Table 3.

The factorial design of experimental runs and conditions of activation of carbon with NaOH.

No.	Sample	Activation Temperature/°C	Impregnation Ratio (NaOH/biomass)/(g/g)	Activation Time/min
1	A 1	400	1.5	90
2	A 2	500	1.5	90
3	A 3	600	1.5	90
4	A 4	700	1.5	90
5	A 5	800	1.5	90
6	A 6	600	0.5	90
7	A 7	600	1.0	90
8	A 8	600	2.0	30
9	A 9	600	2.5	90
10	A 10	600	1.5	30
11	A 11	600	1.5	60
12	A 12	600	1.5	120
13	A 13	600	1.5	150