Sorption of polychlorodibenzo-p-dioxins to soils from water and water/methanol mixtures

Thesis/Dissertation · Thu Jan 01 00:00:00 EST 1987

OSTI ID:6995709

Guiseppi-Elie, A

The sorption of polychlorodibenzo-p-dioxins (PCDDs) from water and water/methanol mixtures was evaluated by batch shake testing. The primary objectives of this work were (1) to evaluate the applicability of the cosolvent theory to the sorption of dioxins to soils from water/methanol mixtures and (2) to utilize the cosolvent theory to obtain extrapolated estimates of the water-phase partition coefficients for the PCDDs. The CDD isomers studied were 2,3,7,8-tetra, 1,2,3,4,7-penta, 1,2,3,4,7,8-hexa, 1,2,3,4,6,7,8-hepta and octa. Six uncontaminated soils from Times Beach, MO were utilized and ranged in fraction organic carbon from 0.0066-0.077. Sorption kinetics were found to be related to soil type and fraction methanol for all PCDDs studied. A negative relationship was generally observed between the contact time required to reach equilibrium for both fractions. Sorption isotherms were generally linear up to about 50% of the PCDD solubility predicted in the liquid phase being studied.

• Research Organization: Maryland Univ., College Park (USA)
• OSTI ID: 6995709
• Resource Relation: Other Information: Thesis (Ph. D.)
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
DIOXIN
LAND POLLUTION
WATER POLLUTION
METHANOL
SOILS
SORPTIVE PROPERTIES
WATER
ALCOHOLS
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXYGEN COMPOUNDS
POLLUTION
SURFACE PROPERTIES
510200* - Environment
Terrestrial- Chemicals Monitoring & Transport- (-1989)
520200 - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)