Degradation of Bisphenol A Using Ozone/Persulfate Process: Kinetics and Mechanism

Yang, Ying; Guo, Hongguang; Zhang, Yongli; Deng, Qinzu; Zhang, Jing

doi:10.1007/s11270-016-2746-x

Cited by 44 publications

(9 citation statements)

References 29 publications

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“…However, for 1 MHz and 10 MHz, the efficiency of the process significantly decreases compared to persulfate alone. This result suggests that, under these conditions, ultrasound is inhibiting persulfate, according to Equations (22) and (23) . The production of hydroxyl radicals still occurs by water sonolysis and hydrogen peroxide is produced from the recombination of .…”

Section: Resultsmentioning

confidence: 99%

Coupling Ultrasound to the Electro‐Oxidation of Methyl Paraben Synthetic Wastewater: Effect of Frequency and Supporting Electrolyte

et al. 2018

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In this paper, electrooxidation of methyl paraben (MeP) is studied by electrolysis only and electrolysis coupled with sonolysis, using a diamond electrode. Complete mineralization of MeP was achieved for both processes, in chloride and sulfate media. Results showed that, although the oxidation of pollutant is faster in the presence of chloride, the mineralization is favored in sulfate medium. Ultrasound irradiation enhanced the removal of organic matter due to the activation of oxidant species in both supporting electrolytes. Moreover, the formation of chlorine gas in the chloride containing medium improves the ultrasound cavitation effect, promoting faster depletion of the total organic carbon in the first hour of treatment. Regarding the formation of more toxic products, all possible organochlorinated intermediates were removed, since complete mineralization was attained in less than 5 hours. Ultrasonic coupling to the electrolysis process accelerates the destruction of the intermediates and delays the formation of perchlorate, which only begins after the complete removal of the total organic carbon. Low and high ultrasound frequencies were evaluated and were found to produce different effects of cavitation, which affect the electrolysis in different ways. The final result will be a balance between these effects and thus, an optimum frequency can be established for different systems.

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Section: Resultsmentioning

confidence: 99%

Coupling Ultrasound to the Electro‐Oxidation of Methyl Paraben Synthetic Wastewater: Effect of Frequency and Supporting Electrolyte

et al. 2018

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“…This was expected, as other authors have reported that ozone alone does not have a significant impact on PFAS concentrations. [8][9][10]39 The average removal efficiencies for the different experiments increased in the order T1 ( 19 It is argued that persulfate can be activated to form SO 4˙− in the presence of OH˙:…”

Section: Sorption Behaviour Of Pfass To the Catalystmentioning

confidence: 99%

“…AOPs are widely applied in diverse combinations in water treatment to degrade a large number of different organic pollutants with the help of ozone (O 3 ), hydrogen peroxide (H 2 O 2 ), ultraviolet radiation (UV), persulfate (S 2 O 8 2− ) and other oxidizing agents. [14][15][16][17][18][19] Different reaction conditions lead to generation of highly reactive radicals like hydroxyl radicals (OH˙), sulfate radicals (SO 4˙− ), hyperoxide radicals (O 2˙− ) or carbonate radicals (CO 3˙− ). 8 Molecular ozone, which has a redox potential of E 0 = 2.07 V, and OH˙(E 0 = 2.8 V) 20 have shown to be insufficient for the degradation of PFASs.…”

Section: Introductionmentioning

confidence: 99%

Removal of per- and polyfluoroalkyl substances (PFASs) from tap water using heterogeneously catalyzed ozonation

Franke

Schäfers

Lindberg³

et al. 2019

Environ. Sci.: Water Res. Technol.

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“…•as is produced [44][45][46] In this study, 84, 64.9 and 61.4% COD removals were obtained for the (MW + PS + EC), (O 3 + PS + EC) and (MW + PS + O 3 ) processes at optimum conditions determined by Taguchi experimental design, respectively. In the study conducted by Orescanin et al [47], 76.3% COD removal was achieved in the treatment of boat pressure washing wastewater containing approximately 215 mg/L COD by EC / ozonation process.…”

Section: Optimization Studymentioning

confidence: 98%

Application of a multiple criteria analysis for the selection of appropriate radical based processes in treatment of car wash wastewater

Durna

Genç

2020

Environmental Engineering Research

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In this study, the treatment of car wash wastewater was investigated by radical based hybrid/combined processes. Proposed processes, (Microwave (MW) + persulfate (PS) + Electrocoagulation (EC)), (ozone (O3) + PS + EC) and (MW + PS + O3), were optimized with Taguchi orthogonal array technique for maximum COD removal. The COD removal under optimum conditions was obtained to be 84%, 64.9% and 61.4%, for (MW + PS+ EC), (O3 + PS+ EC) and (MW + PS+ O3) processes, respectively. Operating costs for (MW + PS + EC), (O3 + PS + EC) and (MW + PS + O3) processes have been calculated as 0.2614, 0.1335 and 0.2653 €/L wastewater under optimum operating conditions. Pareto analysis showed that MW time and PS dose are very effective parameters but especially ozone related parameters have no significant effect on COD removal. Processes were evaluated with the PROMETHEE approach in terms of treatment efficiency, operating cost, sludge formation, and preferability criteria to determine the most suitable among the three alternative processes. As a result, the preference order of the processes for the treatment of car wash wastewater with radical based treatment processes was found as (MW + EC + PS) > (MW + O3 + PS) > (O3 + EC + PS).

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Degradation of Bisphenol A Using Ozone/Persulfate Process: Kinetics and Mechanism

Cited by 44 publications

References 29 publications

Coupling Ultrasound to the Electro‐Oxidation of Methyl Paraben Synthetic Wastewater: Effect of Frequency and Supporting Electrolyte

Coupling Ultrasound to the Electro‐Oxidation of Methyl Paraben Synthetic Wastewater: Effect of Frequency and Supporting Electrolyte

Removal of per- and polyfluoroalkyl substances (PFASs) from tap water using heterogeneously catalyzed ozonation

Application of a multiple criteria analysis for the selection of appropriate radical based processes in treatment of car wash wastewater

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