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RESEARCH PRODUCT

Effects of Dissolved Complexation on REE Fate During Interactions between Volcanic Ash and Coexisting Fluids

Loredana RandazzoPierpaolo ZuddasFilippo SaianoPaolo Censi

subject

Volcanic ash dissolutionEffect of dissolved complexesBatch methodGeochemistryEarth and Planetary Sciences(all)SorptionGeneral MedicineSurface complexationchemistry.chemical_compoundchemistryEnvironmental chemistryRare earth elements leachingCarbonateKinetic experimentsLeaching (metallurgy)DissolutionGeologygeochemistryVolcanic ash

description

AbstractThis work analyzes REE behavior during the delivery of volcanic ash into a marine system and highlights the effects induced by dissolved carbonate and humate complexes on REE release. Kinetic experiments were carried out during a 6-month period using a batch method approach. Results show that the highest degree of REE leaching occurs during the early stage. Altered phases that crystallize induce REE sorption and dissolved complexation towards surface complexation, concurrent processes that are enhanced by Y/Ho, La/Yb, and Ce/Ce* changes, whereas dissolved humates and carbonates influence the dissolution rate of ash and the dissolved REE behavior.

yearjournalcountryeditionlanguage
2013-01-01Procedia Earth and Planetary Science
10.1016/j.proeps.2013.02.001http://dx.doi.org/10.1016/j.proeps.2013.02.001