Influence of exchangeable cation on the sorption of trace amounts of cadmium by montmorillonite

Journal Article · Sat Jan 01 04:00:00 EST 1977 · Soil Sci. Soc. Am. J.; (United States)

DOI:https://doi.org/10.2136/sssaj1977.03615995004100040020x· OSTI ID:5147100

Garcia-Miragaya, J; Page, A L

The effect of different exchangeable cations on the sorption of trace amounts of Cd by montmorillonite (clay fraction, Upton, Wyoming) was studied by equilibrating samples of homoionic clay suspensions with CdCl/sub 2/ solutions ranging from 15 to 120 ..mu..g Cd/liter. These Cd concentrations are similar to those found in natural and contaminated soil-water systems. The amount of Cd sorbed on the montmorillonite surfaces depended on the kind of exchangeable cation, decreasing in the order Na-montmorillonite greater than K-montmorillonite greater than Ca-montmorillonite greater than Al-montmorillonite, Exchangeable Al was found to be particularly effective in reducing Cd sorption by high energy sites on montmorillonite.

• Research Organization: Univ. of California, Riverside
• OSTI ID: 5147100
• Journal Information: Soil Sci. Soc. Am. J.; (United States), Journal Name: Soil Sci. Soc. Am. J.; (United States) Vol. 41:4; ISSN SSSJD
• Country of Publication: United States
• Language: English

Related Subjects

510200* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ALKALI METALS
ALKALINE EARTH METALS
ALUMINIUM
CADMIUM
CADMIUM CHLORIDES
CADMIUM COMPOUNDS
CADMIUM HALIDES
CALCIUM
CATIONS
CHARGED PARTICLES
CHLORIDES
CHLORINE COMPOUNDS
CLAYS
ECOLOGICAL CONCENTRATION
ELEMENTS
HALIDES
HALOGEN COMPOUNDS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
IONS
METALS
MINERALS
MONTMORILLONITE
NORTH AMERICA
POTASSIUM
SODIUM
SORPTION
TRACE AMOUNTS
USA
WYOMING