advanced Oxidation Process for Degradation of Aqueous Phenol in a Dielectric Barrier Discharge Reactor
Author(s) -
Marotta Ester,
Schiorlin Milko,
Ren Xianwen,
Rea Massimo,
Paradisi Cristina
Publication year - 2011
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.201100036
Subject(s) - phenol , aqueous solution , dielectric barrier discharge , decomposition , ozone , degradation (telecommunications) , chemistry , dielectric , reaction rate constant , chemical engineering , electrode , analytical chemistry (journal) , materials science , kinetics , photochemistry , organic chemistry , optoelectronics , telecommunications , physics , quantum mechanics , computer science , engineering
A novel dielectric barrier discharge reactor was developed for the oxidative degradation of organic pollutants in water. Phenol, chosen as a model compound, is efficiently removed from the aqueous solution according to an exponential decay as a function of treatment time at constant voltage. The effect of different experimental variables was investigated, including the active electrodes material and size and the flow rate of air above the solution. A few intermediates and CO 2 , the final product of phenol decomposition, were detected and identified by LC/ESI‐MS and FT/IR analysis. The major reactive species formed upon application of the discharge in air, the OH radical and ozone, were determined by means of specific chemical probes.