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Table 3 Optimum conditions for each factor to simultaneous removal of MG, RhB and CR

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

  pH Adsorbent dose NaCl added Contact time Initial dye concentration
S/N 3 2 3 2 3
Mean of mean 3 2 3 2 3