Interaction Effect of Operating Parameters during Oxidation of Different Dyes via the Fenton Process. Application of the Plackett-Burmann Design

Abstract

The interaction effect of eight operating factors on the degradation of three organic dyes of different structures (Cibacron green, methylene blue and methyl orange) has been studied. Effect had been evaluated statistically using the Plackett-Burman screening design which ex-tracted valuable information on the most important parameters and their interactions. The goodness of the model fit was checked by the determination of the coefficient R2. The process factors, which affected the degradation efficiency of dyes, were then analyzed and illustrated; the most important valueі (p and F) for three dyes proved the validity of the model. The results of interactions between the factors allow to understand and study the impact of each parameter on the elimination of dyes and to distinguish the key factor to upgrade the efficiency of the Fenton process.