S2O82−/UV-C and H2O2/UV-C treatment of Bisphenol A: Assessment of toxicity, estrogenic activity, degradation products and results in real water

Ölmez-Hancı, Tuğba; Dursun, Duygu; Aydın, Egemen; Arslan-Alaton, İdil; Girit, Binhan; Mita, Luigi; Diano, Nadia; Mita, Damiano Gustavo; Guida, Marco

doi:10.1016/j.chemosphere.2014.06.020

Cited by 71 publications

(26 citation statements)

References 43 publications

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“…The toxicity test method used was described in the GB/T 15441-1995 guidelines (23). Percent relative inhibition rates were calculated based on a toxicant-free control (24). The correlation curve between percentage inhibition (%) of Photobacterium phosphoreum T3 spp.…”

Section: Toxicity Measurementsmentioning

confidence: 99%

“…To our best known, no studies have reported on the oxidation kinetics of various initial PAEs concentrations under the same experimental conditions. And, the identification of degradation products accompanied with toxicity change is important during Fenton oxidation process (18,19). To gain a better understanding of the Fenton oxidation process to degrade PAEs, we selected DEP as a model organic material.…”

Section: Introductionmentioning

confidence: 99%

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Fenton’s Oxidation Kinetics, Pathway, and Toxicity Evaluation of Diethyl Phthalate in Aqueous Solution

Zhang

Wang

Lei

2016

Journal of Advanced Oxidation Technologies

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Abstract:A comprehensive study of the chemical oxidation degradation of diethyl phthalate (DEP) was conducted through Fenton processes. Effects of various operating parameters that considerably affect DEP decomposition were investigated, including solution pH, H 2 O 2 , Fe 2+ , and DEP concentration. The removal efficiency of DEP achieved 98% under reaction conditions of pH value of 3.0, concentration of 0.3 mM of Fe 2+ , and 6.0 mM of H 2 O 2 after 170 min. In general, DEP degradation in Fenton process was found to occur in two stages, with an extremely fast stage and then a slow one, as a result of change of H 2 O 2 and Fe 2+ initial concentration. Based on the pseudo-steady-state hypothesis of hydroxyl radical formed by the Fenton reaction, a kinetic model for DEP degradation has been proposed which describes the effect of decomposition byproducts on the oxidation reaction. The experiment results also were in good agreement with Behnajady-Modirshahla-Ghanbery (BMG) kinetic model. During the degradation process, seven degradation intermediates of DEP were detected out by means of GC/MS, including ethyl 2-hydroxybenzoate, ethyl 3-hydroxybenzoate, phthalic anhydride, benzoic acid ethyl ester, malonic acid, oxalic acid, and acetic acid. Probable degradation pathway of DEP by the Fenton reaction was also proposed. Inhibitory effects of DEP and intermediate products were investigated in aqueous solution with Photobacterium phosphoreum. Findings indicated that the solution was not completely detoxified even if DEP completely disappeared, further post-treatment was recommended. All these observations have significant potential applications and require further investigation.

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Section: Toxicity Measurementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fenton’s Oxidation Kinetics, Pathway, and Toxicity Evaluation of Diethyl Phthalate in Aqueous Solution

Zhang

Wang

Lei

2016

Journal of Advanced Oxidation Technologies

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“…These authors related higher degradations applying MP lamps. Olmez‐Hanci et al also conducted experiments to investigate BPA degradation by direct photolysis, for [BPA] 0 = 20 mg · L −1 and pH 8.6; their experimental setup consisted of a maximum of six UV‐C lamps (8 W each), with a radiation fluency of 2.27 W · L −1 . The BPA degradation they reported is similar to that we obtained in the best case (55 %), with 52 % after 120 min of irradiation.…”

Section: Resultsmentioning

confidence: 99%

Degradation of bisphenol A by the UV and UV/H₂O₂ processes: Evaluation of process variables through experimental design

2017

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UV‐based technologies have been proposed for the treatment of wastewater containing bisphenol A (BPA), a toxic, endocrine‐disruptor pollutant. Nevertheless, the evaluation of the role of process variables through experimental design has not been previously addressed. In this study, the effects of BPA and H2O2 initial concentrations, and specific photon emission rate (EP,0) on BPA degradation by the UV and UV/H2O2 processes were investigated, using the Doehlert design and response surface analysis. The experiments were performed in a tubular reactor equipped with a 254‐nm UV lamp, for [H2O2]0 and EP,0 in the ranges 1.6–9.6 mmol · L−1 and 0.87 × 1018–3.6 × 1018 photons · L−1 · s−1, respectively. Photolysis ([BPA]0 = 10–50 mg · L−1) was shown to be inefficient for BPA degradation and mineralization, with pollutant removals lower than 55 %. The specific BPA photolysis rate and BPA removal decreased with increasing [BPA]0. In contrast, all the UV/H2O2 experiments ([BPA]0 = 50 mg · L−1) resulted in total BPA degradation after 60 min of irradiation. In this case, the best conditions were [H2O2]0 = 7.6 mmol · L−1 and Ep,0 = 3.6 × 1018 photons · L−1 · s−1, achieving the highest BPA degradation rate and removal after 15 min, and the second highest TOC removal after 180 min. In most experiments less than 75 % TOC removal was achieved, with 95 % mineralization observed solely for the highest [H2O2]0 and EP,0. In any case, the residual toxicity and endocrine activity of treated solutions must be determined, in order to prove the applicability of the UV/H2O2 process for real water and wastewater treatment.

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“…In natural waters, BPA is usually present at low concentrations (<0.01-1.9 µg/L) [52]. According to JDS2 [26] BPA concentrations of 0.004-0.49 µg/L were detected in river Danube.…”

Section: Resultsmentioning

confidence: 99%

Tetrahymena pyriformis Phagocytic Activity Test for Rapid Toxicity Assessment of Aquatic Micropollutants

Fekete-Kertész

Ullmann

Csizmár

et al. 2017

Period. Polytech. Chem. Eng.

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S2O82−/UV-C and H2O2/UV-C treatment of Bisphenol A: Assessment of toxicity, estrogenic activity, degradation products and results in real water

Cited by 71 publications

References 43 publications

Fenton’s Oxidation Kinetics, Pathway, and Toxicity Evaluation of Diethyl Phthalate in Aqueous Solution

Fenton’s Oxidation Kinetics, Pathway, and Toxicity Evaluation of Diethyl Phthalate in Aqueous Solution

Degradation of bisphenol A by the UV and UV/H₂O₂ processes: Evaluation of process variables through experimental design

Tetrahymena pyriformis Phagocytic Activity Test for Rapid Toxicity Assessment of Aquatic Micropollutants

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S2O82−/UV-C and H2O2/UV-C treatment of Bisphenol A: Assessment of toxicity, estrogenic activity, degradation products and results in real water

Cited by 71 publications

References 43 publications

Fenton’s Oxidation Kinetics, Pathway, and Toxicity Evaluation of Diethyl Phthalate in Aqueous Solution

Fenton’s Oxidation Kinetics, Pathway, and Toxicity Evaluation of Diethyl Phthalate in Aqueous Solution

Degradation of bisphenol A by the UV and UV/H2O2 processes: Evaluation of process variables through experimental design

Tetrahymena pyriformis Phagocytic Activity Test for Rapid Toxicity Assessment of Aquatic Micropollutants

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Degradation of bisphenol A by the UV and UV/H₂O₂ processes: Evaluation of process variables through experimental design