Factors affecting interaction of radiocobalt with river sediments: I. pH and composition of water, and contact time

P. Beneš; M. Jurák; M. Kuncová

doi:10.1007/bf02136081

Jump to Content

Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 132: Issue 2

Factors affecting interaction of radiocobalt with river sediments

I. pH and composition of water, and contact time

Authors:

P. Beneš

P. Beneš Technical University of Prague Department of Nuclear Chemistry Břehová 7 115 19 Prague Czechoslovakia

Search for other papers by P. Beneš in
Current site
Google Scholar
PubMed

M. Jurák

M. Jurák Technical University of Prague Department of Nuclear Chemistry Břehová 7 115 19 Prague Czechoslovakia

Search for other papers by M. Jurák in
Current site
Google Scholar
PubMed

, and

M. Kuncová

M. Kuncová Technical University of Prague Department of Nuclear Chemistry Břehová 7 115 19 Prague Czechoslovakia

Search for other papers by M. Kuncová in
Current site
Google Scholar
PubMed

View More View Less

Pages:: 209–223

Online Publication Date:: 16 Sep 2005

Publication Date:: 17 Aug 1989

Article Category:: Research Article

DOI:: https://doi.org/10.1007/bf02136081

Restricted access

Abstract

The paper aims at the analysis of principal factors affecting interaction of radiocobalt with freshwater solids, important for migration of radiocobalt in surface streams. Uptake and release of radiocobalt by sediment from a small river have been studied as a function of pH and composition of aqueous phase, the cobalt concentration and contact time, using laboratory model experiments. A factor of primary importance is the contact time due to slow and two-step kinetics of radiocobalt uptake, which also strongly depends on the concentration of sediment in suspension. pH exerts the most significant effect on the interaction in the pH region of 5–7.5, where the uptake increases with pH. Ionic strength of water phase (I) and concentration of cobalt in water (c) affect the interaction only at rather high values of I or c and their variation can be neglected in the modelling of radiocobalt transport in streams under ordinary conditions. Desorption by river water of radiocobalt pre-adsorbed on the sediment passes through a maximum with desorption time, decreases with increasing adsorption time and increases upon drying of the sediment prior to desorption. Results obtained are compared with literature data and conclusions are drawn concerning the mechanism of radiocobalt uptake by the sediment.

Save
Cite
Email this content

Share Link

Copy this link, or click below to email it to a friend
Email this content
or copy the link directly:

https://akjournals.com/abstract/journals/10967/132/2/article-p209.xml
The link was not copied. Your current browser may not support copying via this button.

Link copied successfully

Collapse
Expand

Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

To see the editorial board, please visit the website of Springer Nature.

Manuscript Submission: HERE

For subscription options, please visit the website of Springer Nature.

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)