UO22+ SORPTION ON BENTONITE

Authors
OLGUIN MT SOLACHERIOS M ACOSTA D BOSCH P BULBULIAN S
Citation
Mt. Olguin et al., UO22+ SORPTION ON BENTONITE, Journal of radioanalytical and nuclear chemistry, 218(1), 1997, pp. 65-69
Citations number
6
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Analytical","Nuclear Sciences & Tecnology
Journal title
Journal of radioanalytical and nuclear chemistry → ACNP
ISSN journal
02365731
Volume
218
Issue
1
Year of publication
1997
Pages
65 - 69
Database
ISI
SICI code
0236-5731(1997)218:1<65:USOB>2.0.ZU;2-C
Abstract
The capacity of bentonite and purified bentonite to remove UO22+ ions from aqueous solutions has been investigated, The UO22+ uptake in thes e clays was determined for 0.2 and 0.002M uranyl nitrate solutions. It was found that under these conditions (0.2M) the maximum UO22+ uptake was 1.010+/-+/-0.070 meq UO22+/g of bentonite and 0.787+/-0.020 meg U O22+/g of purified bentonite. In purified bentonite UO22+ sorption is irreversible up to 50 hours as no desorption was observed. Such is not the case in the natural bentonite. X-ray diffraction, thermal analyse s, and transmission electron microscopy were used to characterize the solids. The uranium content was determined by neutron activation analy sis.