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Table 5 The effectiveness of factors in PBD and Taguchi design

From: Simultaneous elimination of Malachite Green, Rhodamine B and Cresol Red from aqueous sample with Sistan sand, optimized by Taguchi L16 and Plackett–Burman experiment design methods

Effectiveness Plackett-Burman design Taguchi design
MG RhB CR MG RhB CR
1 pH Initial dye concentration Initial dye concentration Adsorbent dosage Initial dye concentration Adsorbent dosage
2 Adsorbent dosage Ionic strength Adsorbent dosage pH Contact time Initial dye concentration
3 Contact time Contact time Ionic strength Ionic strength Ionic strength Ionic strength
4 Ionic strength Adsorbent dosage Contact time Initial dye concentration Adsorbent dosage Contact time
5 Initial dye concentration pH pH Contact time pH pH