Transport of dissolved organic macromolecules and their effect on the transport of phenanthrene in porous media

Journal Article · Thu Jan 31 23:00:00 EST 1991 · Environmental Science and Technology; (United States)

DOI:https://doi.org/10.1021/es00014a017· OSTI ID:5164565

Magee, B R; Lion, L W; Lemley, A T ^[1]

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1. Cornell Univ., Ithaca, NY (USA)

The retardation factor (R) of phenanthrene in a sand column was reduced by an average factor of 1.8 in the presence of dissolved organic matter (DOM) derived from soil, suggesting that a phenanthrene-DOM complex enhanced the transport of phenanthrene. Distribution coefficients (K{sub d}'s) were determined in batch and column studies for combinations of phenanthrene and DOM with sand. The retardation factor in the advective-dispersive transport equation was modified to reflect the pressure of a carrier by incorporating both the retardation and pore exclusion of the carrier itself. The best prediction of phenanthrene transport in the presence of DOM was provided by modeling the retardation by using two K{sub d}'s derived from column experiments of DOM alone and phenanthrene alone, along with the K{sub d} for phenanthrene binding to DOM. Sensitivity analyses indicated that the critical model parameters are the distribution coefficients for the hydrophobic pollutant binding to the stationary phase and binding to the carrier, as well as the carrier concentration.

• OSTI ID: 5164565
• Journal Information: Environmental Science and Technology; (United States), Journal Name: Environmental Science and Technology; (United States) Vol. 25:2; ISSN ESTHA; ISSN 0013-936X
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540220* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
AROMATICS
CONDENSED AROMATICS
DATA
ENVIRONMENTAL TRANSPORT
EXPERIMENTAL DATA
HYDROCARBONS
INFORMATION
MASS TRANSFER
MATERIALS
MEASURING METHODS
NUMERICAL DATA
ORGANIC COMPOUNDS
PHENANTHRENE
POROUS MATERIALS
RETENTION
SOILS