Fig. 9
![Fig. 9](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs42269-020-00456-z/MediaObjects/42269_2020_456_Fig9_HTML.png)
A cross-validation plot predicted response against actual values of response from selected factorial model on the removal of Nickel when tea bag residues are used as adsorbent
A cross-validation plot predicted response against actual values of response from selected factorial model on the removal of Nickel when tea bag residues are used as adsorbent