Synthesis and Characterisation of Activated Carbon Obtained from Marula (Sclerocarya birrea) Nutshell

Table 4

Physicochemical properties of Marula nutshell and commercial carbon.

Sample	Carbon (%)	pH	Moisture (%)	Ash (%)	Bulk density (gcm^−3)	Iodine value (mg/g)
Marula nut shell	38.2 ± 0.01^a	5.5 ± 0.1^a	8.4 ± 0.02^a	12.1 ± 0.1^a	0.64 ± 0.01^a	943.8 ± 0.01^a
Commercial carbon	76.9 ± 0.01^b	4.8 ± 0.1^a	0.1 ± 0.01^b	13.8 ± 0.2^a	0.54 ± 0.02^a	1034.3 ± 0.02^b
value	<0.05	<0.05	<0.05	ns	ns	<0.05

Mean ± standard deviations are reported. Means in a column with different superscripts (^a,b) are significantly different at .