The application of catalase for the elimination of hydrogen peroxide residues after bleaching of cotton fabrics.

Alexandra M Amorim,Mauro Scharf,Jürgen Andreaus,Marcelo D G Gasques

doi:10.1590/s0001-37652002000300006

Alexandra M Amorim, Mauro Scharf + Show 2 more

Open Access

https://doi.org/10.1590/s0001-37652002000300006

Copy DOI

Abstract

Results of dyeing of cotton fabrics with a bifunctional reactive dye were significantly improved when the fabric after bleaching with hydrogen peroxide was treated with catalase for the elimination of hydrogen peroxide residues from the fabrics. Compared to processes with a varying number of washing steps, with and without commercial reducing agents, the consumption of water could be significantly reduced, without altering the final color shade.

Highlights

In the last years biotechnological processes are gradually invading traditional industries like the textile industry
In the present work we studied the use of a catalase for the elimination of hydrogen peroxide residues originating from the bleaching process of cotton and its influence on dyeing with a bifunctional reactive dye of the monofluortriazinyl type
When added directly to the dyeing bath without previous washing, the catalase and the chemical reducer showed to be efficient in the elimination of the peroxide residues and improved significantly the color yield

Summary

Introduction

In the last years biotechnological processes are gradually invading traditional industries like the textile industry. In some cases they are substituting traditional processes, in other cases biotechnological products are used to produce new product properties. The principal advantages are associated to less severe reaction conditions, lower processing temperatures and non-toxic and biodegradable products. Due to their nature, enzymes increase selectively and significantly the reaction rate of a series of specific reactions (Vitolo and Filho 1995). The application of pectinases for biobleaching of cotton (Buschle-Diller et al 1998), proteases for wool processing (Heine and Hocke 1995, Bishop et al 1998), and catalases for hydrogen peroxide removal is still under investigation, but commercial products are already available (Pacheco 1998, Durán and Durán 2000)

Methods

Results

Conclusion