Peroxidases can be used in the decolorization process. There is a growing interest for new sources of this enzyme and for obtaining economically viable processes. In this work, a low-cost vegetable peroxidase extraction process is proposed; the resulting enzyme is characterized to determine its optimum pH, temperature, and stability conditions, and it is then applied in the decolorization of reactive dye Remazol Turquoise G 133%. The turnip peroxidase (TP) was utilized as an enzymatic source. This enzyme exhibited maximum activity at pH 7.0, and it was active in the temperature range of 30 to 50 °C, which favors its use in industrial processes. Acetone was the most efficient solvent to induce precipitation. The removal of Remazol Turquoise G 133% was 56.0% complete after 50 min, while 41.0% of the same dye was removed with the commercial horseradish peroxidase enzyme in 50 min. TP presents potential as a viable alternative in the decolorization of textile wastewaters.
Obtention of plant peroxidase and its potential for the decolorization of the reactive dye Remazol Turquoise G 133%
Maria Cristina Silva, Juliana Arriel Torres, Angelita Duarte Corrêa, Allana Maria Bernardes Junqueira, Maria Teresa Pessoa Amorim, Custódio Donizete dos Santos; Obtention of plant peroxidase and its potential for the decolorization of the reactive dye Remazol Turquoise G 133%. Water Sci Technol 1 February 2012; 65 (4): 669–675. doi: https://doi.org/10.2166/wst.2012.892
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