| pH = 6 | pH = 5 | pH = 4 | pH = 3 |
Time (min) | Lead recovery % | Lead recovery % | Lead recovery % | Lead recovery % |
10 | 44.39 | 48.52 | 53.24 | 47.53 |
20 | 62.01 | 63.29 | 71.03 | 63.68 |
30 | - | - | 78.79 | - |
40 | 81.62 | 84.48 | 84.66 | 81.50 |
60 | 95.54 | 96.89 | - | 94.06 |
90 | 99.93 | 99.92 | - | 100 |