Transport of GenX in Saturated and Unsaturated Porous Media.

ABSTRACT: The objective of this research was to investigate the retention and transport behavior of GenX in five natural porous media with similar median grain diameters but different geochemical properties. Surface tensions were measured to characterize surface activity. Miscible-displacement experiments were conducted under saturated conditions to characterize the magnitude of solid-phase adsorption, while unsaturated-flow experiments were conducted to examine the impact of air-water interfacial adsorption on retention and transport. The results from surface-tension measurements showed that the impact of solution composition is greater for the ammonium form of GenX than for the acid form, due to the presence of the NH₄ counterion. The breakthrough curves for the experiments conducted un

SUBMITTER: Yan N 

PROVIDER: S-EPMC7654438 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature