Arsenite sorption and desorption in soils

Conference · · Soil Sci. Soc. Am. J.; (United States)

OSTI ID:6294087

Elkhatib, E A; Bennett, O L; Wright, R J

A linear form of the Freundlich isotherm was used to describe arsenite (As(III)) sorption by the A and B horizons of five West Virginia soils. Arsenite sorption conformed to the Freundlich isotherm over the entire concentration range for all the soils. Simple correlation coefficients and multiple regression equations were used to relate soil properties to parameters of the Freundlich equation. Iron oxide percentage and pH were the soil properties most closely related to parameters of As(III) sorption. The rate of As(III) sorption by the A and B horizons of an Upshur soil was rapid initially and decreased with time. A modified form of the Freundlich equation was used to explain the As(III) sorption rate data. Arsenite sorption was not reversible. The modified Freundlich equation was also to describe As(III) desorption rate. Simple and multiple regression calculation indicated that iron oxides and pH were correlated with the rate of As(III) desorption by the investigated soils.

• Research Organization: Dept. of Agriculture, Beckley, WV
• OSTI ID: 6294087
• Journal Information: Soil Sci. Soc. Am. J.; (United States), Journal Name: Soil Sci. Soc. Am. J.; (United States) Vol. 48:5; ISSN SSSJD
• Country of Publication: United States
• Language: English

Related Subjects

510200* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ARSENIC
CHALCOGENIDES
CHEMISTRY
CORRELATIONS
DESORPTION
ELEMENTS
IRON COMPOUNDS
IRON OXIDES
MATHEMATICAL MODELS
OXIDES
OXYGEN COMPOUNDS
PH VALUE
SEMIMETALS
SOIL CHEMISTRY
SOILS
SORPTION
TRANSITION ELEMENT COMPOUNDS