The characteristics of phenol removal and UV254 matters variance were investigated and compared by the variation of operating factors (NaCl concentration, air flow rate, initial phenol concentration) in electrochemical reaction (ER) and dielectric barrier discharge plasma reaction (DBDPR), respectively. The phenol removal rate was shown as 1st order both in ER and DBDPR. Also, the absorbance of UV254 matters which means aromatic intermediates was analyzed to investigate the complete phenol degradation process. In ER, the phenol degradation and aromatic intermediates production rates increased by the increase of NaCl concentration. However, in DBDPR, the variation of NaCl concentration had no effect on the degradation of phenol and UV254 matters. Air flow rate had a little effect on the removal of phenol and the variation of UV254 matters in ER. The phenol removal rate in ER was a little higher than that in DBDPR. The produced H2O2 and O3 amounts in ER were 2 times and 10 times higher than those in DBDPR. The chlorine intermediates (ClO2 and free chlorine) were produced in ER, however, they were not produced in DBDPR.

Abstract
 1. Introduction1
 2. Experimental
  2.1. Experimental setup
  2.2. Analysis
 3. Results and discussion
  3.1. Effect of NaCl concentration
  3.2. Effect of air flow rate
  3.3. Effect of initial phenol concentration
  3.4. Effect of electric power
 4. Conclusion
 REFERENCES

• Dong-Seog Kim(Department of Environmental Science, Catholic University of Daegu)
• Young-Seek Park(DU University College, Daegu University) Corresponding author