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A Novel Enzymatic Stripping of CI Reactive Black B Dyed Knitted Textiles Fabric as an Environmentally Responsible Technology

In the present study, we developed a novel ligninolytic enzymes based treatment for color stripping of cotton fabric. Knitted fabric was dyed with CI Reactive Black B dye to 2, 4 and 6% shades strengths. All the three shade were subjected to pre-optimized chemical and biological stripping processes, separately. In biological stripping, the fabrics were treated with ligninolytic enzymes extract produced from Ganoderma lucidum IBL-05 under optimum solid state fermentation conditions. The ligninolytic enzymes extract contained lignin peroxidase (944 ± 36.21 U/mL), manganese peroxidase (472 ± 12.11 U/mL) and laccase (94 ± 3.76 U/mL) as major enzyme activities. The effluents generated in the two processes were analyzed for various water quality parameters. The effluents from biological stripping were transparent whereas the dark blue colored effluents were generated in chemical stripping. The effluents generated in the chemical stripping process were highly polluted as compared to that obtained from the biological process in terms of pH, TSS, DO, BOD, COD and TOC values. Most of the water quality parameters of biological stripping effluents were in the recommended range of National Environment Quality Standards (NEQS) for industrial waste water, whereas, the values of these parameters were significantly higher for chemical stripping effluents suggesting that biological stripping is environment responsive technology for recycling of faulty dyed and old fabric.


Shahzad Ali Shahid Chatha, Muhammad Asgher, Hafiz M.N. Iqbal Shaukat Ali

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