.... Controlling the formation of these air channels and enhancing diffusion surrounding them can considerably improve the effectiveness of air sparging. This work is a study on how electromagnetic (EM) waves—without a measureable increase in temperature—enhance the transport of a nonreactive dye in water...

...V. Goreham; C. B. Lake; P. K. Yuet This paper presents the application of a single reservoir diffusion test to determine both the effective porosity of a soil-cement matrix and the diffusivity of tritium through saturated, monolithic, cement solidified/stabilized wasteforms. Testing was performed...

...B. Hanumantha Rao; D. N. Singh Intact rock mass is the most suitable geological formation for disposing of hazardous wastes. Hence, for safety assessment, establishment of contaminant transport mechanism(s) in/through the rock mass becomes essential. Conventional diffusion cells have been employed...

...RK Rowe; CB Lake; RJ Petrov The apparatus and procedure for performing tests to obtain inorganic diffusion coefficients for Geosynthetic Clay Liners (GCLs) are described, and the processes (diffusion, anion exclusion and osmosis) that can affect the interpretation of these tests are discussed...

... water and 0.6 and 2.0 N NaCl), static-confining stresses, and hydrating mediums considered. Premature arrival of the salt solution front in the effluent (i.e., solute breakthrough) during fixed-ring hydraulic conductivity testing was explained as a probable diffusion-dominated transport mechanism...

... oedometric cell to study and to monitor different processes in geomaterials. The cell and the measuring devices are discussed, followed by a presentation of typical measurements conducted during consolidation, chemical diffusion, and cementation. The paper also includes a discussion of the most common...

...+ occurred due to ion exchange. The experimental data were analyzed using a phenomenological approach based on nondimensional analysis, analytical solution via Fourier series, and the root time method. The calculated diffusion parameters are presented and compared with the literature. References ASTM...

... transient insulation cooling one-dimensional diffusion References Abry , D. R. M. , Abry , R. G. F. , Ticknor , K. V. , and Vandergraaf , T. T. , 1982 , “ Procedure to Determine Sorption Coefficients of Radionuclides on Rock Coupons under Static Conditions ,” Technical Record...