Pilot scale mineralization of organic acids by electro-Fenton ® process plus sunlight exposure

Juan Casado; Jordi Fornaguera; Maria Isabel Galán

doi:10.1016/j.watres.2006.04.047

Pilot scale mineralization of organic acids by electro-Fenton ^® process plus sunlight exposure

Juan Casado, Jordi Fornaguera, Maria Isabel Galán

Research output: Contribution to journal › Article › Research › peer-review

17 Citations (Scopus)

Abstract

The viability of the electro-Fenton ® degradation of aqueous solutions of benzoic acid, 2,4-dichlorophenoxyacetic acid and oxalic acid has been studied at 20 A using a pilot flow reactor containing an anode and an oxygen diffusion cathode, both of 100 cm 2 section. Pollutants were preferentially oxidized by hydroxyl radicals formed in solution from reaction of Fe 2+ with electrogenerated H 2 O 2 , allowing mineralization of benzoic acid and 2,4-D. For oxalic acid no electrochemical mineralization was observed. After electrolysis, samples of the different effluents were exposed to sunlight (Helielectro-Fenton process) and almost complete mineralization was reached after ca. 30-50 min without additional cost. Effects of parameters such as electrolysis time, pH and solar irradiation time on the process efficiencies were studied. © 2006 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	2511-2516
Journal	Water Research
Volume	40
Issue number	13
DOIs	https://doi.org/10.1016/j.watres.2006.04.047
Publication status	Published - 1 Jul 2006

Keywords

Electro-Fenton
Electrochemical mineralization
Helielectro-Fenton
Organic acids
Pilot reactor
Wastewater treatment

Access to Document

10.1016/j.watres.2006.04.047

Cite this

@article{170ad9a971c84111b5222b6c469dbd89,

title = "Pilot scale mineralization of organic acids by electro-Fenton {\textregistered} process plus sunlight exposure",

abstract = "The viability of the electro-Fenton {\textregistered} degradation of aqueous solutions of benzoic acid, 2,4-dichlorophenoxyacetic acid and oxalic acid has been studied at 20 A using a pilot flow reactor containing an anode and an oxygen diffusion cathode, both of 100 cm 2 section. Pollutants were preferentially oxidized by hydroxyl radicals formed in solution from reaction of Fe 2+ with electrogenerated H 2 O 2 , allowing mineralization of benzoic acid and 2,4-D. For oxalic acid no electrochemical mineralization was observed. After electrolysis, samples of the different effluents were exposed to sunlight (Helielectro-Fenton process) and almost complete mineralization was reached after ca. 30-50 min without additional cost. Effects of parameters such as electrolysis time, pH and solar irradiation time on the process efficiencies were studied. {\textcopyright} 2006 Elsevier Ltd. All rights reserved.",

keywords = "Electro-Fenton, Electrochemical mineralization, Helielectro-Fenton, Organic acids, Pilot reactor, Wastewater treatment",

author = "Juan Casado and Jordi Fornaguera and Gal{\'a}n, {Maria Isabel}",

year = "2006",

month = jul,

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doi = "10.1016/j.watres.2006.04.047",

language = "English",

volume = "40",

pages = "2511--2516",

journal = "Water Research",

issn = "0043-1354",

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TY - JOUR

T1 - Pilot scale mineralization of organic acids by electro-Fenton ® process plus sunlight exposure

AU - Casado, Juan

AU - Fornaguera, Jordi

AU - Galán, Maria Isabel

PY - 2006/7/1

Y1 - 2006/7/1

N2 - The viability of the electro-Fenton ® degradation of aqueous solutions of benzoic acid, 2,4-dichlorophenoxyacetic acid and oxalic acid has been studied at 20 A using a pilot flow reactor containing an anode and an oxygen diffusion cathode, both of 100 cm 2 section. Pollutants were preferentially oxidized by hydroxyl radicals formed in solution from reaction of Fe 2+ with electrogenerated H 2 O 2 , allowing mineralization of benzoic acid and 2,4-D. For oxalic acid no electrochemical mineralization was observed. After electrolysis, samples of the different effluents were exposed to sunlight (Helielectro-Fenton process) and almost complete mineralization was reached after ca. 30-50 min without additional cost. Effects of parameters such as electrolysis time, pH and solar irradiation time on the process efficiencies were studied. © 2006 Elsevier Ltd. All rights reserved.

AB - The viability of the electro-Fenton ® degradation of aqueous solutions of benzoic acid, 2,4-dichlorophenoxyacetic acid and oxalic acid has been studied at 20 A using a pilot flow reactor containing an anode and an oxygen diffusion cathode, both of 100 cm 2 section. Pollutants were preferentially oxidized by hydroxyl radicals formed in solution from reaction of Fe 2+ with electrogenerated H 2 O 2 , allowing mineralization of benzoic acid and 2,4-D. For oxalic acid no electrochemical mineralization was observed. After electrolysis, samples of the different effluents were exposed to sunlight (Helielectro-Fenton process) and almost complete mineralization was reached after ca. 30-50 min without additional cost. Effects of parameters such as electrolysis time, pH and solar irradiation time on the process efficiencies were studied. © 2006 Elsevier Ltd. All rights reserved.

KW - Electro-Fenton

KW - Electrochemical mineralization

KW - Helielectro-Fenton

KW - Organic acids

KW - Pilot reactor

KW - Wastewater treatment

U2 - 10.1016/j.watres.2006.04.047

DO - 10.1016/j.watres.2006.04.047

M3 - Article

VL - 40

SP - 2511

EP - 2516

JO - Water Research

JF - Water Research

SN - 0043-1354

IS - 13