Eletrodegradação de Ponceau 2R utilizando ânodos dimensionalmente estáveis e Ti/Pt Electrodegradation of Ponceau 2R using dimensionally-stable anodes and Ti/Pt
oleh: Francisco Wirley Paulino Ribeiro, Sâmeque do Nascimento Oliveira, Pedro de Lima-Neto, Adriana Nunes Correia, Lúcia Helena Mascaro, Roberto de Matos, Ernesto Chaves Pereira de Souza, Marcos Roberto de Vasconcelos Lanza
| Format: | Article |
|---|---|
| Diterbitkan: | Sociedade Brasileira de Química 2013-01-01 |
Deskripsi
<abstract language="eng">This paper reports the electrochemical degradation of the azo dye Ponceau 2R under galvanostatic electrolysis in the 1 to 200 mA cm-2 range at room temperature using dimensionally-stable anodes of oxygen (DSA-O2), chlorine (DSA-Cl2) and a titanium electrode of platinum coated with platinum oxide (Ti/Pt). The methodology applied was efficient for removing the color of the Ponceau 2R and the highest percentage removal of total organic carbon was obtained at 200 mA cm-2. Despite not having been observed complete mineralization, approximately80% removal of aromatic rings was estimated, resulting in drastic reduction of toxicity of the sample.