|
| pH = 1.5 | pH = 2.0 | pH = 4.0 | pH = 6.0 | |||||||||
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| Initial Conc. ±0.7 | Final Conc. ±0.02 | % Removal ±0.7 | Initial Conc. ±0.5 | Final Conc. ±0.03 | % Removal ±1.0 | Initial Conc. ±1.5 | Final Conc. ±1.0 | % Removal ±0.07 | Initial Conc. ±0.7 | Final Conc. ±0.6 | % Removal ±0.05 | |
| Total Cr | Original | 104.3 | 24.3 | 76.7 | 100 | 7.9 | 92.1 | 107.4 | 94.7 | 11.8 | 98.5 | 98.7 | 0 |
| Powdered | 104.3 | 25.9 | 75.2 | 100 | 4.2 | 95.8 | 107.4 | 87.3 | 18.7 | 98.5 | 95.5 | 3.0 | |
| Cr(VI) | Original | 103.0 | 2.20 | 97.9 | 96.7 | 3.1 | 96.8 | 100 | 92.2 | 7.8 | 99.3 | 100.1 | 0 |
| Powdered | 103.0 | 5.50 | 94.7 | 96.7 | 9.7 | 90.0 | 100 | 88.3 | 11.7 | 99.3 | 100.7 | 0 | |