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KMID : 1024520140230050963
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Journal of the Environmental Sciences
2014 Volume.23 No. 5 p.963 ~ p.972
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The Study of Ibuprofen Degradation Properties by Combination of Wave Energy (Ultrasound, Ultraviolet) and Persulfate Ion
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Na Seung-Min
An Yoon-Gyung
Son Young-Gyu
Kim Ji-Hyung
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Abstract
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In this study, ibuprofen(IBP) degradation by the photochemical (UV/S2O82-) 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 (S2O82-), temperature (20~60℃) and anions effect (Cl-, HCO3
-, CO32-). 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/S2O82- and US/S2O8
2- processes could investigated, due to the generation of SO4- radical. This result can confirm from
the produced H2O2 and SO42- concentration in each processes. IBP degradation rate affected by the S2O82- 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.
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KEYWORD
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Ibufropen, Sonochemistry, Photochemistry, Persulfate, Radical
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