Nickel adsorption by soils in relation to pH, organic matter, and iron oxides
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
20/05/2014
20/05/2014
01/03/2004
|
Resumo |
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 in 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 the samples without organic matter and iron oxides, adsorption decreased only in the Anionic Rhodic Acrudox. The pH was the main factor involved in nickel adsorption variation, and for soil samples without organic matter and iron oxides, the maximum adsorption occurred at higher pH values. |
Formato |
190-195 |
Identificador |
http://dx.doi.org/10.1590/S0103-90162004000200011 Scientia Agricola. Piracicaba: Univ Sao Paolo, v. 61, n. 2, p. 190-195, 2004. 0103-9016 http://hdl.handle.net/11449/3664 10.1590/S0103-90162004000200011 S0103-90162004000200011 WOS:000225443300011 WOS000225443300011.pdf |
Idioma(s) |
eng |
Publicador |
Universidade de São Paulo (USP) |
Relação |
Scientia Agricola |
Direitos |
openAccess |
Palavras-Chave | #Ni adsorption #tropical soils |
Tipo |
info:eu-repo/semantics/article |