Iodine k-edge dual energy imaging reveals the influence of particle size distribution on solute transport in drying porous media.

ABSTRACT: Increasing salinity in groundwater and soil poses a threat to water and land resources. With the expectation of major changes to the hydrological cycle through climate change, the need for understanding the fundamental processes governing solute transport through soil has grown significantly. We provide experimentally verified insights into the influence of particle size distribution on solute transport in porous media during evaporation at the pore- and macro-scales. To do so, we utilized four-dimensional (space plus time) synchrotron X-ray tomography for iodine k-edge dual energy imaging to obtain solute concentration profiles in every single pore during saline water evaporation from coarse- and fine-grained sands. Close to the surface of the coarse-grained sand significantly higher salt

SUBMITTER: Shokri-Kuehni SMS 

PROVIDER: S-EPMC6048136 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature