Paper Title:
Study of Biosorption of Rare Earth Metals (La, Nd, Eu, Gd) by Sargassum sp. Biomass in Batch Systems: Physicochemical Evaluation of Kinetics and Adsorption Models
  Abstract

This work evaluated kinetic and adsorption physicochemical models for the biosorption process of lanthanum, neodymium, europium, and gadolinium by Sargassum sp. in batch systems. The results showed: (a) the pseudo-second order kinetic model was the best approximation for the experimental data with the metal adsorption initial velocity parameter in 0.042-0.055 mmol.g-1.min-1 (La < Nd < Gd < Eu); (b) the Langmuir adsorption model presented adequate correlation with maximum metal uptake at 0.60-0.70 mmol g-1 (Eu < La < Gd < Nd) and the metal-biomass affinity parameter showed distinct values (Gd < Nd < Eu < La: 183.1, 192.5, 678.3, and 837.3 L g-1, respectively); and (c) preliminarily, the kinetics and adsorption evaluation did not reveal a well-defined metal selectivity behavior for the RE biosorption in Sargassum sp., but they indicate a possible partition among RE studied.

  Info
Periodical
Advanced Materials Research (Volumes 71-73)
Edited by
Edgardo R. Donati, Marisa R. Viera, Eduardo L. Tavani, María A. Giaveno, Teresa L. Lavalle, Patricia A. Chiacchiarini
Pages
605-608
DOI
10.4028/www.scientific.net/AMR.71-73.605
Citation
R.C. Oliveira, O. Garcia Jr., "Study of Biosorption of Rare Earth Metals (La, Nd, Eu, Gd) by Sargassum sp. Biomass in Batch Systems: Physicochemical Evaluation of Kinetics and Adsorption Models", Advanced Materials Research, Vols. 71-73, pp. 605-608, 2009
Online since
May 2009
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$32.00
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