From: Surface complexation model for strontium sorption to amorphous silica and goethite
Final pH | Surface Area m2L-1 | Initial [Sr] M | Final [Sr] M | %Sr sorbed | Γ Sr sorbed Mol m-2 | Total Dissolved Carbonate M |
---|---|---|---|---|---|---|
Total Sr = 10-4 M aged for 2 days | ± 5% |  |  | |||
6.43 | 1299 | 1.10 × 10-4 | 1.06 × 10-4 | 3.9 | 3.34 × 10-9 | not measured |
6.85 | 1304 | 1.10 × 10-4 | 1.07 × 10-4 | 2.5 | 2.13 × 10-9 | not measured |
7.23 | 1307 | 1.10 × 10-4 | 1.08 × 10-4 | 1.8 | 1.49 × 10-9 | not measured |
7.62 | 1311 | 1.11 × 10-4 | 1.02 × 10-4 | 8.4 | 7.13 × 10-9 | not measured |
7.97 | 1309 | 1.11 × 10-4 | 1.03 × 10-4 | 6.8 | 5.71 × 10-9 | not measured |
8.29 | 1305 | 1.1 × 10-4 | 1.17 × 10-4 | -5.8 | -4.92 × 10-9 | not measured |
8.96 | 1304 | 1.10 × 10-4 | 6.18 × 10-4 | 43.7 | 3.68 × 10-8 | not measured |
9.28 | 1297 | 1.09 × 10-4 | 4.11 × 10-4 | 62.4 | 5.26 × 10-8 | not measured |
9.97 | 1278 | 1.08 × 10-4 | 2.30 × 10-5 | 78.8 | 6.68 × 10-8 | not measured |
Total Sr = 10-4 M aged for 14 days | ± 5% |  |  | |||
6.52 | 1478 | 1.11 × 10-4 | 1.09 × 10-4 | 1.9 | 1.43 × 10-9 | 1.47 × 10-4 |
7.03 | 1513 | 1.11 × 10-4 | 1.06 × 10-4 | 5.0 | 3.69 × 10-9 | 2.10 × 10-4 |
7.50 | 1523 | 1.12 × 10-4 | 1.01 × 10-4 | 9.5 | 6.97 × 10-9 | 3.76 × 10-4 |
8.12 | 1491 | 1.11 × 10-4 | 8.20 × 10-5 | 26.4 | 1.97 × 10-8 | 5.29 × 10-4 |
8.18 | 1507 | 1.11 × 10-4 | 6.84 × 10-5 | 38.4 | 2.83 × 10-8 | 6.38 × 10-4 |
9.19 | 1478 | 1.11 × 10-4 | 4.20 × 10-5 | 62.0 | 4.64 × 10-8 | 7.22 × 10-4 |
9.84 | 1484 | 1.10 × 10-4 | 2.17 × 10-5 | 80.2 | 5.93 × 10-8 | 8.93 × 10-4 |
10.59 | 1453 | 1.09 × 10-4 | 7.54 × 10-6 | 93.1 | 6.96 × 10-8 | 9.97 × 10-4 |
11.32 | 1416 | 1.06 × 10-4 | 2.15 × 10-6 | 98.0 | 7.34 × 10-8 | 1.07 × 10-3 |
Total Sr = 10-5 M aged for 2 days | ± 5% |  |  | |||
6.89 | 1301 | 1.17 × 10-5 | 9.81 × 10-6 | 16.4 | 1.48 × 10-9 | not measured |
7.18 | 1310 | 1.18 × 10-5 | 1.00 × 10-5 | 15.0 | 1.35 × 10-9 | not measured |
7.51 | 1309 | 1.18 × 10-5 | 9.49 × 10-6 | 19.6 | 1.77 × 10-9 | not measured |
7.86 | 1308 | 1.18 × 10-5 | 8.64 × 10-6 | 26.7 | 2.41 × 10-9 | not measured |
8.18 | 1304 | 1.18 × 10-5 | 7.36 × 10-6 | 37.4 | 3.37 × 10-9 | not measured |
8.76 | 1300 | 1.17 × 10-5 | 4.51 × 10-6 | 61.4 | 5.52 × 10-9 | not measured |
9.44 | 1293 | 1.16 × 10-5 | 3.45 × 10-6 | 70.4 | 6.34 × 10-9 | not measured |
10.05 | 1285 | 1.15 × 10-5 | 7.57 × 10-7 | 93.4 | 8.40 × 10-9 | not measured |
Total Sr = 10-5 M aged for 14 days | ± 5% |  |  | |||
6.60 | 1484 | 1.30 × 10-5 | 1.25 × 10-5 | 3.1 | 2.74 × 10-10 | 1.04 × 10-4 |
7.17 | 1482 | 1.30 × 10-5 | 1.27 × 10-5 | 2.4 | 2.09 × 10-10 | 2.08 × 10-4 |
8.36 | 1441 | 1.30 × 10-5 | 7.73 × 10-6 | 40.6 | 3.66 × 10-9 | 5.83 × 10-4 |
9.36 | 1488 | 1.29 × 10-5 | 2.06 × 10-6 | 84.1 | 7.30 × 10-9 | 8.14 × 10-4 |
9.92 | 1491 | 1.28 × 10-5 | 6.79 × 10-7 | 94.7 | 8.15 × 10-9 | 9.33 × 10-4 |
10.55 | 1485 | 1.27 × 10-5 | 1.33 × 10-7 | 99.0 | 8.46 × 10-9 | 1.08 × 10-3 |
Total Sr = 1.3 × 10-6 M aged for 2 days | (± 12%) |  |  | |||
6.28 | 1296 | 1.28 × 10-6 | 1.19 × 10-6 | 7.1 | 7.03E × 10-11 | not measured |
6.58 | 1302 | 1.29 × 10-6 | 1.31 × 10-6 | -1.5 | -1.50 × 10-11 | not measured |
7.08 | 1306 | 1.29 × 10-6 | 1.11 × 10-6 | 14.1 | 1.39 × 10-10 | not measured |
7.38 | 1131 | 1.27 × 10-6 | 1.11 × 10-6 | 12.6 | 1.41 × 10-10 | not measured |
7.65 | 1090 | 1.26 × 10-6 | 9.95 × 10-7 | 21.1 | 2.43 × 10-10 | not measured |
8.09 | 1057 | 1.25 × 10-6 | 7.21 × 10-7 | 42.4 | 5.02 × 10-10 | not measured |
8.78 | 1055 | 1.25 × 10-6 | 3.55 × 10-7 | 71.5 | 8.45 × 10-10 | not measured |
9.49 | 970 | 1.23 × 10-6 | 1.26 × 10-7 | 89.8 | 1.14 × 10-9 | not measured |
10.05 | 884 | 1.21 × 10-6 | 3.44 × 10-8 | 97.2 | 1.33 × 10-9 | not measured |