Research Article

Chemical Recycling of Expanded Polystyrene Waste: Synthesis of Novel Functional Polystyrene-Hydrazone Surface for Phenol Removal

Figure 3

Plots for validation of model for the uptake of phenol: (a) residuals versus predicted values; (b) observed versus predicted values; (c) % Normal Probability versus Residuals; (d) residuals versus run order.
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(a)
842435.fig.003b
(b)
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(c)
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(d)