Doehlert experimental design applied to electrochemical incineration of methyl green using boron-doped diamond anode

This work shows results obtained in the electrochemical incineration of a synthetic vinasse with initial chemical oxygen demand (COD) of 75.096 g L−1 in aqueous media (which resembles vinasse industrial wastewater). Electrolyses in a filter-press-type FM01-LC electrochemical reactor equipped with a three-dimensional (3D) boron doped diamond electrode (BDD) were performed at Reynolds values between 22 ≤ Re ≤ 109, and a fixed current density of 10 mA cm−2. The electrochemical incineration achieved up to 97% in vinasse mineralization with current efficiencies that surpass unity and energy consumption of 168 KW-h m−3, at Re =109. The mineralization of vinasse indicates that such degradation occurs via hydroxyl radicals formed by the oxidation of water on the BDD surface. Experimental data revealed that hydrodynamic conditions slightly influence the vinasse degradation rate and current efficiency, indicating that the oxidation involves a complex pathway.

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Chemometric study on the electrochemical incineration of nitrilotriacetic acid using platinum and boron-doped diamond anode

Chemosphere ◽

10.1016/j.chemosphere.2015.02.018 ◽

2015 ◽

Vol 130 ◽

pp. 1-7 ◽

Cited By ~ 4

Author(s):

Chunyong Zhang ◽

Zhenzhu He ◽

Jingyu Wu ◽

Degang Fu

Keyword(s):

Nitrilotriacetic Acid ◽

Boron Doped Diamond ◽

Boron Doped ◽

Electrochemical Incineration

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Electrochemical Incineration of Organic Pollutants on Boron-Doped Diamond Electrode. Evidence for Direct Electrochemical Oxidation Pathway

The Journal of Physical Chemistry B ◽

10.1021/jp030279g ◽

2003 ◽

Vol 107 (48) ◽

pp. 13389-13395 ◽

Cited By ~ 100

Author(s):

Jin-Fang Zhi ◽

Hai-Bin Wang ◽

T. Nakashima ◽

Tata N. Rao ◽

Akira Fujishima

Keyword(s):

Electrochemical Oxidation ◽

Organic Pollutants ◽

Boron Doped Diamond ◽

Oxidation Pathway ◽

Diamond Electrode ◽

Boron Doped ◽

Boron Doped Diamond Electrode ◽

Electrochemical Incineration

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Electrochemical incineration of cresols: A comparative study between PbO2 and boron-doped diamond anodes

Chemosphere ◽

10.1016/j.chemosphere.2008.11.050 ◽

2009 ◽

Vol 74 (10) ◽

pp. 1340-1347 ◽

Cited By ~ 94

Author(s):

Cristina Flox ◽

Conchita Arias ◽

Enric Brillas ◽

André Savall ◽

Karine Groenen-Serrano

Keyword(s):

Comparative Study ◽

Boron Doped Diamond ◽

Boron Doped ◽

Electrochemical Incineration

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Electrochemical Incineration of Phenolic Compounds from the Hydrocarbon Industry Using Boron-Doped Diamond Electrodes

International Journal of Photoenergy ◽

10.1155/2012/681875 ◽

2012 ◽

Vol 2012 ◽

pp. 1-6 ◽

Cited By ~ 11

Author(s):

Alejandro Medel ◽

Erika Bustos ◽

Karen Esquivel ◽

Luis A. Godínez ◽

Yunny Meas

Keyword(s):

Phenolic Compounds ◽

Fenton Process ◽

Complex Matrix ◽

Diamond Electrodes ◽

Boron Doped Diamond ◽

Diamond Electrode ◽

Boron Doped ◽

Boron Doped Diamond Electrode ◽

Complex Chemical Composition ◽

Electrochemical Incineration

Electrochemical incineration using boron-doped diamond electrodes was applied to samples obtained from a refinery and compared to the photo-electro-Fenton process in order to selectively eliminate the phenol and phenolic compounds from a complex matrix. Due to the complex chemical composition of the sample, a pretreatment to the sample in order to isolate the phenolic compounds was applied. The effects of the pretreatment and of pH on the degradation of the phenolic compounds were evaluated. The results indicate that the use of a boron-doped diamond electrode in an electrochemical incineration process mineralizes 99.5% of the phenolic sample content. Working in acidic medium (pH = 1), and applying 2 A at 298 K under constant stirring for 2 hours, also results in the incineration of the reaction intermediates reflected by 97% removal of TOC. In contrast, the photo-electro-Fenton process results in 99.9% oxidation of phenolic compounds with only a 25.69% removal of TOC.

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Electrochemical incineration of the antimicrobial sulfamethazine at a boron-doped diamond anode

Electrochimica Acta ◽

10.1016/j.electacta.2012.11.125 ◽

2013 ◽

Vol 90 ◽

pp. 254-264 ◽

Cited By ~ 42

Author(s):

Abdellatif El-Ghenymy ◽

Pere Lluís Cabot ◽

Francesc Centellas ◽

José Antonio Garrido ◽

Rosa María Rodríguez ◽

...

Keyword(s):

Boron Doped Diamond ◽

Boron Doped ◽

Electrochemical Incineration

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The electrochemical elimination of coliforms from water using BBD/Ti or graphite anodes: a comparative study

Water Science & Technology Water Supply ◽

10.2166/ws.2017.147 ◽

2017 ◽

Vol 18 (2) ◽

pp. 408-417

Author(s):

Edison GilPavas ◽

Paula Arbeláez ◽

José David Medina ◽

Izabela Dobrosz-Gómez ◽

Miguel Ángel Gómez-García

Keyword(s):

Experimental Design ◽

Anode Materials ◽

Oxidation Process ◽

Fecal Coliforms ◽

Statistical Experimental Design ◽

Nitrite Concentration ◽

Boron Doped Diamond ◽

Boron Doped ◽

Graphite Anodes ◽

Optimal Values

Abstract The elimination of total and fecal coliforms, from raw surface water, was carried out by electrochemical oxidation using either boron doped diamond (BDD/Ti) or graphite (GP) anodes, in a chloride-free medium. The optimal values of the operation parameters, maximizing the coliform elimination percentage, were determined using statistical experimental design. The current density (j: 2–20 mA/cm2), the conductivity (σ: 500–900 μS/cm) and the anode materials (An) were considered as variables to perform the Box-Behnken experimental design together with the response surface methodology analysis for optimization. The statistical analysis indicated that, in the evaluated range, the disinfection efficiency increased with an increase in j and decreased with an increase in σ. The following optimal conditions for the elimination of total and fecal coliforms were found: j: 10 mA/cm2, σ: 500 μS/cm and BDD/Ti used as anode material. The BDD/Ti electrode let to achieve complete coliform elimination after ca. 20 min of reaction while the GP one needed ca. 27 min. In water treated with both BDD/Ti and GP anode, after 7 days, any coliforms growth was observed. As a result of the oxidation process, the total organic carbon and nitrite concentration decreased while nitrate concentration increased.

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