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The role of cation exchange in the sorption of cadmium, copper and lead by soils saturated with magnesium
- Source :
-
Journal of Hazardous Materials . Nov2009, Vol. 171 Issue 1-3, p262-267. 6p. - Publication Year :
- 2009
-
Abstract
- Abstract: The displacement of Ca2+, Mg2+, K+ and Al3+ from the A and Bw or Bt horizons of two soils developed over serpentinized amphibolites when equilibrated in Cu2+, Cd2+ or Pb2+ solutions was determined, together with the concomitant sorption of the heavy metal. The contributions of Mg2+ to the effective cation exchange capacities of the A and Bt horizons of the Endoleptic Luvisol were 57% and 94%, respectively, and its contributions to those of the A and Bw horizons of the Mollic Cambisol were 70% and 77%, respectively. In all four horizons, cation exchange, chiefly with Mg2+ and Ca2+, was the process chiefly responsible for sorption of Cd2+, Cu2+ and Pb2+. Al3+ and K+ were hardly implicated, especially in the case of Cd2+. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 03043894
- Volume :
- 171
- Issue :
- 1-3
- Database :
- Academic Search Index
- Journal :
- Journal of Hazardous Materials
- Publication Type :
- Academic Journal
- Accession number :
- 44418548
- Full Text :
- https://doi.org/10.1016/j.jhazmat.2009.05.137