Volatile organic compounds(VOCs) are toxic carcinogenic compounds found in wastewater. VOCs require rapid removal because they are easily volatilized during wastewater treatment. Electrochemical advanced oxidation processes(EAOPs) are considered efficient for VOC removal, based on their fast and versatile anodic electrochemical oxidation of pollutants. Many studies have reported the efficiency of removal of various types of pollutants using different anodes, but few studies have examined volatilization of VOCs during EAOPs. This study examined the removal efficiency for VOCs (chloroform, benzene, trichloroethylene and toluene) by oxidization and volatilization under a static stirred, aerated condition and an EAOP to compare the volatility of each compound. The removal efficiency of the optimum anode was determined by comparing the smallest volatilization ratio and the largest oxidization ratio for four different dimensionally stable anodes(DSA): Pt/Ti, IrO2/Ti, IrO2/Ti, and IrO2-Ru-Pd/Ti. EAOP was operated under same current density (25 mA/cm2) and electrolyte concentration (0.05 M, as NaCl). The high volatility of the VOCs resulted in removal of more than 90% within 30 min under aerated conditions. For EAOP, the IrO2-Ru/Ti anode exhibited the highest VOC removal efficiency, at over 98% in 1 h, and the lowest VOC volatilization (less than 5%). Chloroform was the most recalcitrant VOC due to its high volatility and chemical stability, but it was oxidized 99.2% by IrO2-Ru/Ti, 90.2% by IrO2-Ru-Pd/Ti, 78% by IrO2/Ti, and 75.4% by Pt/Ti anodes The oxidation and volatilization ratios of the VOCs indicate that the IrO2-Ru/Ti anode has superior electrochemical properties for VOC treatment due to its rapid oxidation process and its prevention of bubbling and volatilization of VOCs.

ABSTRACT
 1. 서 론
 2. 재료 및 실험방법
  2.1 휘발성유기화합물(VOCs) 함유폐수 제조
  2.2 휘발성유기화합물(VOCs)의 휘발 모사 실험
  2.3 불용성전극(DSA) 제작
  2.4 전기화학 반응기 및 평가조건
  2.5 휘발성유기화합물(VOCs) 분석
 3. 결과 및 고찰
  3.1 휘발성유기화합물(VOCs)의 노출조건 (정치, 교반,휘발)에 따른 휘발특성
  3.2 불용성전극(DSA)별 휘발성유기화합물(VOCs)의제거 특성
  3.3 휘발성유기화합물(VOCs) 종류에 따른 전기화학적 제거 특성
 4. 결 론
 References

• 조완철(한국해양대학교 환경공학과) | Wan-Cheol Cho (Department of Environmental Engineering, Korea Maritime and Ocean University)
• 부경민(한국해양대학교 환경공학과) | Kyung-Min Poo (Department of Environmental Engineering, Korea Maritime and Ocean University)
• 이지은(한국해양대학교 환경공학과) | Ji-Eun Lee (Department of Environmental Engineering, Korea Maritime and Ocean University)
• 김태남(한국해양대학교 환경공학과) | Tae-Nam Kim (Department of Environmental Engineering, Korea Maritime and Ocean University)
• 채규정(한국해양대학교 환경공학과) | Kyu-Jung Chae (Department of Environmental Engineering, Korea Maritime and Ocean University) Corresponding author