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

2003 ◽  
Vol 107 (48) ◽  
pp. 13389-13395 ◽  
Author(s):  
Jin-Fang Zhi ◽  
Hai-Bin Wang ◽  
T. Nakashima ◽  
Tata N. Rao ◽  
Akira Fujishima
2018 ◽  
Vol 122 (48) ◽  
pp. 27456-27461 ◽  
Author(s):  
Taiga Ogose ◽  
Seiji Kasahara ◽  
Norihito Ikemiya ◽  
Nagahiro Hoshi ◽  
Yasuaki Einaga ◽  
...  

2008 ◽  
Vol 58 (12) ◽  
pp. 2413-2419 ◽  
Author(s):  
J. L. Nava ◽  
A. Recéndiz ◽  
J. C. Acosta ◽  
I. González

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.


2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Alejandro Medel ◽  
Erika Bustos ◽  
Karen Esquivel ◽  
Luis A. Godínez ◽  
Yunny Meas

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.


2008 ◽  
Vol 19 (1) ◽  
pp. 150-156 ◽  
Author(s):  
C. A. Martínez-Huitle ◽  
S. Ferro ◽  
S. Reyna ◽  
M. Cerro-López ◽  
A. De Battisti ◽  
...  

2013 ◽  
Vol 62 (12) ◽  
pp. 2590-2594 ◽  
Author(s):  
D. A. Borisova ◽  
M. D. Vedenyapina ◽  
I. V. Krylova ◽  
A. K. Rakishev ◽  
D. Weichgrebe ◽  
...  

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