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Decomposition of 2‐Nitrophenol in Aqueous Solution by Ozone and UV/Ozone Processes
Author(s) -
Ku Young,
Hung JiaJing,
Wang WenYu
Publication year - 2006
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143005x78672
Subject(s) - ozone , aqueous solution , decomposition , chemistry , chemical decomposition , nitrophenol , photochemistry , environmental chemistry , inorganic chemistry , catalysis , organic chemistry
The decomposition of 2‐nitrophenol in aqueous solutions by ozone and UV/ozone processes was found to be technically feasible under adequate experimental conditions. Formation of nitrate ions was observed following the decomposition of 2‐nitrophenol by ozone and UV/ozone processes. Increasing ozone dosage and UV light intensity accelerated the decomposition rate of 2‐nitrophenol in an aqueous solution. The species distribution of 2‐nitrophenol under various solution conditions plays a significant role in determining decomposition behavior. In most experiments conducted in this study, the decomposition of 2‐nitrophenol by ozone and UV/ozone processes was favored to occur in alkaline conditions. The addition of 2‐butanol accelerated the rate of gaseous ozone transfer to an aqueous phase by reducing the surface tension of aqueous solution and therefore enhancing the decomposition rate of 2‐nitrophenol by ozone and UV/ozone processes.