Anodic oxidation of phenol for waste water treatment

Comninellis, Ch.; Pulgarín, C.

doi:10.1007/bf01034049

Cited by 618 publications

(261 citation statements)

References 7 publications

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“…8,10,11 Quinones formation followed by its degradation are evidence of a successful phenol oxidation operation, and also the guarantee for the transformation of the solution into a more biodegradable product. On the other hand, reduction of TOC values is an evidence of organics combustion or mineralization.…”

Section: Phenol Oxidation By-productsmentioning

confidence: 99%

“…Phenol has been chosen, as model compound, due to its well-known mechanism of decomposition [8][9][10][11][12] and for the great number of papers found in literature dealing with phenol electrodegradation. [10][11][12][13][14][15] The main goal was to optimize the cell reactor with respect to current density, and to select the best electrode material for organics oxidation. As we are looking forward to scale up the process, the electrode selection is one of the important decisions to take.…”

Section: Comparative Study Of Commercial Oxide Electrodes Performancementioning

confidence: 99%

See 1 more Smart Citation

Comparative Study of Commercial Oxide Electrodes Performance in Electrochemical Degradation of Organics in Aqueous Solutions

Iglia¹,

Sanches²,

Avaca³

et al. 2002

J. Braz. Chem. Soc.

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Section: Phenol Oxidation By-productsmentioning

confidence: 99%

Section: Comparative Study Of Commercial Oxide Electrodes Performancementioning

confidence: 99%

Comparative Study of Commercial Oxide Electrodes Performance in Electrochemical Degradation of Organics in Aqueous Solutions

Iglia¹,

Sanches²,

Avaca³

et al. 2002

J. Braz. Chem. Soc.

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“…10A and its inset suggested that in anode compartment the mineralization of AR14 was much lower at higher recycling flux than at lower flux. Though high recirculation flow velocity could enhance mass transfer and reduce diffusion layer, violent mixture might decrease the contact time of AR14 with hydroxyl radicals which were produced and adsorbed on the anode surface (Comninellis and Pulgarin, 1991). Combined with Fig.…”

Section: Effect Of the Proper Rate Of Mass Transfer And Reaction Timementioning

confidence: 99%

“…When the organic concentration is high, the average current efficiency is high (Comninellis and Pulgarin, 1991). Since the lifetime of hydroxyl radicals is short (only few nanoseconds), they can only react where they are formed (Galindo et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Degradation of azo dye Acid Red 14 in aqueous solution by electrokinetic and electrooxidation process

Wang

Liu

et al. 2004

Chemosphere

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A new wastewater treatment technology--electrokinetic-electrooxidation process (EK-EO process) is developed in this paper. The EK-EO process can take advantage of both electrooxidation on the anode surface and the electrokinetic process of anionic impurities under an electric field, which can enhance the TOC removal in electrolysis process. The degradation of an anionic azo dye Acid Red 14 (AR14) was experimentally investigated. It was found that under an electric field AR14 could be migrated into anode compartment and be efficiently mineralized. After 360 min electrolysis of 100 mg l À1 AR14 solutions at 4.5 mA cm À2 , complete discoloration was observed in both cathode and anode compartment. About 60% TOC was electromigrated from cathode compartment to anode compartment, and more than 25 mg l À1 TOC was abated in anode compartment. A possible degradation mechanism of AR14 by EK-EO process was proposed. Additionally, the effect of current density, recycling flux, and electrolyte concentration on the EK-EO degradation of AR14 was also investigated.

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“…The instantaneous current efficiency (ICE) is obtained considering that during electrochemical incineration two parallel reactions (organic compound oxidation and OER) takes place. So, ICE is defined as the current fraction used for the organic oxidation (Comninellis & Pulgarin, 1991;Pacheco et al, 2007) and was calculated considering the values of chemical oxygen demand (COD) of the wastewater before and after the electrolysis, using the relation…”

Section: Establishment Of the Best Degradation Conditionsmentioning

confidence: 99%