Application of Monod Equation and First-Order Rate Kinetics for the Calculation of Crude Oil Concentration Along Depths of Stagnant Freshwater and Saltwater Media
In this research, the Monod equation and first-order rate kinetics were utilized to ascertain the rate of total petroleum hydrocarbon (TPH) concentration at different depths. By integrating the developed distribution and deterioration model utilizing the initial rate of degradation and the Monod equ...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2025-01-01
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| Series: | International Journal of Chemical Engineering |
| Online Access: | http://dx.doi.org/10.1155/ijce/7780310 |
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| Summary: | In this research, the Monod equation and first-order rate kinetics were utilized to ascertain the rate of total petroleum hydrocarbon (TPH) concentration at different depths. By integrating the developed distribution and deterioration model utilizing the initial rate of degradation and the Monod equation q2, the diffusion of TPH in stagnant water media was examined. The total bacterial count (TBC) in both water types showed a gradual increase until the 56th day, followed by a sudden spike between the 70th and 80th days. While the levels of TPHs varied at various depths, they exhibited a consistent decrease over time. Freshwater was more significantly impacted by crude oil compared to saltwater. The diffusion model utilizing first-order rate kinetics demonstrated a superior fit to the experimental data compared to the alternative employing the Monod equation, suggesting that the Monod equation may not be the most appropriate rate parameter for the diffusion model. Despite the decrease in the rate of oil sedimentation with depth, the developed model outperformed the modified Stokes and Newton equations and closely matched the suspended solids’ data from the experiment. Both models are effective for studying oil sedimentation in calm water. Additionally, the slow reduction in TPH levels after crude oil contamination and the water’s physicochemical changes indicate a prolonged natural degradation process. However, the introduction of specific bacteria through bio-augmentation could expedite TPH breakdown. |
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| ISSN: | 1687-8078 |