Research Article

Abatement efficiency and fate of EPA-Listed PAHs in aqueous medium under simulated solar and UV-C irradiations, and combined process with TiO2 and H2O2

Volume: 37 Number: 1 March 15, 2020
EN

Abatement efficiency and fate of EPA-Listed PAHs in aqueous medium under simulated solar and UV-C irradiations, and combined process with TiO2 and H2O2

Abstract



Photolytic degradation of dissolved compounds of 16 EPA-Listed PAHs in aqueous medium, exposed to ultraviolet/ titanium dioxide (UV-C/TiO2), xenon light/ titanium dioxide (Xe/TiO2), xenon light/ hydrogen peroxide (Xe/H2O2) and ultraviolet/ hydrogen peroxide (UV-C/H2O2) was studied. The compounds which detected above detection limit of applied analytical method and instrument include: naphthalene (Nap), acenaphthylene (Acy), acenaphthene (Ace), fluorene (Flu), fluoranthene (Fln) and pyrene (Pyr) survived. A time-course experiment (0, 1, 2, 5, 12 min) was performed to determine the fate of PAHs profile along treatments. After accomplishment of the removal process ∑6 PAHs ranked as follow: UV-C/TiO2 > Xe/TiO2 > UV-C > Xe > Xe/H2O2, and UV-C /H2O2 with estimated values of 76.38, 23.02, 22.55, 2.78, 0.00 and 0.00% of the concentration values at the beginning of the treatment, respectively. High efficiency of Xe/H2O2 treatment process (100.00%) at the end of treatment and the structure of residual PAHs which changed to the lighter compounds (2,3-ringed PAHs) before accomplishment of the removal process were proven. Generally, low resistance of Fln to all treatment conditions was observed. Total removal of Nap was considered to be a characteristic PAH compound for completion of the removal of PAHs. Mutate of parent PAH compounds and intermediates were analyzed by gas chromatography-mass spectrometry (GC-MS) and the results suggest the evaluating the toxicity of the treated water due to by-product formation concerns.




Keywords

Supporting Institution

Ege University

Project Number

2017/SÜF/014

Thanks

This study was partially funded by Ege University Scientific Research (BAP) (Project No.: 2017/SÜF/014). Authors acknowledge Dr. Ozan Ünsalan (Ege University, Department of Physics) for his help with the analysis of Raman spectra. Navid Kargar and Golnar Matin thank Prof. Yury Gogotsi (A.J. Drexel Nanotechnology Institute, Drexel University) for his useful comments and suggestions on characterization of TiO2 nanocrystals.

References

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Details

Primary Language

English

Subjects

Environmental Sciences

Journal Section

Research Article

Authors

Ali Reza Amani-ghadim
0000-0003-3279-5170
Iran

Amir Abbas Matin
0000-0001-8264-8414
Iran

Hasan Baha Buyukisik
0000-0002-5855-4300
Türkiye

Publication Date

March 15, 2020

Submission Date

April 9, 2019

Acceptance Date

September 5, 2019

Published in Issue

Year 1970 Volume: 37 Number: 1

APA
Kargar, N., Amani-ghadim, A. R., Matin, A. A., Matin, G., & Buyukisik, H. B. (2020). Abatement efficiency and fate of EPA-Listed PAHs in aqueous medium under simulated solar and UV-C irradiations, and combined process with TiO2 and H2O2. Ege Journal of Fisheries and Aquatic Sciences, 37(1), 15-27. https://doi.org/10.12714/egejfas.37.1.03

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