| Exp No |
Feedstock |
pH |
Temperature(°C) |
Pressure (atm) |
CaCO3 (aq) (mg/l) |
Mg/l Ba |
| |
CaCO3 (s)
(g/l) |
BaSO4 (s) (g/l) |
Predicted |
Determined |
|
|
Predicted |
Determined |
|
| |
Behavior of various parameters (see Figure 3) |
| 1.1 |
20 |
0 |
|
6.06 |
0 |
1 |
1458 |
2600 |
|
| |
Comparison of CaCO3 and BaSO4 when in contact with CO2; pH, Ca and Ba measures and predicted (Figure 4) |
| 1.2 |
20 |
0 |
|
6.03 |
10 |
1 |
1228 |
2050 |
- |
| 3.2 |
|
20 |
|
3.87 |
10 |
1 |
|
50 |
1.17 |
| |
Effect of BaSO4; pH, Ca and Ba measured and predicted (Figure 5) |
| 1.1 |
20 |
0 |
6.06 |
6.26 |
0 |
1 |
1458 |
2600 |
- |
| 2.1 |
6 |
14 |
6.01 |
6.01 |
0 |
1 |
1460 |
2801 |
2.39 |
| 1.2 |
20 |
0 |
6.26 |
6.29 |
10 |
1 |
1228 |
2050 |
- |
| 2.2 |
6 |
14 |
5.94 |
5.94 |
10 |
1 |
1230 |
2560 |
2.77 |
| Exp 1 |
Effect of temperature on CaCO3; pH and Ca predicted and measured (see Figure 6 and 7) |
| 1.1 |
20 |
0 |
6.06 |
6.26 |
0 |
1 |
1458 |
2600 |
- |
| 1.2 |
20 |
0 |
6.03 |
6.29 |
10 |
1 |
1228 |
2050 |
- |
| 1.3 |
20 |
0 |
6.01 |
6.58 |
25 |
1 |
946 |
800 |
- |
| 1.4 |
20 |
0 |
6.00 |
6.07 |
45 |
1 |
665 |
600 |
- |
| Exp 2 |
Effect of temperature on CaCO3 and BaSO4; pH, Ca and Ba predicted and measured (see Figure 6 and 8) |
| 2.1 |
6 |
14 |
6.06 |
6.01 |
0 |
1 |
1460 |
2810 |
2.39 |
| 2.2 |
6 |
14 |
6.03 |
5.94 |
10 |
1 |
1230 |
2560 |
2.77 |
| 2.3 |
6 |
14 |
6.01 |
5.98 |
25 |
1 |
947 |
1000 |
3.40 |
| 2.4 |
6 |
14 |
6.00 |
6.04 |
45 |
1 |
666 |
600 |
4.30 |
| Exp 4 |
Effect of pressure on CaCO3; pH and CaCO3 predicted (see Figure 9) |
| 4.1 |
20 |
0 |
- |
6.25 |
0 |
0.5 |
1108 |
- |
- |
| 4.2 |
20 |
0 |
- |
6.06 |
0 |
1 |
1458 |
- |
- |
| 4.3 |
20 |
0 |
- |
5.87 |
0 |
2 |
1926 |
- |
- |
| 4.4 |
20 |
0 |
- |
5.76 |
0 |
3 |
2271 |
- |
- |
| 4.5 |
20 |
0 |
- |
5.68 |
0 |
4 |
2553 |
- |
- |
| 4.6 |
20 |
0 |
- |
5.62 |
0 |
5 |
2798 |
- |
- |
| Exp 5 |
Effect of pressure on CaCO3 and BaSO4; pH, Ca and Ba predicted |
| 5.1 |
20 |
23.3 |
6.25 |
- |
0 |
0.5 |
1107 |
- |
2.18 |
| 5.2 |
20 |
23.3 |
6.06 |
- |
0 |
1 |
1457 |
- |
2.39 |
| 5.3 |
20 |
23.3 |
5.87 |
- |
0 |
2 |
1924 |
- |
2.63 |
| 5.4 |
20 |
23.3 |
5.76 |
- |
0 |
3 |
2268 |
- |
2.79 |
| .5 |
20 |
23.3 |
5.62 |
- |
0 |
5 |
2795 |
- |
2.74 |
