2021
DOI: 10.3390/min11040415
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Pb2+ Uptake by Magnesite: The Competition between Thermodynamic Driving Force and Reaction Kinetics

Abstract: The thermodynamic properties of carbonate minerals suggest a possibility for the use of the abundant materials (e.g., magnesite) for removing harmful divalent heavy metals (e.g., Pb2+). Despite the favourable thermodynamic condition for such transformation, batch experiments performed in this work indicate that the kinetic of the magnesite dissolution at room temperature is very slow. Another set of co-precipitation experiments from homogenous solution in the Mg-PbII-CO2-H2O system reveal that the solids forme… Show more

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Cited by 2 publications
(2 citation statements)
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“…Indeed, the measured dissolution rates of BIO-CAL and BIO-ARG in pure water are 1.33 × 10 –12 and 1.38 × 10 –12 (mol cm –2 s –1 ), respectively. In equivalent experiments, Di Lorenzo et . determined dissolution rates for 6.45 × 10 –13 (mol cm –2 s –1 ) for geological calcite and 5.15 × 10 –13 (mol cm –2 s –1 ) for geological aragonite.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…Indeed, the measured dissolution rates of BIO-CAL and BIO-ARG in pure water are 1.33 × 10 –12 and 1.38 × 10 –12 (mol cm –2 s –1 ), respectively. In equivalent experiments, Di Lorenzo et . determined dissolution rates for 6.45 × 10 –13 (mol cm –2 s –1 ) for geological calcite and 5.15 × 10 –13 (mol cm –2 s –1 ) for geological aragonite.…”
Section: Discussionmentioning
confidence: 99%
“…In equivalent experiments, Di Lorenzo et. 102 determined dissolution rates for 6.45 × 10 −13 (mol cm −2 s −1 ) for geological calcite and 5.15 × 10 −13 (mol cm −2 s −1 ) for geological aragonite. This means that BIO-CAL and BIO-ARG dissolve around 2 and 2.7 times faster than their geological counterparts, respectively.…”
Section: Biomaterials Interacting With a Pb-bearing Aqueousmentioning
confidence: 99%