Removal of residual hexadecane from sand columns using neodol 25-9 and a biosurfactant isolated from Rhodococcus species H13-A

[摘要] The biosurfactant produced by a common soil isolate, Rhodococcus species H13-A (Rhodococcus erythropolis), is effective in removing residual hexadecane, a representative light non-aqueous phase liquid, from sand packed columns. Increased removal occurs at capillary numbers in the range of 10$sp{-3}$ to 10$sp{-2}$. While the results are inconclusive, the biosurfactant appears to increase mobilization of residual hexadecane comparable to a commercial surfactant, 1.2% (w/w) Neodol 25-9 in mineral salt solution, with a similar interfacial tension.

[发布机构] Rice University

[效力级别] engineering