The electrooxidation of organic acids at boron-doped diamond electrodes

Chailapakul, O.; Popa, Elena; Tai, Hitoshi; Sarada, Bulusu V.; Tryk, Donald A.; Fujishima, Akira

doi:10.1016/s1388-2481(00)00049-7

Cited by 64 publications

(16 citation statements)

References 19 publications

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“…Compared with other electrode materials, conductive diamond has shown a higher stability and efficiency. Its performance in the treatment of wastewaters has been tested with a great variety of model pollutants including phenol,1–3 cyanide,4, 5 carboxylic acids,6–8 3‐methylpyridine,9 2‐naphthol,10–13 4‐chlorophenol,14–17 4‐chlorophenoxyacetic acid,18 2,4‐dinitrophenol,19 4‐nitrophenol,20 benzoic acid,21 polyacrylates,22 2,4‐dihydroxybenzoic acid,23 surfactants,24 chlorophenoxy herbicides,25 p ‐methoxyphenol,26 quinones,27 p ‐methoxytoluene,28 1,2‐diphenylethanes29 and dichloroaniline,30 aniline,31 trihydroxybenzenes32 and polyaromatic compounds 33. Boron‐doped diamond (BDD) achieves in most cases the complete removal of organics contained in the wastes by mineralization (formation of carbon dioxide) or transformation of the organics into volatile species which desorb from the waste.…”

Section: Introductionmentioning

confidence: 99%

Treatment of Fenton‐refractory olive oil mill wastes by electrochemical oxidation with boron‐doped diamond anodes

Cañizares

Martínez

Paz

et al. 2006

J of Chemical Tech & Biotech

105

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In this work, the electrochemical oxidation of an actual industrial waste with conductive diamond anodes has been studied. The wastewater is the effluent of a wastewater treatment plant consisting of a Fenton reactor followed by a settler and a sand filter, in which the wastes generated in an olive oil mill are treated. These wastes contain a residual chemical oxygen demand of nearly 700 mg dm −3 which cannot be further oxidized with the Fenton process. The electrolyses were carried out under galvanostatic conditions, using a bench-scale plant equipped with a single-compartment electrochemical flow cell. Boron-doped diamond (BDD) and stainless steel (AISI 304) were use as anode and cathode of the cell, respectively. The complete mineralization of the waste was obtained with high current efficiencies limited only by mass transport processes. This confirms that besides the hydroxyl radical-mediated oxidation that occurs in the Fenton process, the electrochemical oxidation with conductive diamond electrodes combines other important oxidation processes such as direct electro-oxidation on the BDD surface and oxidation mediated by other electrochemically formed compounds generated in this electrode.

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Section: Introductionmentioning

confidence: 99%

Treatment of Fenton‐refractory olive oil mill wastes by electrochemical oxidation with boron‐doped diamond anodes

Cañizares

Martínez

Paz

et al. 2006

J of Chemical Tech & Biotech

105

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“…For electrochemical application it has been found that BDD electrodes possess very low background current density, a wide potential window in aqueous solution and good activity toward some redox systems [5][6][7][8][9][10][11][12]. The surface of BDD electrodes is hydrogen terminated without any pretreatment, which is a very stable surface with superior electrochemical characteristics compared with other carbon forms, for example, glassy carbon and highly oriented pyrolitic graphite.…”

Section: Introductionmentioning

confidence: 99%

Ruthenium tris(2,2′)bipyridyl-modified oxidized boron-doped diamond electrode for the determination of Vitamin B6 in the presence of Vitamins B1 and B2

Lei

Yang

et al. 2005

Sensors and Actuators B: Chemical

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“…Also, electrochemical treatment of other bioresistant organic pollutants such as aliphatic compounds was investigated by few researches using BDD anodic oxidation. Additionally, the electrochemical oxidation, especially anodic oxidation on BDD and other anodes of oxalic, acetic, maleic, fumaric, formic and tartaric acids (Canizares et al 2003(Canizares et al , 2008Chailapakul et al 2000;Drogui et al 2007;Gandini et al 2000;Ivandini et al 2006;Kapalka et al 2008c;Martinez-Huitle et al 2008;Onofrio et al 2008) was previously studied. These previous studies (Canizares et al 2003;Gandini et al 2000;Ivandini et al 2006;Martinez-Huitle et al 2008;Onofrio et al 2008) showed that oxalic acid was completely transformed into CO 2 and H 2 O in most cases, which is encouraging to test the feasibility of this process for destruction of succinic acid.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical oxidation of succinic acid in aqueous solutions using boron doped diamond anodes

Bensalah

Louhichi

Abdel‐Wahab

2011

Int. J. Environ. Sci. Technol.

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In this work, the electrochemical oxidation of succinic acid on boron-doped diamond (BDD) anodes was investigated. Voltammetric study had shown that no peaks appeared in the region of electrolyte stability which indicates that succinic acid oxidation can take place at a potential close to the potential region of electrolyte oxidation. Galvanostatic electrolyses achieved total chemical oxygen demand (COD) removals and high mineralization yields under different operating conditions (initial COD, current density and nature of supporting electrolyte). Oxalic, glycolic and formic acids were the main intermediates detected during anodic oxidation of succinic acid on BDD electrode and carbon dioxide as the final product. The mean oxidation state of carbon reached the value of 4 at the end of electrolysis which is indicative of mineralization of almost all organics present in aqueous solution. The exponential profile of COD versus specific electrical charge has shown that mass transfer is the limiting factor for the kinetics of electrochemical process. A simple mechanism was proposed for the mineralization of succinic acid. First, hydroxyl radicals attack of succinic acid leading to formation of glycolic, glyoxylic, fumaric and maleic acids. Then, theses acids undergo rapid and non-selective oxidation by hydroxyl radicals to be transformed into oxalic and formic acids which leads to further oxidation steps to mineralize these acids into carbon dioxide and water.

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The electrooxidation of organic acids at boron-doped diamond electrodes

Cited by 64 publications

References 19 publications

Treatment of Fenton‐refractory olive oil mill wastes by electrochemical oxidation with boron‐doped diamond anodes

Treatment of Fenton‐refractory olive oil mill wastes by electrochemical oxidation with boron‐doped diamond anodes

Ruthenium tris(2,2′)bipyridyl-modified oxidized boron-doped diamond electrode for the determination of Vitamin B6 in the presence of Vitamins B1 and B2

Electrochemical oxidation of succinic acid in aqueous solutions using boron doped diamond anodes

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