Mass Transfer Between Organic and Aqueous Phases: Investigations Using a Continuously Stirred Flow Cell.
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH
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Contaminant partitioning between organic and aqueous phases in porous media includes nonaqueous phase liquid NAPL dissolution and sorption by soil organic matter. Mass transport in the aqueous phase is governed by advection, but partitioning is a diffusion-controlled process. Since diffusion is usually slower than advective transport, dissolution and sorption are often subject to mass transfer rate limitations. Mass transfer is often modeled using a first-order, two-site model. Deficiencies of the two-site model include model parameters that are dependent on pore water velocity and an inability to predict slow, long-term desorption tailing.
- Physical Chemistry
- Inorganic Chemistry
- Organic Chemistry