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

Authors : Navid KARGAR, Ali Reza AMANİGHADİM, Amir Abbas MATİN, Golnar MATİN, Hasan Baha BUYUKİSİK

Pages : 15-27

Doi:10.12714/egejfas.37.1.03

View : 50 | Download : 9

Publication Date : 2020-03-15

Article Type : Research Paper

Abstract :Photolytic degradation of dissolved compounds of 16 EPA-Listed PAHs in aqueous medium, exposed to ultraviolet/ titanium dioxide insert ignore into journalissuearticles values(UV-C/TiO 2 );, xenon light/ titanium dioxide insert ignore into journalissuearticles values(Xe/TiO 2 );, xenon light/ hydrogen peroxide insert ignore into journalissuearticles values(Xe/H 2 O 2 ); and ultraviolet/ hydrogen peroxide insert ignore into journalissuearticles values(UV-C/H 2 O 2 ); was studied. The compounds which detected above detection limit of applied analytical method and instrument include: naphthalene insert ignore into journalissuearticles values(Nap);, acenaphthylene insert ignore into journalissuearticles values(Acy);, acenaphthene insert ignore into journalissuearticles values(Ace);, fluorene insert ignore into journalissuearticles values(Flu);, fluoranthene insert ignore into journalissuearticles values(Fln); and pyrene insert ignore into journalissuearticles values(Pyr); survived. A time-course experiment insert ignore into journalissuearticles values(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/TiO 2 > Xe/TiO 2 > UV-C > Xe > Xe/H 2 O 2 , and UV-C /H 2 O 2 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/H 2 O 2 treatment process insert ignore into journalissuearticles values(100.00%); at the end of treatment and the structure of residual PAHs which changed to the lighter compounds insert ignore into journalissuearticles values(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 insert ignore into journalissuearticles values(GC-MS); and the results suggest the evaluating the toxicity of the treated water due to by-product formation concerns.
Keywords : Water treatment, advanced oxidation processes AOPs, photodegradation, endocrine disrupting chemicals EDCs, 16 EPA Listed PAHs

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