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Table 5 Effluent fluid chemistry

From: Thermally driven fracture aperture variation in naturally fractured granites

Experiment Test conditions Incremental concentrations and effluent fluid volume
\({P}_{\text{co}\_\text{r}}\) (MPa) \(T_\text{i}\) (\(^\circ\)C) \(T_\text{f}\) (\(^\circ\)C) \(\Delta\)t (h) Al (ppm) Ca (ppm) Fe (ppm) K (ppm) Na (ppm) Mg (ppm) Si (ppm) Volume (\(\text {cm}^{3}\))
\(\#\)N14-S1 20 25 110 70 0.00 0.41 0.01 1.07 2.34 0.04 1.31 213
110 25 44 0.00 0.16 0.01 a 0.09 0.00 0.54 132
\(\#\)N14-S2 30 25 110 85 b 0.05 0.00 a b b 0.32 255
110 25 52 b 0.13 b a b b 0.28 156
\(\#\)N14-S3 40 25 140 83 0.01 0.06 0.00 a b b 3.14 249
\(\#\)N19-C1 20 25 110 51 0.00 0.73 0.02 1.59 7.93 0.14 1.45 154
110 25 41 0.00 0.25 0.05 0.73 0.89 0.05 0.88 122
\(\#\)N19-C2 30 25 110 67 0.00 0.15 0.00 0.29 0.30 0.02 0.44 202
110 25 34 0.01 0.15 0.04 0.69 0.47 0.03 1.33 101
  1. aBelow detection limit     
  2. bUndetectable increment