Table 8 Optimal solutions
Cases | Optimum values of input variables | Optimum removal of Cr(VI) (%) | |||
|---|---|---|---|---|---|
pH (x1) | Inoculum size (%) (v/v) (x2) | Initial concentration (mg/L) (x3) | Time (day) (x4) | ||
Case 1 (IC: 5Â mg/L) | 7 | 10 | 5 | 14 | 39.24 |
Case 2 (IC: 10Â mg/L) | 7.23 | 10 | 10 | 14 | 52.04 |
Case 3 (IC: 15Â mg/L) | 8.7 | 10 | 15 | 14 | 73.44 |
Case 4 (IC: 20Â mg/L) | 9.06 | 10 | 20 | 14 | 75.48 |
Case 5 (IC: 25Â mg/L) | 7 | 10 | 25 | 14 | 58.36 |
Case 6 (IC: 30Â mg/L) | 7 | 9.15 | 30 | 8.57 | 42.89 |
Case 7 (IC: 5–30 mg/L) | 9.48 | 10 | 14.02 | 13.4 | 99.06 |