The Gas-absorption/Chemical-reaction Method for Measuring Air-water Interfacial Area in Natural Porous Media.

ABSTRACT: The gas-absorption/chemical-reaction (GACR) method used in Chemical Engineering to quantify gas-liquid interfacial area in reactor systems is adapted for the first time to measure the effective air-water interfacial area of natural porous media. Experiments were conducted with the GACR method, and two standard methods (x-ray microtomographic imaging and interfacial partitioning tracer tests) for comparison, using model glass beads and a natural sand. The results of a series of experiments conducted under identical conditions demonstrated that the GACR method exhibited excellent repeatability for maintaining constant water saturation and for measurement of interfacial area (A_ia). Coefficients of variation for A_ia were 3.5% for the glass beads and 11% for the sand. Esti

SUBMITTER: Lyu Y 

PROVIDER: S-EPMC5898451 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature