The Effect of pH, Ionic Strength and the Presence of PbII on the Formation of Calcium Carbonate from Homogenous Alkaline Solutions at Room Temperature

Di Lorenzo, Fulvio; Steiner, Kay; Churakov, Sergey V. (2021). The Effect of pH, Ionic Strength and the Presence of PbII on the Formation of Calcium Carbonate from Homogenous Alkaline Solutions at Room Temperature. Minerals, 11(7), p. 783. MDPI 10.3390/min11070783

Preview

Text minerals-11-00783-v2.pdf - Published Version Available under License Creative Commons: Attribution (CC-BY). Download (4MB) | Preview

Precipitation of calcium carbonates in aqueous systems is an important factor controlling
various industrial, biological, and geological processes. In the first part of this study, the wellknown
titration approach introduced by Gebauer and coworkers in 2008 s used to obtain reliable
experimental dataset for the deep understanding of CaCO3 nucleation kinetics in supersaturated
solutions over a broad range of pH and ionic strength conditions. In the second part, the effect of
impurities, i.e., 1 mol% of Pb2+, was assessed in the same range of experimental conditions. Divalent
lead has been shown to have an inhibitory effect in all ranges of the conditions tested except for
pH 8 and low ionic strength (≤0.15 mol/L). Future investigations might take advantage of the
methodology and the data provided in this work to investigate the effect of other system variables.
The investigation of all the major variables and the assessment of eventual synergic effects could
improve our ability to predict the formation of CaCO3 in complex natural systems.

Interest & Impact

Downloads

100 since deposited on 02 Aug 2021
19 in the past 12 months

Citations

5 Citations in Web of Science ®
6 Citations in Scopus

Search

in Google Scholar™

Services

Actions (login required)

Edit item

Actions (login required)

Edit item