Modeling partitioning and transport interactions between natural organic matter and polynuclear aromatic hydrocarbons in groundwater

Journal Article · Sun Aug 01 04:00:00 EDT 1993 · Environmental Science and Technology; (United States)

DOI:https://doi.org/10.1021/es00045a009· OSTI ID:6759485

Liu, H; Amy, G ^[1]

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1. Univ. of Colorado, Boulder, CO (United States)

The influences of aqueous-phase natural organic matter (NOM) and solid-phase (mineral-phase) NOM on the partitioning and transport of polynuclear aromatic hydrocarbons (PAH) were studied in both batch and column experiments. The column experiments were conducted in two stages. In the first stage, the soil matrix was simulated with quartz, with which NOM does not interact; the effect of aqueous-phase NOM on PAH transport was studied in such a soil matrix. In the second stage, the soil matrix was simulated with quartz coated with aluminum oxide (mixed bed), with which NOM can interact (sorb); the effect of soil-phase NOM on PAH water solubility, NOM source, and Darcy velocity on PAH transport were also addressed. Data from the column experiments were modeled with a one-dimensional advection-dispersion transport model (CFITIM) to independently estimate partition coefficients as well as retardation factors and kinetic parameters. Observations based on the results of experiments include the following: (1) the interaction between PAH and NOM is NOM source dependent, and the interaction between PAH and minerals is mineralogy dependent, (2) aqueous-phase NOM facilitates PAH transport, and (3) solid-phase NOM retards PAH transport. 33 refs., 10 figs., 8 tabs.

• OSTI ID: 6759485
• Journal Information: Environmental Science and Technology; (United States), Journal Name: Environmental Science and Technology; (United States) Vol. 27:8; ISSN ESTHAG; ISSN 0013-936X
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540220* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
AROMATICS
BENCH-SCALE EXPERIMENTS
ENVIRONMENTAL TRANSPORT
GROUND WATER
HYDROCARBONS
HYDROGEN COMPOUNDS
MASS TRANSFER
MATHEMATICAL MODELS
MATTER
ORGANIC COMPOUNDS
ORGANIC MATTER
OXYGEN COMPOUNDS
POLLUTION
POLYCYCLIC AROMATIC HYDROCARBONS
SOILS
SORPTIVE PROPERTIES
SURFACE PROPERTIES
WATER