Analyses of semi-logarithmic and bilogarithmic correlations for various sewage sludge and WTR materials
| Material | Number of data points | Coefficient of determination, R 2 | |
|---|---|---|---|
| Semi-logarithmic (Figure 11(b)) | Bilogarithmic (Figure 11(c)) | ||
| Sewage sludge 1 | 16 | 0·9726 | 0·9855 |
| Alum WTR 1 | 10 | 0·9889 | 0·9909 |
| Alum WTR 2 | 10 | 0·9825 | 0·9721 |
| Alum WTR 3 | 9 | 0·9378 | 0·9559 |
| Alum WTR 4 | 13 | 0·9597 | 0·9698 |
| Alum WTR 5 | 5 | 0·9751 | 0·9691 |
| Alum WTR 6 | 5 | 0·9865 | 0·9986 |
| Material | Number of data points | Coefficient of determination, | |
|---|---|---|---|
| Semi-logarithmic ( | Bilogarithmic ( | ||
| Sewage sludge 1 | 16 | 0·9726 | 0·9855 |
| Alum WTR 1 | 10 | 0·9889 | 0·9909 |
| Alum WTR 2 | 10 | 0·9825 | 0·9721 |
| Alum WTR 3 | 9 | 0·9378 | 0·9559 |
| Alum WTR 4 | 13 | 0·9597 | 0·9698 |
| Alum WTR 5 | 5 | 0·9751 | 0·9691 |
| Alum WTR 6 | 5 | 0·9865 | 0·9986 |
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