Photodegradation of butylparaben in aqueous solutions by 254nm irradiation

Błędzka, Dorota; Gryglik, D.; Miller, Jacek S.

doi:10.1016/j.jphotochem.2009.01.006

Cited by 42 publications

(19 citation statements)

References 26 publications

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“…Assuming that the rate of hydroxyl radical generation is equal to the rate of their disappearance, such that a steady state concentration of hydroxyl radicals is reached, the steady-state concentration of • OH can be calculated using equation (19) [38]: [40,41] In the whole range of wavelenght the quntum yield was assumed as a constant value, what is in agreement with the study of Goldstein and co-workers [41].…”

Section: Kinetic Studysupporting

confidence: 72%

See 1 more Smart Citation

Oxidation of benzotriazole and benzothiazole in photochemical processes: Kinetics and formation of transformation products

Borowska

Felis

Kalka

2016

Chemical Engineering Journal

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Section: Kinetic Studysupporting

confidence: 72%

“…Several types of reactions occur in the UV/H 2 O 2 system and their reaction rates may be presented by the following equations (13)(14)(15)(16)(17)(18) [37,38]:…”

Section: Kinetic Studymentioning

confidence: 99%

Oxidation of benzotriazole and benzothiazole in photochemical processes: Kinetics and formation of transformation products

Borowska

Felis

Kalka

2016

Chemical Engineering Journal

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“…Therefore, • OH may play an important role in parabens degradation in natural waters, and • OH-initiated photochemical degradation of MPB may occur [49]. Generally, [ • OH] in natural waters is 10 −15 -10 −18 mol L −1 [50] and much lower than that in AOPs by 5-9 orders of magnitude.…”

Section: Fate Prediction Of Mpb In Natural Watersmentioning

confidence: 99%

Computational consideration on advanced oxidation degradation of phenolic preservative, methylparaben, in water: mechanisms, kinetics, and toxicity assessments

Gao

Fang

et al. 2014

Journal of Hazardous Materials

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“…Up to now, there are some studies that have investigated the elimination of parabens from aqueous matrices with varying process efficacies; photolysis reactions induced by both solar and UVC irradiation resulted in low removal efficiencies [29][30][31]. Higher removal efficiencies were achieved by coupling UV irradiation with H 2 O 2 [32,33] or by applying advanced oxidation processes such as ozonation [34], UV-induced photocatalysis [35,36] and electrochemical oxidation on BDD anode [37].…”

Section: Introductionmentioning

confidence: 99%

Solar-induced heterogeneous photocatalytic degradation of methyl-paraben

Velegraki

Hapeshi

Fatta‐Kassinos

et al. 2015

Applied Catalysis B: Environmental

106

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a b s t r a c tA solar-induced heterogeneous photocatalytic study on the treatment of methyl-paraben in water has been performed. A solar simulator equipped with a 150 W xenon ozone-free lamp was employed for the experimental runs. Various commercial TiO 2 catalysts have been assessed and the effect of catalyst loading has been extensively studied. Titanium dioxide Aeroxide P-25 was determined as the optimum catalytic material, even at low catalyst loadings. MeP abatement increased with increasing P-25 loading up to 0.5 g L −1 , above which further increase brings no actual improvement on the initial rate of the reaction. The addition of an electron acceptor (i.e. hydrogen peroxide) inhibited the degradation rate of MeP, whereas superoxide radicals were found to be the dominant reactive species in the heterogeneous solarinduced photocatalytic degradation of MeP. Experimental design methodology was applied to assess the significance of variables such as initial pH 0 , MeP concentration and catalyst dosage and to evaluate their effect on the pseudo-first order reaction rate constant (k app ) of the photocatalytic reaction. Complete elimination of 1 mg L −1 MeP was achieved after 35 min at inherent pH 5.2 and 0.5 g L −1 Aeroxide P-25, whereas for the respective run with 10 mg L −1 MeP 240 min reaction time was required. Under the latter conditions, 42% of mineralization was obtained and six intermediates were identified by GC-MS, namely propyl acetate, 2-(2-butoxyethoxy) ethanol, 2,5-dihydroxy-methyl benzoate, hydroquinone, diethyl phthalate and 1,2-benzenedicarboxylic acid bis-(2-methylpropyl) ester.

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Photodegradation of butylparaben in aqueous solutions by 254nm irradiation

Cited by 42 publications

References 26 publications

Oxidation of benzotriazole and benzothiazole in photochemical processes: Kinetics and formation of transformation products

Oxidation of benzotriazole and benzothiazole in photochemical processes: Kinetics and formation of transformation products

Computational consideration on advanced oxidation degradation of phenolic preservative, methylparaben, in water: mechanisms, kinetics, and toxicity assessments

Solar-induced heterogeneous photocatalytic degradation of methyl-paraben

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