Fig. 6 (top) shows that high adsorption capacities ranging from
approximately 112 to 230 mgCPX gC
−1 were obtained (for CX and
AC, respectively). Similar values were reported for the adsorption
of acetaminophen on activated carbons,thatis, 113 to 267 mg gC
−1,
for a sample obtained from plastic waste and commercial material
produced from the physical activation of wood, respectively
[31]. However, lower values, ranging from 35 to 177 mg gC
−1, were
obtained for the adsorption of aniline on commercial activated
carbons, and from 48 to 103 mg gC
−1 for sulfanilic acid using the
same materials [22]. The amounts of aminetriazol adsorbed on
activated carbon fibres and activated carbons ranged from approximately
15 to 20 mg gC
−1 [29], which is much lower than what we
obtained for CPX. Previous works reported values ranging from 85 to 339 mg gC
−1 for phenol adsorption, 93 to 419 mg gC
−1 for aniline
and 209 to 3119 mg gC
−1 for nitrobenzene [17] on activated
carbons.