Removal of reactive blue 21 and reactive red 195 dyes using horseradish peroxidase as catalyst

• Main Authors: S. Farias, D. de Oliveira, A. A. Ulson de Souza, S. M. A. Guelli U. de Souza, A. F. Morgado
• Format: Article
• Language: English
• Published: Brazilian Society of Chemical Engineering
• Series: Brazilian Journal of Chemical Engineering
• Subjects: Reactive dye; dye; unfixed reactive dyes; horseradish peroxidase
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322017000300701&lng=en&tlng=en

Abstract-Textile effluent is rich in hydrolyzed dyes that need to be removed. This study presents an evaluation of the potential of the enzyme horseradish peroxidase to remove the hydrolyzed dyes Reactive Blue 21 (RB 21) and Reactive Red 195 (RR 195) from cotton fiber and the effluent of the dyeing process. The parameters pH, dye concentration and temperature were evaluated to determine the optimal conditions to remove the dyes. The studies of removal of the dyeing effluent led to an increase of degradation for all tested colors. The use of the enzyme horseradish peroxidase as a biocatalyst can be a viable technological alternative to remove some hydrolyzed dyes.