Degradação fotoeletroquímica do corante azul QR 19 em solução aquosa

• Main Authors: Loraine C. V. Jacobs, Patricio G. Peralta-Zamora
• Format: Article
• Language: English
• Published: Sociedade Brasileira de Química 2012-01-01
• Series: Química Nova
• Subjects: photo-electrocatalysis; dyes; electrolytes
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422012000500006&lng=en&tlng=en

In this work the degradation capacity of a photo-electrocatalytic system was evaluated, mainly regarding the effect of the electrolyte solution on the degradation capacity toward a reactive textile dye. In the presence of NaCl the photo-electrochemical process shows high degradation efficiency, permitting almost total color removal in treatment of about 5 min. In view of the low degradation efficiency observed for the photocatalytic process it is possible to assume that the high degradation efficiency of the process is a function of electrochemical generation of oxidant active chlorine species, which are subsequently transformed to higher oxidant radical forms.