Degradação eletroquímica da vinhaça usando eletrodo de diamante dopado com boro

The degradation of vinasses in aqueous solution from ethanol industry has been investigated by electrochemical oxidation using a boron doped diamond electrode (BDD). Samples of vinasses were electrolyzed in medium of (0.1 mol L-1) Na2SO4 solutions at controlled potentials of +2.4, +3.0 and +4.0 V (v...

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Published inQuímica Nova Vol. 34; no. 9; pp. 1517 - 1520
Main Authors Batista, Eveline Cristine, Oliveira, Robson Tadeu Soares de, Ferreira, Rafael de Queiroz, Miwa, Douglas, Santos, Mauro Coelho dos
Format Journal Article
LanguageEnglish
Published Sociedade Brasileira de Química 01.09.2011
Subjects
boron doped diamond electrode
electrochemical degradation
vinasses
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Summary:The degradation of vinasses in aqueous solution from ethanol industry has been investigated by electrochemical oxidation using a boron doped diamond electrode (BDD). Samples of vinasses were electrolyzed in medium of (0.1 mol L-1) Na2SO4 solutions at controlled potentials of +2.4, +3.0 and +4.0 V (vs. Ag/AgCl) and exhibited considerable reduction of total organic carbon. The cyclic voltammetry studies indicate that the vinasses are oxidized irreversibly over the BDD at 2.0 V (vs. Ag/AgCl) in diffusion controlled process. From the experimental results it is clear that the BDD electrode can be a valuable tool to the electrochemical degradation of vinasses in practical applications
ISSN:0100-4042
1678-7064
DOI:10.1590/S0100-40422011000900007