Effective Factor Analysis for Chromium(VI) Removal from Aqueous Solutions and Its Application to Tunçbilek Lignite Using Design of Experiments

Table 1

Results of short and elemental analysis of activated carbon samples.

Sample	Volatile compound (%)	Fixed carbon^(a) (%)	Ash^(a) (%)	C^(b) (%)	H^(b) (%)	^(b) (%)	(S + O)^(b) (%)
Raw material	34.01	39.81	26.18	40.00	4.67	3.06	52.27
PAC	5.26	42.61	50.18	89.72	0.10	5.22	4.96
CAC	9.38	63.43	27.19	62.90	0.87	5.37	30.86

^(a)Dry; ^(b)dry-ashless.