Table 1. Proximate Compositions, Iodine Number, and N₂ Sorption Results of Raw OPT and OPT-Derived AC.

characteristics	raw OPT	OPT-derived AC
ash (%)	2.95	4.96
fixed carbon content (%)	24.62	80.18
moisture content (%)	9.80	0.33
volatile matter (%)	72.43	14.86
iodine number (mg g–1)		950.95
BET surface area (m2 g–1)	0.8886	1657.06
total pore volume (cm3 g–1)	0.0037	1.53
average pore diameter (nm)	42.4	4.75