Adsorption of metal cations from aqueous solution onto a natural and a model biocomposite

Batch adsorption studies have shown that a solid material (CACMM) extracted from a cactus was able to sorb Cu 2+, Cd 2+, Cr 3+, CrO 4 2−, Fe 3+, Ni 2+, Pb 2+ and Zn 2+ from aqueous solutions in the concentration range 100–1000 mg l −1. Fractions of CACMM with different particle diameter presented di...

Full description

Saved in:
Bibliographic Details
Published in:Colloids and surfaces. A, Physicochemical and engineering aspects Physicochemical and engineering aspects, 2003-06, Vol.219 (1), p.243-252
Main Authors: Dávila-Jiménez, M.M., Elizalde-González, Marı́a P., Geyer, W., Mattusch, J., Wennrich, R.
Format: Article
Language:English
Subjects:
Adsorption
Biocomposite
Heavy metals
Water treatment
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Batch adsorption studies have shown that a solid material (CACMM) extracted from a cactus was able to sorb Cu 2+, Cd 2+, Cr 3+, CrO 4 2−, Fe 3+, Ni 2+, Pb 2+ and Zn 2+ from aqueous solutions in the concentration range 100–1000 mg l −1. Fractions of CACMM with different particle diameter presented different sorption patterns upon the studied metal cations. Copper retention was much greater than that of other cations for all the fractions under identical experimental conditions with a maximum efficiency of 84% for 1000 mg l −1 Cu 2+ solutions. Adsorption magnitude onto large particles of CACMM1 (450 (μm) decreased in the series Cu 2+>Ni 2+>Cr 3+>Pb 2+>Zn 2+>Cd 2+>Fe 3+ that correlates with the stability constants of the respective oxalate complexes indicating that the interaction of the metal cations follows a surface adsorption–complexation mechanism. The composition of a model composite, which simulates the sorption capacity of the natural cactus powders upon copper, was found.
ISSN:0927-7757
1873-4359
DOI:10.1016/S0927-7757(03)00052-9