High Pressure Injection of Chemicals in a Gravel Beach
AbstractThe remediation of beaches contaminated with oil includes the application of surfactants and/or the application of amendments to enhance oil biodegradation (i.e., bioremediation). This study focused on evaluating the practicability of the high pressure injection (HPI) of dissolved chemicals into the subsurface of a lentic Alaskan beach subjected to a 5 m tidal range. A conservative tracer, lithium, in a lithium bromide (LiBr) solution, was injected into the beach at 1.0 m depth near the mid-tide line. The flow rate was varied between 1.0 and 1.5 L/min, and the resulting injection pressure varied between 3 m and 6 m of water. The concentration of the injected tracer was measured from four surrounding monitoring wells at multiple depths. The HPI associated with a flow rate of 1.5 L/min resulted in a Darcy flux in the cross-shore direction at 1.15 × 10−5 m/s compared to that of 7.5 × 10−6 m/s under normal conditions. The HPI, thus, enhanced the hydraulic conveyance of the beach. The results revealed that the tracer plume dispersed an area of ~12 m2 within 24 h. These results suggest that deep injection of solutions into a gravel beach is a viable approach for remediating beaches.
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Geng, X.; Abdollahi-Nasab, A.; An, C.; Chen, Z.; Lee, K.; Boufadel, M.C. High Pressure Injection of Chemicals in a Gravel Beach. Processes 2019, 7, 525.
Geng X, Abdollahi-Nasab A, An C, Chen Z, Lee K, Boufadel MC. High Pressure Injection of Chemicals in a Gravel Beach. Processes. 2019; 7(8):525.Chicago/Turabian Style
Geng, Xiaolong; Abdollahi-Nasab, Ali; An, Chunjiang; Chen, Zhi; Lee, Kenneth; Boufadel, Michel C. 2019. "High Pressure Injection of Chemicals in a Gravel Beach." Processes 7, no. 8: 525.
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