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Research approaches on the use of ecotechnologies like ozone assisted processes for the decolorization of textiles are being explored as against the conventional alkaline reductive process for the color stripping of the cotton textiles. The evaluation of these ecotechnologies must be performed to assess the environmental impacts. Partial “gate to gate” Life Cycle Assessment (LCA) was implemented to study the ozone based decolorization process of the reactive dyed cotton textiles. Experiments were performed to determine input and output data flows for decolorization treatment of reactive dyed cotton textile using the ozonation process. The functional unit was defined as “treatment of 40 g of reactive dyed cotton fabric to achieve more than 94% color stripping”. Generic and specific data bases were also used to determine flows, and International Life Cycle Data system (ILCD) method was selected to convert all flows into environmental impacts. The impact category “Water resource depletion” is the highest for all the ozonation processes as it has the greatest relative value after normalization amongst all the impact indicators. Electricity and Oxygen formation were found to be the major contributors to the environmental impacts. New experimental conditions have been studied to optimize the impacts.
Ajinkya Powar; Anne Perwuelz; Nemeshwaree Behary; Le Hoang; Aussenac Thierry; Carmen Loghin; Stelian Maier; Jinping Guan; Guoqiang Chen. Environmental Profile Study of Ozone Decolorization of Reactive Dyed Cotton Textiles by Utilizing Life Cycle Assessment. Sustainability 2021, 13, 1225 .
AMA StyleAjinkya Powar, Anne Perwuelz, Nemeshwaree Behary, Le Hoang, Aussenac Thierry, Carmen Loghin, Stelian Maier, Jinping Guan, Guoqiang Chen. Environmental Profile Study of Ozone Decolorization of Reactive Dyed Cotton Textiles by Utilizing Life Cycle Assessment. Sustainability. 2021; 13 (3):1225.
Chicago/Turabian StyleAjinkya Powar; Anne Perwuelz; Nemeshwaree Behary; Le Hoang; Aussenac Thierry; Carmen Loghin; Stelian Maier; Jinping Guan; Guoqiang Chen. 2021. "Environmental Profile Study of Ozone Decolorization of Reactive Dyed Cotton Textiles by Utilizing Life Cycle Assessment." Sustainability 13, no. 3: 1225.
Color stripping is one of the most convenient ways to rectify the various shade faults occurred during printing or dyeing process of textiles. But, the conventional chemical assisted process poses serious risk of the environmental pollution. Secondly, the chemical recycling of the cellulosic fibers may be disrupted due to the presence of the impurities like colorants, finishes, and the additives in the discarded textiles. So, there is a need to study ways to remove such impurities from the discarded cellulosic textiles in a sustainable manner. This work examines the decolorization of the pigment prints on cellulosic fabrics at pilot scale using an ozone-assisted process. The effect of varying pH, ozone concentration and the treatment time on the decolorization of the pigment prints was optimized using the response surface methodology technique. The effects of ozonation process parameters on the mechanical properties of cellulosic cotton fabric were measured. Decolorization of pigment printed samples was studied with respect to the surface effects by a scanning electron microscopy (SEM), and the chemical removal effects of ozonation treatment were studied using X-ray photoelectron spectroscopy. The possible mechanism regarding the action of ozone for the decolorization is discussed.
Ajinkya Powar; Anne Perwuelz; Nemeshwaree Behary; Le Vinh Hoang; Thierry Aussenac; Carmen Loghin; Stelian Sergiu Maier; Jinping Guan; Guoqiang Chen. Investigation into the color stripping of the pigment printed cotton fabric using the ozone assisted process: A study on the decolorization and characterization. Journal of Engineered Fibers and Fabrics 2021, 16, 1 .
AMA StyleAjinkya Powar, Anne Perwuelz, Nemeshwaree Behary, Le Vinh Hoang, Thierry Aussenac, Carmen Loghin, Stelian Sergiu Maier, Jinping Guan, Guoqiang Chen. Investigation into the color stripping of the pigment printed cotton fabric using the ozone assisted process: A study on the decolorization and characterization. Journal of Engineered Fibers and Fabrics. 2021; 16 ():1.
Chicago/Turabian StyleAjinkya Powar; Anne Perwuelz; Nemeshwaree Behary; Le Vinh Hoang; Thierry Aussenac; Carmen Loghin; Stelian Sergiu Maier; Jinping Guan; Guoqiang Chen. 2021. "Investigation into the color stripping of the pigment printed cotton fabric using the ozone assisted process: A study on the decolorization and characterization." Journal of Engineered Fibers and Fabrics 16, no. : 1.
The decolorization of a cotton fabric dyed with a reactive dye (C.I. Reactive Black 5) was studied using an optimized ozone-assisted process at pilot scale. Box–Behnken design was used to evaluate the effects of three parameters on the decolorization of the dyed textile, namely, pH of the treatment (3–7), ozone concentration (5–85 g/m3 of ozone), and treatment time (10–50 min). The fitted mathematical model allowed us to plot response surfaces as well as isoresponse curves and to determine optimal decolorization conditions. In this study, we have proposed a pilot-scale machine which utilizes ozone for the color stripping of the dyed cotton. This pilot-scale application opens up the route for application of ozone at an industrial scale for achieving sustainability in the textile industry.
Ajinkya Sudhir Powar; Anne Perwuelz; Nemeshwaree Behary; Levinh Hoang; Thierry Aussenac. Application of Ozone Treatment for the Decolorization of the Reactive-Dyed Fabrics in a Pilot-Scale Process—Optimization through Response Surface Methodology. Sustainability 2020, 12, 471 .
AMA StyleAjinkya Sudhir Powar, Anne Perwuelz, Nemeshwaree Behary, Levinh Hoang, Thierry Aussenac. Application of Ozone Treatment for the Decolorization of the Reactive-Dyed Fabrics in a Pilot-Scale Process—Optimization through Response Surface Methodology. Sustainability. 2020; 12 (2):471.
Chicago/Turabian StyleAjinkya Sudhir Powar; Anne Perwuelz; Nemeshwaree Behary; Levinh Hoang; Thierry Aussenac. 2020. "Application of Ozone Treatment for the Decolorization of the Reactive-Dyed Fabrics in a Pilot-Scale Process—Optimization through Response Surface Methodology." Sustainability 12, no. 2: 471.