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


Autoria(s): Oliveira, R. C.; Garcia, O.
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

27/05/2014

27/05/2014

28/12/2009

Resumo

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. © (2009) Trans Tech Publications.

Formato

605-608

Identificador

http://dx.doi.org/10.4028/www.scientific.net/AMR.71-73.605

Advanced Materials Research, v. 71-73, p. 605-608.

1022-6680

http://hdl.handle.net/11449/71500

10.4028/www.scientific.net/AMR.71-73.605

WOS:000273541600136

2-s2.0-72449142609

Idioma(s)

eng

Relação

Advanced Materials Research

Direitos

closedAccess

Palavras-Chave #Biosorption #Physicochemical modeling #Rare earth metals #Sargassum sp. #Adsorption model #Batch systems #Best approximations #Biosorption process #Experimental data #Initial velocities #Langmuir adsorption model #Metal adsorption #Metal selectivity #Metal uptake #Physicochemical model #Pseudo-second-order kinetic models #Sargassum sp #Adsorption #Biomass #Europium #Gadolinium #Lanthanum #Metals #Neodymium #Rare earths #Metal recovery
Tipo

info:eu-repo/semantics/conferencePaper