A Study on the Application of Surfactin to Remove N-Pentadecane from Contaminated Columns
Wicaksono, Gregoreus Aryo
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In this study, the potential application of Surfactin to oil-contaminated soil remediation was evaluated. The interfacial properties of Surfactin were reported first. An experimental column containing n-pentadecane-contaminated glass beads was then used to investigate the recovery efficiency for the oil by using Surfactin solution/foam flushing approaches. When water was used to flush a packed glass beads column containing npentadecane, the removal efficiency for oil was less than 1%. It is noted that the removal efficiency for n-pentadecane could be tremendously increased by using 1×10-4～ 3×10-4 M Surfactin solutions in the solution flushing process. However, the channeling effect seemed to result in the pronounced variation in the removal efficiency for n-pentadecane. If the column flushing experiments were performed by using the foams of Surfactin solutions, the removal efficiency for n-pentadecane could be further improved due to the less significant channeling effect.