Decomposition of 2-Nitrophenol in Aqueous Solution by Ozone and UV/Ozone Processes

Authors: Ku, Young; Hung, Jia-Jing; Wang, Wen-Yu

Source: Water Environment Research, Volume 78, Number 9, September 2006 , pp. 901-908(8)

Publisher: Water Environment Federation

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Abstract:

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.

Keywords: 2-nitrophenol; ozone; UV/ozone; surfactant

Document Type: Research article

DOI: http://dx.doi.org/10.2175/106143005X78672

Publication date: 2006-09-01

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Water Environment Research� (WER�) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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Decomposition of 2-Nitrophenol in Aqueous Solution by Ozone and UV/Ozone Processes

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