Title
Determination of influential factors in reactive dye wash-off process using Plackett-Burman experimental design
Authors
IULIA STANESCU ANISOARA BERTEA ANCA BUTNARU LILIANA ROZEMARIE MANEA and ANDREI-PETRU BERTEA

Received March 4, 2015
Published Volume 51 Issue 5-6 May-June
Keywords cotton, exhaust reactive dyeing, wash-off, Plackett-Burman design

Abstract
As water consumption in the final wash-off of reactive dyeing of cotton is significant, this study tries to identify the steps of the process that can be left out in order to save water. Plackett-Burman screening design was used to identify the factors that influence the reactive dye removal in the rinsing process. The experimental design has eleven factors, where each factor is set at two levels, and 20 trial runs were conductedin the study. The analysis of variance, which was used to examine the results, showed that in the case of the mono-chlorotriazinyl dye all the factors, except the third overflow rinse, last hot soaping and last neutralization baths,have statistical significant impact on the hydrolyzed dye removal, while for the di-chlorotriazinyl dye the insignificant factors were the two neutralization baths. The results would lead to further experimentation for thorough investigation of the significant factors and their interaction effects.