Adsorption and desorption kinetics of 60Co and 137Cs in fresh water rivers

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Adsorption and desorption kinetics of 60Co and 137Cs in fresh water rivers. / Fiengo Perez, Fabricio; Sweeck, Lieve; Van Hees, May; Elskens, Marc; Bauwens, Willy.

In: Journal of environmental radioactivity, Vol. 149, 25.07.2015, p. 81-89.

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Fiengo Perez, Fabricio ; Sweeck, Lieve ; Van Hees, May ; Elskens, Marc ; Bauwens, Willy. / Adsorption and desorption kinetics of 60Co and 137Cs in fresh water rivers. In: Journal of environmental radioactivity. 2015 ; Vol. 149. pp. 81-89.

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@article{0e8ca79000874bcca651aac476101372,
title = "Adsorption and desorption kinetics of 60Co and 137Cs in fresh water rivers",
abstract = "Radionuclides released in water systems – as well as heavy metals and organic toxicants – sorb to both the suspended solid particles and the bed sediments. Sorption is usually represented mathematically by the distribution coefficient. This approach implies equilibrium between phases and instantaneous fixation (release) of the pollutant onto (from) the surface of the soil particle. However, empirical evidence suggests that for some radionuclides the fixation is not achieved instantaneously and that the reversibility of the process can be slow. Here the adsorption/desorption kinetics of 60Co and 137Cs in fresh water environments were simulated experimentally and later on modelled mathematically, while the influence of the most relevant factors affecting the sorption were taken into account. The experimental results suggest that for adsorption and the desorption more than 24 h are needed to reach equilibrium, moreover, It was observed that the desorption rate constants for 60Co and 137Cs lie within ranges which are of two to three orders of magnitude lower than the adsorption rate constants.",
keywords = "Radionuclides, Distribution coefficient, Adsorption, Desorption, Kinetics, Uncertainty analysis",
author = "{Fiengo Perez}, Fabricio and Lieve Sweeck and {Van Hees}, May and Marc Elskens and Willy Bauwens",
note = "Score=10",
year = "2015",
month = "7",
day = "25",
doi = "10.1016/j.jenvrad.2015.07.010",
language = "English",
volume = "149",
pages = "81--89",
journal = "Journal of environmental radioactivity",
issn = "0265-931X",
publisher = "Elsevier",

}

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TY - JOUR

T1 - Adsorption and desorption kinetics of 60Co and 137Cs in fresh water rivers

AU - Fiengo Perez, Fabricio

AU - Sweeck, Lieve

AU - Van Hees, May

AU - Elskens, Marc

AU - Bauwens, Willy

N1 - Score=10

PY - 2015/7/25

Y1 - 2015/7/25

N2 - Radionuclides released in water systems – as well as heavy metals and organic toxicants – sorb to both the suspended solid particles and the bed sediments. Sorption is usually represented mathematically by the distribution coefficient. This approach implies equilibrium between phases and instantaneous fixation (release) of the pollutant onto (from) the surface of the soil particle. However, empirical evidence suggests that for some radionuclides the fixation is not achieved instantaneously and that the reversibility of the process can be slow. Here the adsorption/desorption kinetics of 60Co and 137Cs in fresh water environments were simulated experimentally and later on modelled mathematically, while the influence of the most relevant factors affecting the sorption were taken into account. The experimental results suggest that for adsorption and the desorption more than 24 h are needed to reach equilibrium, moreover, It was observed that the desorption rate constants for 60Co and 137Cs lie within ranges which are of two to three orders of magnitude lower than the adsorption rate constants.

AB - Radionuclides released in water systems – as well as heavy metals and organic toxicants – sorb to both the suspended solid particles and the bed sediments. Sorption is usually represented mathematically by the distribution coefficient. This approach implies equilibrium between phases and instantaneous fixation (release) of the pollutant onto (from) the surface of the soil particle. However, empirical evidence suggests that for some radionuclides the fixation is not achieved instantaneously and that the reversibility of the process can be slow. Here the adsorption/desorption kinetics of 60Co and 137Cs in fresh water environments were simulated experimentally and later on modelled mathematically, while the influence of the most relevant factors affecting the sorption were taken into account. The experimental results suggest that for adsorption and the desorption more than 24 h are needed to reach equilibrium, moreover, It was observed that the desorption rate constants for 60Co and 137Cs lie within ranges which are of two to three orders of magnitude lower than the adsorption rate constants.

KW - Radionuclides

KW - Distribution coefficient

KW - Adsorption

KW - Desorption

KW - Kinetics

KW - Uncertainty analysis

UR - http://ecm.sckcen.be/OTCS/llisapi.dll?func=ll&objId=20223680&objaction=overview&tab=1

U2 - 10.1016/j.jenvrad.2015.07.010

DO - 10.1016/j.jenvrad.2015.07.010

M3 - Article

VL - 149

SP - 81

EP - 89

JO - Journal of environmental radioactivity

JF - Journal of environmental radioactivity

SN - 0265-931X

ER -

ID: 729027