| Mass of Fly Ash (grams) | Sample 2 Concentration of Iron in ppm | |||
| Before treatment | After Treatment Run 1 | After treatment Run 2 | Average of 2 runs | |
| 4 | 0.085 | 0.000 | 0.000 | 0.000 ± 0.000 |
| 8 | 0.085 | 0.000 | 0.000 | 0.000 ± 0.000 |
| 10 | 0.085 | 0.000 | 0.000 | 0.000 ± 0.000 |