Authors:
M. Solache-Ríos Instituto Nacional de Investigaciones Nucleares Departamento de Química Col. Escandón, Delegación Miguel Hidalgo A. P. 18-1027 C. P. 11801 México D.F.

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I. García Instituto Nacional de Investigaciones Nucleares Departamento de Química Col. Escandón, Delegación Miguel Hidalgo A. P. 18-1027 C. P. 11801 México D.F.

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V. Martínez-Miranda

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P. Bosch

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S. Bulbulian Instituto Nacional de Investigaciones Nucleares Departamento de Química Col. Escandón, Delegación Miguel Hidalgo A. P. 18-1027 C. P. 11801 México D.F.

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Abstract  

Co2+ ion exchange, at room temperature, from aqueous cobalt — sodium chloride solutions with NaY zeolite has been studied. The effect of contact time on the shape of the sorption curves of Co2+ using zeolite Y dehydrated at 600°C is similar to the one found in our previous work with a zeolite dehydrated at 150 °C. A fast sorption uptake is observed in which 1.8 meq of Na+ ions/g of zeolite are replaced by cobalt ions followed by a desorption process where the uptake decreases to 1.2 meq/g zeolite. The Co2+ sorption using zeolite Y dehydrated at 600 °C is increased when ethylenediamine solution is passed through the zeolite. The Co2+ sorption uptake, initially 2.0 meq/g, incrases to 2.8 meq/g of zeolite. This behavior is explained by the location and coordination of cobalt in zeolite Y sites. It is suggested that the highest uptake process is due to the blocking of zeolite sites by a Co complex compound.

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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)