Effect of low-concentration rhamnolipid biosurfactant on Pseudomonas aeruginosa transport in natural porous media.

ABSTRACT: The effect of low-concentrations of monorhamnolipid biosurfactant on transport of Pseudomonas aeruginosa ATCC 9027 in natural porous media (silica sand and a sandy soil) was studied with miscible-displacement experiments using artificial groundwater as the background solution. Transport of two types of cells was investigated, glucose- and hexadecane-grown cells with lower and higher cell surface hydrophobicity (CSH), respectively. The effect of hexadecane presence as a residual non-aqueous phase liquid (NAPLs) on transport was also examined. A clean-bed colloid deposition model was used to calculate deposition rate coefficients (k) for quantitative assessment. Significant cell retention was observed in the sand (81% and 82% for glucose- and hexadecane-grown cells, respectivel

SUBMITTER: Liu G 

PROVIDER: S-EPMC5607479 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature