Table 5 Analysis of variance for the removal efficiency.
Source | Sum of Squares | df | Mean Square | F-value | p-value | Significance |
|---|---|---|---|---|---|---|
Model | 9868.41 | 14 | 704.89 | 180.02 | < 0.0001 | S |
A-pH | 4198.64 | 1 | 4198.64 | 1072.31 | < 0.0001 | S |
B-adsorbent dose | 586.99 | 1 | 586.99 | 149.91 | < 0.0001 | S |
C-contact time | 49.24 | 1 | 49.24 | 12.57 | 0.0029 | S |
D-pollutant con. | 4413.30 | 1 | 4413.30 | 1127.13 | < 0.0001 | S |
AB | 9.63 | 1 | 9.63 | 2.46 | 0.1378 | NS |
AC | 0.0008 | 1 | 0.0008 | 0.0002 | 0.9891 | NS |
AD | 253.37 | 1 | 253.37 | 64.71 | < 0.0001 | S |
BC | 23.74 | 1 | 23.74 | 6.06 | 0.0264 | S |
BD | 35.02 | 1 | 35.02 | 8.94 | 0.0091 | S |
CD | 10.45 | 1 | 10.45 | 2.67 | 0.1232 | NS |
A² | 21.33 | 1 | 21.33 | 5.45 | 0.0339 | S |
B² | 98.02 | 1 | 98.02 | 25.03 | 0.0002 | S |
C² | 52.48 | 1 | 52.48 | 13.40 | 0.0023 | S |
D² | 16.84 | 1 | 16.84 | 4.30 | 0.0557 | NS |
Residual | 58.73 | 15 | 3.92 | |||
Lack of Fit | 48.32 | 10 | 4.83 | 2.32 | 0.1828 | NS |
Pure Error | 10.42 | 5 | 2.08 | |||
Cor Total | 9927.15 | 29 |
