5
Table 5. Results of geomechanical tests of geopolymerized tailings samples
Sample Acidity potential (AP) Neutralization potential (NP) Net neutralization potential (NNP) NP/AP
R5 27.03 5.47 -21.56 0.20
RR5 17.19 3.94 -13.24 0.23
RR5-R1 4.55 107.24 102.69 23.57
RR5-R2 5.76 87.60 81.84 15.20
RR5-R3 6.32 79.61 73.29 12.60
RR5-R5 6.82 86.68 79.85 12.70
RR5-R8 6.47 86.24 79.76 13.32
RR5-R9 7.28 81.19 73.91 11.16
Table 6. Results of the leaching tests of the geopolymerized samples
Cu Zn Fe Cr Cd Pb
RR5 0.19 6.22 0.450 0.010 0.572 0.160 0.004 0.238
RR5-R1 14.86 10.54 0.159 0.079 4.562 0.251 0.039 0.398
RR5-R2 14.41 10.53 0.103 0.056 5.352 0.374 0.041 0.450
RR5-R3 16.11 10.85 0.043 0.030 2.298 0.229 0.052 0.355
RR5-R5 15.03 10.72 0.070 0.019 2.909 0.268 0.046 0.385
RR5-R8 13.91 10.65 0.184 0.053 7.780 0.201 0.043 0.303
RR5-R9 14.60 10.72 0.151 0.093 8.780 0.159 0.049 0.210
Sample
Condusctivity
(uS.cm -2 )
pH
mg/L
Figure 3. Comparison of metal leaching percentages in geopolymerized samples
Table 7. Metal leaching percentages in the geopolymerized samples
Sample %Cu %Zn %Fe %Cr %Cd %Pb
RR5 1.5 0.1 0.2 13.5 1.8 3.4
RR5-R1 2.0 3.1 0.5 78.7 68.9 21.3
RR5-R2 1.0 1.7 0.5 92.6 57.6 19.0
RR5-R3 0.6 0.5 0.2 55.9 54.5 13.8
RR5-R5 0.4 0.8 0.2 49.3 63.5 13.1
RR5-R8 1.6 1.5 0.7 44.2 53.4 11.4
RR5-R9 1.2 2.3 0.7 31.1 54.1 7.0
Table 5. Results of geomechanical tests of geopolymerized tailings samples
Sample Acidity potential (AP) Neutralization potential (NP) Net neutralization potential (NNP) NP/AP
R5 27.03 5.47 -21.56 0.20
RR5 17.19 3.94 -13.24 0.23
RR5-R1 4.55 107.24 102.69 23.57
RR5-R2 5.76 87.60 81.84 15.20
RR5-R3 6.32 79.61 73.29 12.60
RR5-R5 6.82 86.68 79.85 12.70
RR5-R8 6.47 86.24 79.76 13.32
RR5-R9 7.28 81.19 73.91 11.16
Table 6. Results of the leaching tests of the geopolymerized samples
Cu Zn Fe Cr Cd Pb
RR5 0.19 6.22 0.450 0.010 0.572 0.160 0.004 0.238
RR5-R1 14.86 10.54 0.159 0.079 4.562 0.251 0.039 0.398
RR5-R2 14.41 10.53 0.103 0.056 5.352 0.374 0.041 0.450
RR5-R3 16.11 10.85 0.043 0.030 2.298 0.229 0.052 0.355
RR5-R5 15.03 10.72 0.070 0.019 2.909 0.268 0.046 0.385
RR5-R8 13.91 10.65 0.184 0.053 7.780 0.201 0.043 0.303
RR5-R9 14.60 10.72 0.151 0.093 8.780 0.159 0.049 0.210
Sample
Condusctivity
(uS.cm -2 )
pH
mg/L
Figure 3. Comparison of metal leaching percentages in geopolymerized samples
Table 7. Metal leaching percentages in the geopolymerized samples
Sample %Cu %Zn %Fe %Cr %Cd %Pb
RR5 1.5 0.1 0.2 13.5 1.8 3.4
RR5-R1 2.0 3.1 0.5 78.7 68.9 21.3
RR5-R2 1.0 1.7 0.5 92.6 57.6 19.0
RR5-R3 0.6 0.5 0.2 55.9 54.5 13.8
RR5-R5 0.4 0.8 0.2 49.3 63.5 13.1
RR5-R8 1.6 1.5 0.7 44.2 53.4 11.4
RR5-R9 1.2 2.3 0.7 31.1 54.1 7.0