Electrochemical degradation of p-substituted phenols of industrial interest on Pt electrodes.

Torres-Palma, Ricardo A.; Torres, Walter; Péringer, Paul; Pulgarín, C.

doi:10.1016/s0045-6535(02)00487-3

Cited by 159 publications

(93 citation statements)

References 17 publications

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“…Anodic oxidation is the most common direct electrochemical method [22][23][24][25][26] applied to water remediation. It is based on the use of high O 2 -overvoltage anodes favoring the generation of hydroxyl radical as intermediate of the direct water oxidation to oxygen, which remains adsorbed at the anode surface:…”

Section: Direct Electrolysismentioning

confidence: 99%

See 1 more Smart Citation

Mineralization of Drugs in Aqueous Medium by Advanced Oxidation Processes

Garrido¹,

Brillas²,

Cabot³

et al. 2007

Port. Electrochim. Acta

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Section: Direct Electrolysismentioning

confidence: 99%

“…than from reaction (3), and/or the faster destruction of more easily oxidizable products present in alkaline medium, as anionic forms of possible phenolic derivatives [25]. OH at the BDD surface is always so high that all oxidation products are degraded at similar rate in the pH range 2.0-12.0 tested.…”

Section: Anodic Oxidationmentioning

confidence: 99%

Mineralization of Drugs in Aqueous Medium by Advanced Oxidation Processes

Garrido¹,

Brillas²,

Cabot³

et al. 2007

Port. Electrochim. Acta

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show abstract

“…One of the most commonly applied technique is anodic oxidation, where the destruction of contaminants are achieved by adsorbed hydroxyl radical ( . OH) electrogenerated at the anode surface from oxidation either of water in acid and neutral media or hydroxide ion at pH 10 (Reactions (1) and (2)) (Marselli et al, 2003;Torres et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

“…When conventional anodes such as Pt, PbO 2 , SnO 2 , doped PbO 2 and IrO 2 are utilized in anodic oxidation, most aromatics in acid and alkaline media usually cannot be fully mineralized, which is largely due to the generation of difficultly oxidizable carboxylic acids (Rodgers et al, 1999;Bonfatti et al, 2000;Torres et al, 2003;Brillas et al, 2004). Besides, for PbO 2 and SnO 2 , the release of toxic ions is also a potential danger and most of these electrodes have a short service-life.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical incineration of dimethyl phthalate by anodic oxidation with boron-doped diamond electrode

Hou

Zhao

et al. 2009

Journal of Environmental Sciences

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The anodic oxidation of aqueous solutions containing dimethyl phthalate (DMP) up to 125 mg/L with sodium sulfate (Na 2 SO 4 ) as supporting electrolyte within the pH range 2.0-10.0 was studied using a one-compartment batch reactor employing a boron-doped diamond (BDD) as anode. Electrolyses were carried out at constant current density (1.5-4.5 mA/cm 2 ). Complete mineralization was always achieved owing to the great concentration of hydroxyl radical ( . OH) generated at the BDD surface. The effects of pH, apparent current density and initial DMP concentration on the degradation rate of DMP, the specific charge required for its total mineralization and mineralization current efficiency were investigated systematically. The mineralization rate of DMP was found to be pH-independent and to increase with increasing applied current density. Results indicated that this electrochemical process was subjected, at least partially, to the mass transfer of organics onto the BDD surface. Kinetic analysis of the temporal change of DMP concentration during electrolysis determined by High Performance Liquid Chromatography (HPLC) revealed that DMP decay under all tested conditions followed a pseudo first-order reaction. Aromatic intermediates and generated carboxylic acids were identified by Gas ChromatographyMass Spectrometry (GC-MS) and a general pathway for the electrochemical incineration of DMP on BDD was proposed.

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“…Chlorophenols have a different origin and they are used as fungicides, herbicides, wood preservatives, and in water disinfection process [3,4]. Some of these compounds are either known or suspected endocrine disruptors or carcinogens [5,6].…”

Section: Introductionmentioning

confidence: 99%

Comparison of the performance of different reversed‐phase columns for liquid chromatography separation of 11 pollutant phenols

Castro

Santos-Montes

Izquierdo-Hornillos³

et al. 2007

J of Separation Science

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A systematic optimization of the HPLC separation of a mixture containing 11 pollutant phenols (PPs) using a Hypersil ODS (250 mm64.6 mm, 5 lm) column and UV-DAD detection has been carried out. The binary mobile phases used were obtained by mixing 50 mM phosphate (pH = 3.0) and methanol, ACN, or THF as organic modifiers. After selecting ACN as an organic modifier, the effects of pH and temperature on PPs separation were studied. A mobile phase of 50 mM acetate (pH = 5.0) -ACN (60 : 40 v/v) at 508C allowed the separation of 11 phenols but not to baseline in 17 min. To improve the performance of this separation, the following RP columns were tested: Luna C18 (2), Purospher C18, Synergi C12, Synergi Fusion C18, Gemini C18, Luna Cyano, Lichrospher C8, and Envirosep-PP (polymeric). In all the cases, the performance (analysis time, retention, selectivity, resolution, asymmetry factors, and efficiency) was evaluated. A further reoptimization of the mobile phase was carried out for all the columns by studying the ACN content and pH, with the aim of improving the above-mentioned separations and selecting the most suitable one for PPs analysis.

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Electrochemical degradation of p-substituted phenols of industrial interest on Pt electrodes.

Cited by 159 publications

References 17 publications

Mineralization of Drugs in Aqueous Medium by Advanced Oxidation Processes

Mineralization of Drugs in Aqueous Medium by Advanced Oxidation Processes

Electrochemical incineration of dimethyl phthalate by anodic oxidation with boron-doped diamond electrode

Comparison of the performance of different reversed‐phase columns for liquid chromatography separation of 11 pollutant phenols

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