We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Sorption of Cd 2+ ,K + ,F- , and Cl - on some tropical soils.
- Authors
do Lago Leite, Adilson; Paraguassu R., Antenor Braga; Rowe, Kerry
- Abstract
The potential for the retention of K+, Cd 2+, F, and CL- by lateritic soils from the Botucatu (an important sandy aquifer in the southeastern part of Brazil) and Serra Geral (a clayey material) formations and three mixtures of these soils is examined. Batch equilibrium results are presented [or both single salt (CDC1[sub 2] and KF) and multiple salt (CDC1[sub 2] + KF) solutions. The soil retention parameters are obtained by fitting sorption models (linear, Freundlich, and Langmuir) to the experimental isotherm plots using linear and nonlinear regression analyses. The results show that the so called varying soil:solution ratio isotherms (VSI) are in fact less variant in terms of pH than constant soil:solution isotherms (CSI). However, because of restrictions related to the VSI approach and the "soil solution ratio effect," the CSI approach is considered to be a more reasonable way of constructing sorption isotherms. It is shown that under certain conditions, the C1[sup -] anion can be sorbed while for others it is not sorbed. Sorption was observed for F[sup -] and K[sup +]. The sorption of Cd&sup 2+; is also shown to be highly sensitive to leachate chemistry. It is shown that a knowledge of pH[sub 0] is quite important for the interpretation of sorption data.
- Subjects
SOIL solutions; SOIL moisture; INORGANIC compounds; ATMOSPHERIC temperature; ECONOMIC geology
- Publication
Canadian Geotechnical Journal, 2003, Vol 40, Issue 3, p629
- ISSN
0008-3674
- Publication type
Article
- DOI
10.1139/t03-011