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

Table 5

Comparative adsorption capacities of PS based materials for the removal of phenol.

Adsorbent	Capacity (mmolg^−1)	References
Amberlite XAD-4	0.259	[10]
Acetyl-Amberlite XAD-4	0.420	[10]
Amberlite XAD-7	0.795	[12]
Amberlite IRA96C	0.636	[17]
Methylamino-Hypercrosslinked styrene-DVB (PS)	0.820	[21]
Phenol hydroxyl-PS	0.636	[22]
N-0	1.153	[23]
N-1	1.358	[23]
N-2	1.013	[23]
PSH	1.873 and 1.962	This work

NJ-0: Hypercrosslinked PS-DVB resin with 5.49% residual chloromethyl groups.
NJ-1: NJ-0 with dimethylamine group.
NJ-2: NJ-0 with timethylamine group.