Abstract
The textile dyes and fixing agents that used in dyeing process are major contributor to environmental pollution. In the present study, three different organic mordants (Sodium Citrate, Ammonium Acetate, and Potassium Acetate) are used in exhaust dyeing as mordants. Effect of mordant concentrations is studied on fastness properties (color change, rubbing fastness & light fastness) of cotton dyed with reactive dyes using these organic mordants. Comparison of these mordants with conventional fixing agent (NaCl) is also studied in order to evaluate the difference between fastness properties of conventional and organic salts used in this study. We found that the color fastness properties of conventional and organic salts are comparable, better in case of sodium citrate. Similarly color depth on fabric after dyeing with organic as well as inorganic salts is measured using data color. Results confirm that higher values of K/S are obtained for organic salts by using lower organic salt concentration compared to conventional salt. Reduction in total dissolved solids (TDS) of dye effluents is obtained from 6% to 29% for three organic salts as compared to conventional salt.
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