Ce3+ adsorption on hydrated MnO2

J. Serrano; O. Garcia

doi:10.1007/bf02387443

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 230: Issue 1-2

Ce³⁺ adsorption on hydrated MnO₂

Authors:

J. Serrano

J. Serrano Instituto Nacional de Investigaciones Nucleares, Gerencia de Ciencias Básicas Col. Escandón, Deleg.Miguel Hidalgo P. O. 18-1027 11801 México D. F. México

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O. Garcia

O. Garcia Instituto Nacional de Investigaciones Nucleares, Gerencia de Ciencias Básicas Col. Escandón, Deleg.Miguel Hidalgo P. O. 18-1027 11801 México D. F. México

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Pages:: 33–37

Online Publication Date:: 12 Apr 2006

Publication Date:: 17 Apr 1998

Article Category:: Research Article

DOI:: https://doi.org/10.1007/bf02387443

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Abstract

The adsorption of Ce³⁺ on hydrated manganese dioxide (HMD) was studied as a function of concentration, temperature and pH of the cerium solution labelled with¹⁴¹Ce. The steady state values of cerium adsorption at various concentrations fit well with the classical Freundlich isotherm. The effect of temperature on equilibrium adsorption values was utilized to determine the change in the standard enthalpy ΔH^o of the cerium uptake process and its value (ΔH^o=10.57) indicates that the uptake process proceeds via ion exchange.¹⁴¹Ce desorption studies, from HMD in water, HCl and unlabelled CeCl₃ solution, confirmed the ion exchange nature of the cerium uptake process as well as its reversibility.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)