Degradation of atrazine in aqueous medium by electrocatalytically generated hydroxyl radicals. A kinetic and mechanistic study

Balci, Beytul; Oturan, Nihal; Cherrier, Richard

doi:10.1016/j.watres.2009.01.021

Cited by 186 publications

(86 citation statements)

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“…Degradation of organics by EF process follows a pseudo-first order reaction 41 with a rate expression of dyes in reaction with • OH (supposing the quasi-steady-state assumption of …”

Section: Electro-fenton Processmentioning

confidence: 99%

Degradation of Acid Violet 7 and Reactive Black 5 in Water by Electro-Fenton and Photo Electro-Fenton By

Salazar

Ureta-Zañartu

2012

J. Chil. Chem. Soc.

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The mineralization of solutions containing azo dyes Acid Violet 7 (AV7) and Reactive Black 5 (RB5) in aqueous solutions using electro-Fenton (EF) and Photo electro-Fenton (PEF) methods were determined. The electrochemical system includes a glassy carbon mesh electrode (cathode) with a concentric outer steel mesh as anode. The optimized parameters were: 0.01 mM of Fe 2+ ions, and 250 mA of applied current at pH 3. All experiments were made at 35ºC. The degradation was evaluated by color removal and total organic carbon (TOC) decay for solutions of 250 mg L -1 of both cases. The results indicate that the system achieves a degradation efficiency for both dyes proposed, being observed a quickly decolorization of the solutions and the complete transformation of organic compounds to carbon dioxide. The efficiency process and decoloration kinetic constant were evaluated. Generated carboxylic acids such oxalic, oxamic, citric and maleic were found by ion exclusion chromatography. A comparison of the electrochemical system with respect to Fenton`s and Photo-Fenton reaction was also performed.

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“…Degradation of organics by EF process follows a pseudo-first order reaction 41 with a rate expression of dyes in reaction with • OH (supposing the quasi-steady-state assumption of …”

Section: Electro-fenton Processmentioning

confidence: 99%

Degradation of Acid Violet 7 and Reactive Black 5 in Water by Electro-Fenton and Photo Electro-Fenton By

Salazar

Ureta-Zañartu

2012

J. Chil. Chem. Soc.

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“…However, Cu 2+ concentrations higher than 10 mM inhibit H 2 O 2 generation and consequently atrazine degradation rate because of copper deposition on the carbon-felt cathode surface. In this study degradation of cyanuronic acid, the ulitmate product of atrazine was observed, which is very rare (Balci et al, 2009). …”

Section: Hydrogen Peroxide/metal Catalystmentioning

confidence: 58%

Micropollutant Degradation Mechanism

Tepuš¹,

Petrinić²,

Simonič³

2011

Pesticides - Formulations, Effects, Fate

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“…The degradation of atrazine was faster with Fe 3+ than with Cu 2+ , although a synergetic effect of Fe 3+ and Cu 2+ was observed, removing atrazine in 22 min (Balci et al, 2009). Photo-electro-Fenton was found to be more effective than electroFenton using a carbon polytetrafluoroethylene cathode (Borrás et al, 2010).…”

Section: Electro-fenton Processmentioning

confidence: 94%

“…Table S2 shows that atrazine, diuron and pentachlorophenol removal was tested by electro-Fenton using Pt or borondoped diamond (BDD) anodes and carbon-felt, graphite or carbon polytetrafluoroethylene cathodes. When using a carbon-felt cathode (Balci et al, 2009;N. Oturan et al, 2011) atrazine degradation followed the decreasing order: electroFenton-BDD N electro-Fenton-Pt N anodic oxidation-BDD (N. Oturan et al, 2011).…”

Section: Electro-fenton Processmentioning

confidence: 99%

An overview on the advanced oxidation processes applied for the treatment of water pollutants defined in the recently launched Directive 2013/39/EU

Ribeiro

Nunes

Pereira

et al. 2015

Environment International

842

319

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Environmental pollution is a recognized issue of major concern since a wide range of contaminants has been found in aquatic environment at ng L −1 to μg L −1 levels.In the year 2000, a strategy was defined to identify the priority substances concerning aquatic ecosystems, followed by the definition of environmental quality standards (EQS) in 2008. Recently it was launched the Directive 2013/39/EU that updates the water framework policy highlighting the need to develop new water treatment technologies to deal with such problem. This review summarizes the data published in the last decade regarding the application of advanced oxidation processes (AOPs) to treat priority compounds and certain other pollutants defined in this Directive, excluding the inorganic species (cadmium, lead, mercury, nickel and their derivatives).The Directive 2013/39/EU includes several pesticides

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Degradation of atrazine in aqueous medium by electrocatalytically generated hydroxyl radicals. A kinetic and mechanistic study

Cited by 186 publications

References 50 publications

Degradation of Acid Violet 7 and Reactive Black 5 in Water by Electro-Fenton and Photo Electro-Fenton By

Degradation of Acid Violet 7 and Reactive Black 5 in Water by Electro-Fenton and Photo Electro-Fenton By

Micropollutant Degradation Mechanism

An overview on the advanced oxidation processes applied for the treatment of water pollutants defined in the recently launched Directive 2013/39/EU

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