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Ultrasound assisted biobleaching of cotton
- Publication Year :
- 2014
- Publisher :
- Kluwer Academic Publishers, 2014.
-
Abstract
- In this study, the effect of ultrasound on the activity of the glucose oxidase (GOx) enzyme for bleaching of the cotton fabrics was investigated. Hydrogen peroxide generation with the GOx enzyme from glucose was carried out under ultrasonic homogenizer (UH) and ultrasonic bath support. The aim of using ultrasonic support was to increase the yield of the enzyme reactions. The enzymatically generated hydrogen peroxide was used for bleaching of cotton fabrics. The bleaching process was performed at 90 °C and pH 11 (with NaOH) for 60 min, followed by rinsing at 70 and 50 °C then cold washing. The whiteness degrees of the cotton samples that were bleached by the generated peroxide were compared to the whiteness degrees of the conventionally bleached cotton fabrics. Sufficient whiteness degrees in cotton fabrics could be obtained by enzymatically generated hydrogen peroxide by UH support. The initial whiteness degree of the cotton fabric was 59.9 Stensby degrees; the whiteness was increased to 75.6 Stensby degrees by the GOx enzyme under UH support where the conventional bleaching process yielded a whiteness value of 76.7 Stensby degrees. For efficient cotton bleaching by the GOx enzyme, UH support contributed to the concentration of enzymatically generated hydrogen peroxide by the GOx enzyme. Bleaching of cotton by the GOx enzyme was approved as a more environmentally friendly process compared to the conventional bleaching method in respect of the results of chemical oxygen demand tests. © 2014 Springer Science+Business Media Dordrecht.
- Subjects :
- Ultrasonic homogenizer
Polymers and Plastics
genetic structures
Cotton
Peroxide-generation
Ultrasound assisted
Peroxide
Homogenizers
Enzymatic pretreatment
chemistry.chemical_compound
Glucose oxidase
Ultrasonics
Composite material
Hydrogen peroxide
biology
Chemistry
Cotton bleaching
Chemical oxygen demand
Enzymes
Peroxides
Bleaching
Glucose sensors
Glucose-oxidase
Enzyme reaction
Polymer science
Cotton Fabrics
Whiteness
Peroxide generations
Fabrics
Materials science, paper & wood
Glucose oxidases (GOx)
Cleaning
homogenizer
Cotton fabrics
Environmentally friendly process
Ultrasound
Homogenizer
Enzyme
Ultrasonic
Conventional bleaching
Hydrogen peroxide generation
Materials science
Bleaching process
Ultrasonic bath
Yield (chemistry)
biology.protein
sense organs
Materials science, textiles
Nuclear chemistry
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....bfec13cd626b2e66a8cf98f55ca87e47