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Adsorption and desorption of arsenic and its immobilization in soils Scientia Agricola
Almeida,Cecília Calhau; Fontes,Maurício Paulo Ferreira; Dias,Adriana Cristina; Pereira,Thiago Torres Costa; Ker,João Carlos.
ABSTRACT: Arsenic (As) is a naturally occurring chemical element considered toxic and carcinogenic by health and environmental protection agencies. Studies of As adsorption/desorption behavior in soils are important to predictions of As’ potential mobility in natural systems. The aim of this study was to assess the adsorption of As(V) in soils from Minas Gerais, Brazil, and determine its immobilization rate in order to identify soils with characteristics more favorable to its deployment as an As geochemical barrier. The adsorption experiment was performed using different As concentrations and the data pertaining to the maximum adsorption capacity of As(V) (MACAs) were determined by Langmuir and Freundlich isoterms. The Oxisols, due to their more oxidic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Toxic contaminant; Maximum adsorption capacity; Mineralogy of soils; Texture; Geochemical barrier.
Ano: 2021 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000301401
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