Carbonate Minerals’ Precipitation in the Presence of Background Electrolytes: Sr, Cs, and Li with Different Transporting Anions
Metadatos
Mostrar el registro completo del ítemEditorial
MDPI
Materia
Carbonates precipitation Ionic strength Crystallinity Chemical composition Electrolyte solution
Fecha
2023-05-10Referencia bibliográfica
Marin-Troya, P.; Espinosa, C.; Monasterio-Guillot, L.; Alvarez-Lloret, P. CarbonateMinerals’ Precipitation in the Presence of Background Electrolytes: Sr, Cs, and Li with Different Transporting Anions. Crystals 2023, 13, 796. [https:// doi.org/10.3390/cryst13050796]
Patrocinador
Spanish Ministry of Economy and Competitiveness, grant number PCI2019-111931-2; European Regional Development Fund (ERDF)—Next Generation/EU programResumen
Carbonate minerals are largely associated with many geological and biological environments
as well as several industrial and technological processes. The crystalline characteristics of these
mineral phases can be modified by background salts present in the solution due to the effect of different
electrolytes on the dynamics of ion-water interactions and ionic strength during precipitation. In
the current research, we studied the effect of the presence of several electrolytes (i.e., Cs, Li, and Sr),
combined with chloride and carbonate as transporting anions, on the growth and mineral evolution
processes of carbonate precipitation in solution. The electrolyte composition during the reaction
(experimental times from 24 h up to 30 days) determined the formation of specific calcium carbonate
polymorphs. The Li presence induced the formation of vaterite which was progressively transformed
into calcite during the reaction time, while Cs stabilized the calcite formation. The Sr presence in
the system caused the precipitation of strontianite with modifications in its cell parameters and the
structural arrangement of the carbonate molecular group. During the mineral evolution considering
chloride and carbonate experimental set-ups, several compositional and cell parameters/crystallinity
variations of the carbonated phases were also observed. A better understanding of the relationship
between the compositional properties of the aqueous solvent and the crystallization mechanisms can
contribute to a deeper comprehension of the mineral precipitation and transformation in different
multicomponent solutions that occur in natural environments and in controlled synthesis processes