Landfill-leachate effects on sorption of organic micropollutants onto aquifer materials
The effect of dissolved organic carbon as present in landfill leachate, on the sorption of organic micropollutants in aquifer materials was studied by laboratory batch and column experiments involving 15 non-polar organic chemicals, 5 landfill leachates and 4 aquifer materials of low organic carbon content. The experiments showed that hydrophobic organic micropollutants do partition into dissolved organic carbon found in landfill leachate potentially increasing their mobility. However, landfill leachate interacted with aquifer materials apparently increases the sorbent affinity for the hydrophobic micropollutants. The combination of these two mechanisms affected the observed distribution coefficients within a factor of two, in some cases increasing and in other cases decreasing the sorption of the chemicals. No means for prediction of the effect is currently available, but from a practical point of view, the effect of landfill leachate on retardation of organic micropollutants in aquifer material seems limited. (Copyright (c) 1992 Elsevier Science Publishers B.V.)
- Research Organization:
- Environmental Protection Agency, Ada, OK (United States). Robert S. Kerr Environmental Research Lab.
- OSTI ID:
- 7086217
- Report Number(s):
- PB-92-198597/XAB; EPA--600/J-92/235
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
540220* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
AQUIFERS
CONTAMINATION
DISPERSIONS
DISSOLUTION
ENVIRONMENTAL TRANSPORT
HYDROLOGY
LAND POLLUTION
LEACHATES
LEACHING
MANAGEMENT
MASS TRANSFER
MIXTURES
ORGANIC COMPOUNDS
POLLUTION
SEPARATION PROCESSES
SOLUTIONS
SORPTION
WASTE DISPOSAL
WASTE MANAGEMENT
WATER POLLUTION