Preparation and Characterization of Activated Carbon Obtained from Plantain (Musa paradisiaca) Fruit Stem

Table 3

The effect of different activation methods on surface (oxygen containing) functional groups of carbon samples.

GROUPS	CPZAC	CPPAC	UPC
Carboxylic (meq/g)	0.08	0.09	0.09
Lactones (meq/g)	0.10	0.08	0.13
Phenols (meq/g)	0.02	0.03	0.05
Total basic sites (meq/g)	2.51	1.62	0.68

Results are based on one-time analysis.
CPZAC = carbonized plantain zinc chloride activated carbon, CPPAC = carbonized plantain phosphoric acid activated carbon, and UPC = untreated plantain carbon.