ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
Decomposition of meta- and para-phenylphenol during ozonation process
Magdalena Olak-Kucharczyk, Jacek S. Miller, and Stanisław Ledakowicz
Faculty of Process and Environmental Engineering, Lodz University of Technology, ul. Wólczańska 213, 90-924, Łódź, Poland
Abstract: The decomposition of meta-phenylphenol (m-PP) and para-phenylphenol (p-PP) in a heterogeneous gas-liquid system using ozone was investigated. The influence of different reaction parameters such as ozone and PP isomers concentration as well as pH and temperature of the reaction mixture on the PP decay rate was determined. The second-order rate constants for the direct reaction of molecular ozone, determined in a homogeneous system, were (5.85 ± 0.35) × 102 M−1 s−1 and (8.90 ± 0.33) × 102 M−1 s−1 for m-PP and p-PP, respectively. The rate constants for the reaction of m-PP and p-PP with ozone increased with increasing pH. The reaction rate constants with ozone were found to be (1.75 ± 0.02) × 109 M−1 s−1 and (1.86 ± 0.02) × 109 M−1 s−1 for m-PP and p-PP anions, respectively.
Keywords: phenylphenols – xeno-oestrogens – ozonation oxidation – degradation kinetics
Full paper is available at www.springerlink.com.
Chemical Papers 67 (9) 1157–1163 (2013)