Sorption models of Cadmium (11) ion onto edible fruit wastes

Abstract

Sorption models and sorption capacities of common edible fruit wastes for Cadmium (11) ion was investigated. The results of sorption studies showed that each of these common edible fruit waste sorbed more than ninety-six per cent of the Cadmium (11) ions from the aqueous solution. The results of the modelled isotherm equations namely Langmuir and Dubinin-Radushkevich showed that the maximum sorption capacity of each of these edible fruit wastes for Cadmium (11) ion Qmax l/g orange peels was great than that of the banana peels. The calculated energy value E banana peels was great than that of the orange peels. Also the calculated porosity value Q D g/l banana peels was the great than that of the orange. The calculated Langmuir constant for the two edible fruit wastes was very close to unity.

Removal of Ni (II) and Pb (II) ions from aqueous solutions by grapefruit (Citrus paradisi) Mesocarp Biomass

“…This is an indication of a multilayer biosorption existing between the metal ions and the functional groups embedded at the surface of the biom. This observation is contrary to the results of other biomass used which reported a monolayer biosorption (Ibezim -Ezeani et al, 2010;Okoro and Abii, 2011). The Freundlich and Langmuir parameters are presented in Table 4.…”