Response surface methodology for optimization of methylene blue adsorption onto carboxymethyl cellulose-based hydrogel beads: adsorption kinetics, isotherm, thermodynamics and reusability studies.

Here the adsorbent dosage ( X 1 ), pH value ( X 2 ), initial dye concentration ( X 3 ) and their quadratic terms ( X 1 2 , X 2 2 and X 3 2 ) to which was added two interaction terms ( X 1 X 2 and X 2 X 3 ) have p -value less than 5% and hence selected as exceedingly significant model terms.

also in 76 other papers