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Decomposition of phenylarsonic acid by AOP processes: degradation rate constants and by-products

  • 14th EuCheMS International Conference on Chemistry and the Environment (ICCE 2013, Barcelona, June 25 - 28, 2013)
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Abstract

The paper presents results of the studies photodegradation, photooxidation, and oxidation of phenylarsonic acid (PAA) in aquatic solution. The water solutions, which consist of 2.7 g dm−3 phenylarsonic acid, were subjected to advance oxidation process (AOP) in UV, UV/H2O2, UV/O3, H2O2, and O3 systems under two pH conditions. Kinetic rate constants and half-life of phenylarsonic acid decomposition reaction are presented. The results from the study indicate that at pH 2 and 7, PAA degradation processes takes place in accordance with the pseudo first order kinetic reaction. The highest rate constants (10.45 × 10−3 and 20.12 × 10−3) and degradation efficiencies at pH 2 and 7 were obtained at UV/O3 processes. In solution, after processes, benzene, phenol, acetophenone, o-hydroxybiphenyl, p-hydroxybiphenyl, benzoic acid, benzaldehyde, and biphenyl were identified.

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Authors and Affiliations

  1. Institute of Non-Ferrous Metals, 44-100, Gliwice, Sowinskiego 5, Poland

    K. Jaworek, M. Czaplicka & Ł. Bratek

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  1. K. Jaworek
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  2. M. Czaplicka
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  3. Ł. Bratek
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Correspondence to K. Jaworek.

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Responsible editor: Roland Kallenborn

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Jaworek, K., Czaplicka, M. & Bratek, Ł. Decomposition of phenylarsonic acid by AOP processes: degradation rate constants and by-products. Environ Sci Pollut Res 21, 11917–11923 (2014). https://doi.org/10.1007/s11356-014-2983-8

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  • DOI: https://doi.org/10.1007/s11356-014-2983-8

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