Adsorption of chromium (VI) ions on Brazilian smectite : effect of contact time, pH, concentration, and calorimetric investigation

Auteur(s) et Affiliation(s)

GUERRA, D.L.

Univ. Federal de Mato Grosso, DRM-UFMT, Mato Grosso, Bresil

OLIVEIRA, H.C.P.

Univ. Estadual do Norte Fluminense, UENF, Rio de Janeiro, Bresil

CORRÊA DA COSTA, P.C.

Univ. Federal de Mato Grosso, DRM-UFMT, Mato Grosso, Bresil

VIANA, R.R.

Univ. Federal de Mato Grosso, DRM-UFMT, Mato Grosso, Bresil

AIROLDI, C.

Chemistry Inst., State Univ. of Campinas, São Paulo, Bresil

Description :
The clay sample used in this investigation was obtained from the Nhamundá area, Amazonas state, North of Brazil, Amazon region. This investigation reports the use of original and modified smectite clays as alternative absorbents for extraction of toxic metal, which are commonly present in waters from a variety of sources and industrial effluents. For this purpose, the adsorption isotherms of Cr(VI) from aqueous medium at room temperature were explored, bearing in mind the influence of different parameters such as solution pH, metal concentration, and contact time.

Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 2010, vol. 82, n°. 1, p. 35-44, nombre de pages : 10, Références bibliographiques : 1 p.

Date :
2010

Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena

Langue :
Anglais