Water absorption by organics: survey of laboratory evidence and evaluation of UNIFAC for estimating water activity

Article Abstract:

It is possible to estimate the water content of water-soluble atmospheric organic material using the Universal Quasi Chemical Functional Group Activity Coefficients Model (UNIFAC). This information enables the simulation of the thermodynamics of the gas-particle distribution and formation of atmospheric condensible organics. The UNIFAC technique enables water activity levels to be estimated to within 15%.

Absorption

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Desorption and mineralization of phenanthrene and chrysene in contaminated soils

Article Abstract:

The sorption kinetics of hydrophobic organic compounds in soils are conjectured to have an impact on microbial metabolism or vice versa. In order to determine the existence of such impact, the research used a static, slurry phased microcosm to examine the relative rates of desorption and mineralization for spiked concentrations of phenanthrene and chrysene on two previously contaminated soils.

Research and Development in the Physical, Engineering, and Life Sciences, Pollution R&D NEC, Pollution, Soils, Microbial metabolism, Pollution control research

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