Table 3 TCLP analysis of FeCr slag and the geopolymers (L/S 0.26, KOH 10 M, curing at ambient temperature, curing time 28 d)
Fe (ppm) | Zn (ppm) | Mn (ppm) | Ni (ppm) | Cr (ppm) | |
|---|---|---|---|---|---|
FeCr Slag | 550 | 10.4 | 20.5 | 4.34 | 320 |
GP0 | 26 | 0.31 | 0.26 | 0.18 | 11 |
GPS1 | 4 | 0.32 | 0.27 | 0.21 | 4.5 |
GPS2 | 27 | 0.38 | 0.38 | 0.22 | 11 |
GPS3 | 32 | 0.44 | 0.22 | 0.14 | 26 |
GPA1 | 13 | 0.38 | 0.24 | 0.28 | 1.6 |
GPA2 | 3 | 0.23 | 0.24 | 0.15 | 0.9 |
GPA3 | 16 | 0.37 | 0.26 | 0.29 | 4.9 |
Allowable Limits | 5 | 4 | 10 | 0.4 | 5 |