Electrochemical oxidation of organic pollutants at low electrolyte concentrations

Saracco, Guido; Solarino, L.; Aigotti, Riccardo; Specchia, Vito; Maja, M.

doi:10.1016/s0013-4686(00)00594-6

Cited by 75 publications

(43 citation statements)

References 7 publications

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“…Saracco et al reported the complex nature of the reaction schemes which likely govern the degradation process using Na 2 SO 4 as electrolyte solution. 16 . From these reactions, it can be hypothesized that SO 4 − /S 2 O 8 2− or other oxidizing species were not formed, since the Ti/Ta/Pt/Ir anode has low overpotential for oxygen evolution.…”

Section: 32mentioning

confidence: 99%

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Electrochemical treatment of olive mill wastewater

Giannis

Kalaitzakis

Diamadopoulos

2007

J of Chemical Tech & Biotech

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Section: 32mentioning

confidence: 99%

“…Sulfates favor persulfate formation and consequent H 2 O 2 generation by persulfate hydrolysis. 16 A relatively new chemical oxidation method that has not received much attention for industrial wastewater treatment is the electro-Fenton method. This method represents a combination of electrochemical process and Fenton oxidation.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical treatment of olive mill wastewater

Giannis

Kalaitzakis

Diamadopoulos

2007

J of Chemical Tech & Biotech

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“…The supporting electrolyte studied for phenol degradation is either sulfuric acid [7,15,16] or sodium sulfate [13,17,18]. The levels of salt concentration used for the treatment for wastewater containing organic pollutants by electrochemical method is markedly higher than that allowed by Italian legislation at the discharge point in rivers (e.g., Law 152/99 for Italy) [19,20].…”

Section: Introductionmentioning

confidence: 99%

Indirect Electrochemical Oxidation of Phenol in the Presence of Chloride for Wastewater Treatment

Rajkumar¹,

Kim

Palanivelu

2005

Chem. Eng. Technol.

137

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Electrochemical oxidation of phenol using a Ti/TiO 2 -RuO 2 -IrO 2 anode in the presence of chloride as the supporting electrolyte was investigated. The experiments were performed in an undivided batch reactor. Preliminary investigations showed that only a small fraction of phenol was oxidized by direct electrolysis, while complete degradation of phenol was achieved by indirect electrochemical oxidation using chloride as a supporting electrolyte. The effect of operating parameters such as initial pH, supporting electrolyte concentration, phenol concentration, and charge input was studied using Box-Behnken second order composite experimental design. The effect of current density on COD removal was studied separately. TOC removal and AOX formation were studied for selected conditions. It was found that the formation of chlorinated organic compounds was pronounced at the beginning of electrolysis, but it was reduced to lower levels by extended electrolysis.

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“…On noble metal electrodes, oxidation of these compounds is inhibited by the formation of polymer films on the surface [8]. However, oxidation may be carried out continuously on metal oxide electrodes, such as PbO 2 or SnO 2 , doped with various metals [9 Á/15] at suitable pH, temperature and concentrations [16,17]. Benzoquinone and maleic acid (ma) have been identified as intermediates during the mineralization reaction [18,19].…”

Section: Introductionmentioning

confidence: 99%