Diethyl phthalate (DEP) and nonylphenol (NP) are widely spread in the natural environment as an endocrine disruption chemicals (EDs). Therefore, in this study, ultrasound (US) and ultraviolet (UVC), including TiO2, as advanced oxidation processes (AOPs) were applied to a DEP and NP contaminated solution. When only the application of US, the optimum frequency for significant DEP degradation and a high rate of hydrogen peroxide (H2O2) formation was 283 kHz. We know that the main mechanism of DEP degradation is radical reaction and, NP can be affected by both of radical reaction and pyrolysis through only US (sonolysis) process and combined US+UVC (sonophotolysis) process. At combined AOPs (sonophotolysis/sonophotocatalysis) such as US+UVC and US+UVC+TiO2, significant degradation of DEP and NP were observed. Enhancement effect of sonophotolysis and sonophotocatalysis system of DEP and NP were 1.68/1.38 and 0.99/1.17, respectively. From these results, combined sonophotocatalytic process could be more efficient system to obtain a significant DEP and NP degradation.

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1. 시약 및 실험방법
  2.2. 분석항목 및 방법
 3. 결과 및 고찰
  3.1. 초음파 (US) 처리 공정에서 주파수 영향
  3.2. 혼합된 초음파(US)와 광분해(UV-C) 공정에서DEP/NP 분해특성
  3.3. 광촉매(UVC+TiO2) 공정에서 DEP/NP 분해특성
  3.4. 혼합된 초음파-광촉매 (US +UVC+TiO2) 공정에서DEP/NP 분해특성
 4. 결 론
 참 고 문 헌

• 나승민(고려대학교 건축사회환경공학과) | Seungmin Na (School of Civil Environmental and Architecture, Korea University)
• 최명찬(고려대학교 건축사회환경공학과) | Mingcan Cui (School of Civil Environmental and Architecture, Korea University)
• 조상현(고려대학교 건축사회환경공학과) | Sanghyun cho (School of Civil Environmental and Architecture, Korea University)
• 김지형(고려대학교 건축사회환경공학과) | Jeehyeong Khim (School of Civil Environmental and Architecture, Korea University) Corresponding Author
• 안윤경(한국기초과학지원연구원, 서울센터 분석연구부) | Yungyong Ahn (Korea Basic Science Institute)