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Title: Adsorção e dessorção aniônicas individuais por gibbsita pedogenética
Other Titles: Individual anionic adsorption and desorption by pedogenic gibbsite
???metadata.dc.creator???: Pozza, Adélia Aziz Alexandre
Curi, Nilton
Guilherme, Luiz R. G.
Marques, João José Granate de Sá e Melo
Costa, Enio T. S.
Zuliani, Daniela Q.
Motta, Paulo E.F.
Martins, Rodrigo S.
Oliveira, Luiz C. A.
Keywords: Retenção
Hidróxido de aluminio
Publisher: Sociedade Brasileira de Química
Issue Date: 18-Dec-2008
Citation: POZZA, A. A. A. et al. Adsorção e dessorção aniônicas individuais por gibbsita pedogenética. Química Nova, São Paulo, v. 32, n.1, p.99-105, 2009.
Abstract: Anion adsorption/desorption dynamics was studied as individual processes on surface of particles of a gibbsitic clay. The data suggest a remarkable gibbsite role as nitrate leaching retardant in soil. The opposite behavior of gibbsite towards adsorption/desorption of silicate and phosphate suggests the need of an adequate compromise solution regarding interval and rate applications of anions in cultivated gibbsitic soils. The high P adsorption verified in pH values lower than that reported for the point of zero charge of synthetic Al-hydroxides implies that this process takes place in pedogenic gibbsites through inner sphere complexation.
URI: http://repositorio.ufla.br/jspui/handle/1/3642
???metadata.dc.language???: pt_BR
Appears in Collections:DCS - Artigos publicados em periódicos

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