Abstract
Objectives: To study the reuse of dye effluents in order to minimize the dyeing cost. Methodology: In this study, the exhausted dye effluents were reused into 7 new dyeing baths along with 7 different percentages of dyes and chemicals to evaluate the color fastness properties as well as shade difference. Firstly, the exhausted dye effluents were collected from the dye bath of the standard sample after dyeing was completed. Then respectively added extra 80%, 70%, 60%, 50%, 40%, 20% and 0% of the dyes and chemicals in the 7 different new baths where dye effluents of standard sample dyeing existed. After dyeing, all the 7 samples were collected and tested with ISO methods for the assessment of color fastness to Wash and color fastness to Rubbing. Moreover, all the samples were analyzed against the standard one with the help of a Spectrophotometer. Findings: From the overall testing reports, it had found that color fastness to wash and rubbing were satisfactory for all samples. But the CMC decision revealed that the sample which was treated along with the presence of an extra 80% dyes and chemicals in dye effluents showed minimum shade difference from the standard sample. So, it can be said that about 20% of dyes and chemicals can be saved by reusing dye effluents which can largely influence not only the environmental issues but also the cost-effectiveness of dyeing industries. Keywords: Color Fastness; Cost-effectiveness; Dye Effluents; Environment; Reuse; Shade Difference
Highlights
In the traditional way of dyeing in textile industries, there were few approaches to environmental safety measures
Reuse of dye effluents in further dyeing process can make a tremendous turn in the dyeing industries, having a concern in mind about environmental risks along with minimization of dyeing cost
In this era of climatic climax, sustainable approaches for the development of textile processing are necessary for our future environment
Summary
In the traditional way of dyeing in textile industries, there were few approaches to environmental safety measures. Effluents from industries were discharged in the water sources These obnoxious steps lead us to a disastrous consequence in today’s earth. Reuse of dye effluents in further dyeing process can make a tremendous turn in the dyeing industries, having a concern in mind about environmental risks along with minimization of dyeing cost. In this era of climatic climax, sustainable approaches for the development of textile processing are necessary for our future environment. In the fabric coloration process because of using various dyes and pigments, dye molecules are permeated to the discharged effluents[3]. By the result of this study, a statement can be developed that without using ETP or WTP, we can partially recycle the wastewater from the dyeing bath and it can save around 20% of the dyeing cost in the dyeing industry
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