Statistical Design and Optimization of Cr (VI) Adsorption onto Native and HNO₃/NaOH Activated Cedar Sawdust Using AAS and a Response Surface Methodology (RSM).

It is clear from the ANOVA results ( Table 3 ) that the model was highly significant and meaningful with a very low probability value ( p < 0.01) and high SS for all responses, which can appropriately explain the relationship between each response and independent variable.

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