Enhanced transport of low-polarity organic compounds through soil by cyclodextrin

Journal Article · Sun May 01 04:00:00 EDT 1994 · Environmental Science and Technology; (United States)

DOI:https://doi.org/10.1021/es00054a030· OSTI ID:7202166

Brusseau, M L; Wang, X; Hu, Q ^[1]

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1. Univ. of Arizona, Tucson, AZ (United States)

The removal of low-polarity organic compounds from soils and aquifers by water flushing is often constrained by sorption interactions. There is great interest in developing systems that can enhance the transport of organic compounds through porous media, thus facilitating remediation. We investigated the potential of hydroxypropyl-[beta]-cyclodextrin (HPCD), a microbially produced compound, to reduce the sorption and to enhance the transport of several low-polarity organic compounds. The results show that cyclodextrin does not interact with the two porous media used in the study. As a result, there is no retardation of cyclodextrin during transport. The retardation of compounds such as anthracene, pyrene, and trichlorobiphenyl was significantly (orders of magnitude) reduced in the presence of cyclodextrin. The enhancement effect of the cyclodextrin was predictable with a simple equation based on three-phase partitioning. The nonreactive nature of cyclodextrin combined with its large affinity for low-polarity organic compounds makes cyclodextrin a possible candidate for use in in-situ remediation efforts. 22 refs., 6 figs., 3 tabs.

• OSTI ID: 7202166
• Journal Information: Environmental Science and Technology; (United States), Journal Name: Environmental Science and Technology; (United States) Vol. 28:5; ISSN ESTHAG; ISSN 0013-936X
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
54 ENVIRONMENTAL SCIENCES
540220* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
AFFINITY
ANTHRACENE
AQUIFERS
AROMATICS
CARBOHYDRATES
CHLORINATED AROMATIC HYDROCARBONS
COMPILED DATA
CONDENSED AROMATICS
CONTROL
DATA
DEXTRIN
ENVIRONMENTAL TRANSPORT
HALOGENATED AROMATIC HYDROCARBONS
HYDROCARBONS
IN-SITU PROCESSING
INFORMATION
LAND POLLUTION CONTROL
MASS TRANSFER
MATHEMATICAL MODELS
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PARTITION
POLLUTION CONTROL
POLYSACCHARIDES
POROSITY
PROCESSING
PYRENE
SACCHARIDES
SOILS
SORPTION
SURFACTANTS