-The atomic radius of lanthanum is approximately 0.35 nm, as opposed to 0.3 nm for water molecules.
-Seawater sample also contain organic contaminants such as Mg, Na, etc. some of them with the same molecular size as lanthanum.
Adsorption can be a choice for this purpose to react with specific type of elements
Thanks dear Saeedeh, but during adsorption, other metals dissolved in solution due to hydrolysis can also interact with functional groups on adsorbents, and separating them after adsorption can be problematic.
Adsorption
Other metals such as Fe, Scandium, etc. can also be absorbed by membranes, however in this instance I plan on recovering only La. Fatima Boukhlifi
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