Table 4.
Sand-pack column test for biosurfactant produced by P. aeruginosa PBS
| Parameters | Sand-pack column test | Mean ± SD | ||
|---|---|---|---|---|
| Trial 1 | Trial 2 | Trial 3 | ||
| PV (mL) | 30.0 | 29.5 | 30.0 | 29.83 ± 0.29 |
| IOS (mL) | 18.5 | 18.0 | 18.0 | 18.17 ± 0.29 |
| IOS (%) | 61.67 | 61.02 | 60.00 | 60.90 ± 0.84 |
| SOR (mL) | 2.6 | 2.2 | 2.7 | 2.50 ± 0.26 |
| SOR (%) | 14.05 | 12.22 | 15.00 | 13.76 ± 1.41 |
| ROS (mL) | 15.9 | 15.8 | 15.3 | 15.67 ± 0.32 |
| ROS (%) | 85.95 | 87.78 | 85.00 | 86.24 ± 1.41 |
| AOR (mL) | 9 | 8.6 | 8.8 | 8.80 ± 0.20 |
| AOR (%) | 56.6 | 54.43 | 57.52 | 56.18 ± 1.59 |
PV pore volume, IOS initial oil saturation, SOR secondary oil recovery after water flooding, ROS residual oil saturation, AOR additional oil recovery, IOS% percent initial oil saturation, SOR% percent secondary oil recovery, ROS% percent residual oil saturation, AOR% percent additional oil recovery