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Table 4 Full factorial experimental matrix for fluoride removal displayed in percentage

From: Fluoride removal from aqueous solution onto activated carbon of Catha edulis through the adsorption treatment technology

Experiment # Dose (mg/100 L) pH Time Actual % Predicted %
1 0.5 2 60 56.7 60.0
2 1 2 60 68.0 63.4
3 1.5 2 60 73.0 66.8
4 0.5 7 60 45.3 48.8
5 1 7 60 50.0 52.3
6 1.5 7 60 51.7 55.7
7 0.5 9 60 40.7 42.6
8 1 9 60 49.3 46.1
9 1.5 9 60 49.7 49.5
10 0.5 2 90 61.7 58.5
11 1 2 90 65.0 61.9
12 1.5 2 90 66.7 65.4
13 0.5 7 90 46.7 47.3
14 1 7 90 46.0 50.8
15 1.5 7 90 49.7 54.2
16 0.5 9 90 46.3 41.2
17 1 9 90 43.3 44.6
18 1.5 9 90 49.0 48.0
19 0.5 2 120 57.0 57.0
20 1 2 120 64.0 60.5
21 1.5 2 120 63.0 63.9
22 0.5 7 120 43.7 45.6
23 1 7 120 47.0 49.3
24 1.5 7 120 50.0 52.7
25 0.5 9 120 40.3 39.7
26 1 9 120 45.7 43.1
27 1.5 9 120 49.7 46.5