Heavy metals adsorption in luvisols and cambisols of Paraíba State
Titel:
Heavy metals adsorption in luvisols and cambisols of Paraíba State
Auteur:
Lucia Helena Garófalo Chaves Ramara Sena de Souza Iêde de Brito Chaves Gilvanise Alves Tito
Verschenen in:
Engenharia ambiental
Paginering:
Jaargang 6 (2009) nr. 2 pagina's 150-162
Jaar:
2009
Inhoud:
The adsorption of heavy metal can be evaluated by mathematical model described by Langmuir equation. The objective of this study was to evaluate copper and cadmium adsorption in surface samples of Luvisols and Cambisols from Paraíba State, Brazil. In order to quantify these adsorbed elements, 2 g of air-dried soil were equilibrated with 20 mL of solution containing different concentration of Cu (5, 10, 20, 40, 60, 80 mg L-1) and of Cd (20, 30, 50, 100, 150 e 200 mg L-1). The study showed that Langmuir model offered a good fit for Cu and Cd; the soil properties evaluated not correlated with parameters of adsorption of copper and cadmium; Luvisols e Cambisol adsorbs more cadmium and copper, respectively. In both soil cadmium is more easily lost.Key-words: copper, cadmium, mathematical model, environmental impact.
Uitgever:
Environmental Engineering Course / UNIPINHAL (provided by DOAJ)