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Changes of four components in crude oil before and after biotreatment under different crude oil concentrations.
| Add the crude oil concentration (m/v) | Saturated hydrocarbon (mt, %) | Aromatic hydrocarbon (mt, %) | Resins (mt, %) | Asphaltene (mt, %) |
|---|---|---|---|---|
| Blank | 65.15 | 16.16 | 5.81 | 5.81 |
| 2.0% | 61.13 | 23.19 | 5.32 | 10.35 |
| 4.0% | 59.49 | 26.89 | 2.03 | 11.60 |
| 6.0% | 62.46 | 24.40 | 6.26 | 10.88 |
Note: The dates are average value of three parallel experiments. Change ratio (%) = (wDegraded − wOriginal)/wOriginal.
