2008•Dyeing & FinishingRequires access
Reuse of acid dyeing effluent of polyamide
Haiyu Xu
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Abstract
Polyamide was dyed with trichromatic acid dye.The dyeing effluent was collected and adjusted to the same parameters as the initial dye bath,and was reused several times at the same processing condition.K/S values,dye uptake,and color fastness were tested and compared with the initial sample.The results showed that color difference between samples dyed with reused effluent and the initial sample reached above 4 grades,and color fastness of them were approximate.