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Vol. 25 No. 7 (2013): Vol 25 Issue 7

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Degradation of the Emerging Contaminant Naproxen in Aqueous Solutions by Dielectric Barrier Discharge

https://doi.org/10.14233/ajchem.2013.13668
J.Q. Wang
State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, P.R. China
B.G. Zheng
State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, P.R. China
J.B. Zhang
Department of Environmental Science and Engineering, Fudan University, Shanghai, P.R. China
Z. Zheng
Department of Environmental Science and Engineering, Fudan University, Shanghai, P.R. China

Corresponding Author(s) : J.B. Zhang

jbzhang@fudan.edu.cn

Asian Journal of Chemistry, Vol. 25 No. 7 (2013): Vol 25 Issue 7

Abstract

This study focused on the degradation of naproxen by dielectric barrier discharge. The effects of various parameters such as output power, naproxen initial concentration, solution pH, presence of additives on the degradation of naproxen were investigated. The degradation value was 93.2 % when output power was 60 W and 6 min was selected as the discharge time. The degradation efficiency was higher under acidic conditions than in alkaline media and the degradation efficiency decreased with the increasing of initial concentration at the same discharge time. 0.25 % H2O2 additive enhanced the degradation process, however, 1.0 and 1.5 % H2O2 additive hindered the degradation. The presence of Fe2+ could enhance the degradation of naproxen, however, the increment in degradation efficiency might be suppressed to some extent at a high concentration level. Identification of byproducts has shown that demethylation and decarboxylation are the principal initial processes in the degradation of naproxen under the conditions of this experiment.

Keywords

Degradation Naproxen Dielectric barrier discharge
Wang, J., Zheng, B., Zhang, J., & Zheng, Z. (2013). Degradation of the Emerging Contaminant Naproxen in Aqueous Solutions by Dielectric Barrier Discharge. Asian Journal of Chemistry, 25(7), 3595–3600. https://doi.org/10.14233/ajchem.2013.13668
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