|
|
| Mellis,Estêvão Vicari; Cruz,Mara Cristina Pessôa da; Casagrande,José Carlos. |
| There is little information on nickel adsorption by Brazilian soils. The objective of this experiment was to determine the effect of pH, organic matter, and iron oxides on nickel adsorption by three soils: a clayey Anionic "Rhodic" Acrudox, a sandy clay loam Anionic "Xanthic" Acrudox, and a clayey Rhodic Hapludalf. Soil samples were collected from the 0-0.2 m layer and treated to eliminate organic matter and iron oxides. The nickel adsorption was evaluated in the original samples and in those treated to remove organic matter and to remove both, organic matter and iron oxides, using 2 g soil + 20 mL of 0.01 mol L-1 CaCl2 solution containing 5 mg L-1 Ni, pH varying from 3.5 to 7.5. The nickel adsorption decreased with the elimination of organic matter. For... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ni adsorption; Tropical soils. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000200011 |
| |
