Publication
OPTIMISATION OF THE DYEBATH PH VALUE FOR REDUCING THE ACIDITY OF THE WASTEWATER IN THE PROCESS OF DYEING THE POLYESTER FABRIC WITH DISPERSE DYES
(Stef92 Technology, 2011-06-20, Milena Miljković)
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Dyeing of polyester fabric is carryng out in slightly acidic me dium; the dyebath pH value is adjusted to 4.5 – 5.5, which resu lts in the huge amount of acidic industrial wastewater. In this paper, dyeing of polyest er knitwear with four disperse dyes in the pH range 4.5 – 7, in order to reduce the amount of acid used in the dyeing process, was investigated. Colour differences between the samples dyed at pH 6.0 and 7.0 and one dyed at pH 4.5 were asseessed using the technique of reflectiometry and expressed i...
Ecology and Environmental Protection2011