Research Article

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

Figure 4

3D Plots for combined effects of variables: (a) pH and agitation time; (b) initial adsorbate concentration and agitation time; (c) pH and adsorbent dose on % adsorption of phenol on PSH surface.
842435.fig.004a
(a)
842435.fig.004b
(b)
842435.fig.004c
(c)