In this study, ibuprofen(IBP) degradation by the photochemical (UV/S2O8 2-) and sonochemical (US/S2O8 2-) processes was examined under various parameters, such as UV (10~40±5 W/L) and US (50~90±5 W/L) power density, optimum dosage of persulfate ion (S2O8 2-), temperature (20~60℃) and anions effect (Cl-, HCO3 -, CO3 2-). The pseudo‐first‐order degradation rate constants were in the order of 10-1 to 10-5 min-1 depending on each processes. The synergistic effect of IBP degradation in UV/S2O8 2- and US/S2O8 2- processes could investigated, due to the generation of SO4 - radical. This result can confirm from the produced H2O2 and SO4 2- concentration in each processes. IBP degradation rate affected by the S2O8 2- dosage, temperature, power and anion existence parameters. In particular, IBP degradation rate increased with the increase of the temperature (60℃) and applied power density (UV:40±5 W/L, US:90±5 W/L). On the other hand, anions effect on the IBP degradation was negative, due to the anion play as a the scavenger of radical.

Abstract
 1. 서 론
 2. 재료 및 실험방법
  2.1. 시약 및 시험 장치
  2.2. 분석항목 및 방법
 3. 결과 및 고찰
  3.1. 초음파, 자외선 단독/혼합(US/S2O82-, UV/S2O82-)공정 시 IBP 분해속도
  3.2. US/S2O82- UV/S2O82-공정 시 S2O82- 주입량 변화에따른 IBP 분해속도
  3.3. 에너지 강도(power density)가 IBP 분해속도에 미치는영향
  3.4. IBP 분해속도에 온도가 미치는 영향
  3.5. IBP 처리 시 음이온이 미치는 영향
 4. 결 론
 참 고 문 헌

• 나승민(고려대학교 건축사회환경공학과) | Seungmin Na (Department of Civil Environmental and Architecture, Korea University)
• Mingcan Cui(고려대학교 건축사회환경공학과)
• 김지형(고려대학교 건축사회환경공학과) | Jeehyeong Khim (Department of Civil Environmental and Architecture, Korea University) Corresponding author
• 안윤경(한국기초과학지원연구원, 서울센터 분석연구부) | Yungyong Ahn (Korea Basic Science Institute)
• 손영규(금오공과대학교 토목환경공학과) | Younggu Son (Department of Civil Environmental and Environmental Engineering, Kumoh National Institute of Technology)