Browsing by Author "Fatima Ahmad"

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    Ecofriendly dyeing of cotton fabric
    (University of Management and Technolog, 2017) Fatima Ahmad
    Exhaust method was used for the eco-friendly dyeing of cotton fabrics by using biodegradable salts such as sodium citrate along with soda ash. The experimental work carried out in the ratio of sodium citrate 2g, soda ash 3g, and reactive dye namely Blue R-Spenial 150% (Synozol), Red 6BN (Synozol), Ultra black G (Synozol) and Ultra wine DS (Synozol)0.4g with 100 ml of water. Soda ash was used to make the pH alkaline and for completion of reaction. The color fastness to laundering, crocking and light of all the dyed fabric specimen was found at good level by using biodegradable salt such as sodium citrate. The total dissolved of the effluent showed the better result with the lower value as compared to the non-biodegradable salt sodium chloride for the each reactive dyes. In the effluent the unfixed dye ratio is reduced by the use of biodegradable salt sodium citrate. So,in substitution of sodium chloride sodium citrate have been successfully employed to make the process ecofriendly