Journal
NEW JOURNAL OF CHEMISTRY
Volume 44, Issue 24, Pages 10033-10041Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9nj05983k
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- Universita del Piemonte Orientale
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Extraction of lanthanide ions with different ionic radius (La3+, Gd3+ and Lu3+) from aqueous solutions was carried out by using two synthetic saponite clays. The clays, prepared through a simple and low-cost hydrothermal approach, showed different particle size and cation-exchange capacity (CEC) and were characterized in order to evaluate the influence of their physico-chemical properties on the uptake process. Metal uptake tests, performed in pure water and simulated freshwater and seawater solutions, demonstrated that synthetic saponites have a general good sorption capacity with high lanthanide capture after a few hours of contact. The solid samples showed a higher selectivity for Lu3+, due to its small ionic radius.
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