Utilizacao de modelos fisico-quimicos de adsorcao no estudo do comportamento do cobre em solos argilosos



Document title: Utilizacao de modelos fisico-quimicos de adsorcao no estudo do comportamento do cobre em solos argilosos
Journal: Quimica nova
Database: PERIÓDICA
System number: 000196205
ISSN: 0100-4042
Authors: 1

Institutions: 1Universidade Estadual de Maringa, Departamento de Quimica, Maringa, Parana. Brasil
2Universidade Estadual de Maringa, Departamento de Agronomia, Maringa, Parana. Brasil
Year:
Season: May-Jun
Volumen: 24
Number: 3
Pages: 324-330
Country: Brasil
Language: Portugués
Document type: Artículo
Approach: Experimental, descriptivo
English abstract It was evaluated the applicability of Langmuir, Freundlich and Temkin models to copper adsorption in three classes of soils. Fractions of each soil were added to test tubes containing growing concentrations of the metal in solution. The tubes were shaken and the copper concentrations were determined in the extracts by atomic absorption spectrometry (AAS). The models offered a good fit for the experimental data indicating that presence of silicated clay had high influence on copper sorption. The Langmuir isotherm showed high influence of the organic matter in the absorption phenomenon. It was evidenced the importance of further studies related to Temkin model
Disciplines: Química,
Geociencias
Keyword: Química analítica,
Mineralogía,
Modelos,
Cobre,
Modelo de Langmuir,
Modelo Freundlich,
Modelo de Temkin,
Modelos de adsorción,
Espectrometría de absorción atómica,
Suelos arcillosos
Keyword: Chemistry,
Earth sciences,
Analytical chemistry,
Models,
Copper,
Langmuir's model,
Freundlich's model,
Temkin's model,
Adsorption models,
Atomic absorption spectrometry,
Clay soils
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