Removal of Zinc from Aqueous Solution by Optimized Oil Palm Empty Fruit Bunches Biochar as Low Cost Adsorbent

Table 6

Results of surface area and pore characterization of optimized RSM OPEFB biochar.

Material	BET surface area ()	Micropore surface area ()	Micropore volume ()	Mesopores volume ()	Total pore volume ()	Average pore diameter (Å)	Reference
RSM optimized OPEFB biochar	421.26	347.09	0.13	0.018	0.15	14.41	Present study
OPEFB biochar (300°)	44.38	7.80	0.003	0.317	0.32	28.84	Preliminary study