Intensification of the bio‐processing of cotton textiles by combined enzyme/ultrasound treatment

Abstract

Utilization of highly speci®c enzymes for various textile-processing applications is becoming increasingly popular because of their ability to replace harsh organic/inorganic chemicals currently used by the textile industry. Thus, a signi®cant decrease in the amount and toxicity of textile wastewater ef¯uents is achievable. It was established that ultrasound does not inactivate the complex structures of enzyme molecules and as a consequence there was signi®cant improvement in the performance of both cellulase and pectinase enzymes. The experimental data indicate that the maximum bene®t provided by sonication occurs at relatively low enzyme concentrations. Ultrasonic energy signi®cantly intensi®ed enzymatic activity on various types of cotton fabrics, but it did not contribute to a decrease in tensile strength. The combined enzyme/sonication treatment of cellulosic textiles offers signi®cant advantages such as less consumption of expensive enzymes, shorter processing time, less ®ber damage and better uniformity of treatment. Published in

Emerging Green Technologies and Environment Friendly Products for Sustainable Textiles

“…The high rate of mass transfer in textile processing steps has been studied as an alternative to conventional methods [59,60]. Yachmenev et al [61] have reported that a combined treatment of enzyme/sonication on cellulosic textiles offers significant advantages such as less consumption of expensive enzymes, shorter processing time, less fiber damage, and better uniformity of treatment. Perelshtein et al [62] successfully produced antibacterial cotton using an ultrasound technique for coating cotton by MgO and Al 2 O 3 nanoparticles.…”

Yellowing tendency of ozonated cotton fabric and ways to prevent this undesirable side effect

“…However, efforts have been made to find substitutes for toxic chemicals used in textile processing (Chen & Burns, 2006). Consequently, several new technologies (ozone, ultrasound, ultraviolet and enzymes) or materials have started to be used for reducing the production of waste by-product and air and water pollution (Arumugam, 2005;Lenting & Warmoeskerken, 2004;Moholkar, Nierstrasz, & Warmoeskerken, 2003;Perincek, 2006;Perincek, Bahtiyari, Körlü, & Duran, 2007a, 2008Perincek, Duran, Körlü & Bahtiyari, 2007b;Rogers, Jeon, & Svenson, 2005;Yachmenev, Bertoniere, & Blanchard, 2002;Yachmenev, Blanchard, & Lambert, 2004Perincek et al, 2008.…”

Plasma-Aided Cotton Bioscouring: Dielectric Barrier Discharge Versus Low-Pressure Oxygen Plasma

“…Research on cotton bioscouring so far has focused on how to overcome this problem. Pretreatments before pectinase scouring-including boiling water [13], beta-cyclodextrin [14] and mechanical piercing [15], and simultaneous processes with pectinase in one bath such as reverse micellar system [16], organic solvent [17] and ultrasound [18][19][20] have been extensively investigated to improve the accessibility of pectinases to the substrates on cotton fibers and some positive results were published. However, these methods almost have some disadvantages to some extent involving special equipments, energy consumption, processing cost, environmental problem and so on.…”