Controlling crystallisation and dissolution of biogenic CaCO₃via dissolved magnesium cations

Abstract

The surface of our oceans is teeming with single-cellular ‘plant’ organism that biomineralise CaCO3 (coccoliths). Globally, an estimate of over 1015g of atmospheric CO2 per annum is sequestered in the...

Vaterite Dissolution: Mechanism and Kinetics

“…However, this method intrinsically focuses on specific features and is not applicable for studying the global dissolution rate of micron-sized crystals as complete entities . Recent work has employed an optical microscopy setup to study the dissolution reaction at a single-particle scale, providing a well-defined mass transport regime and enabling a detailed study of reaction kinetics. − In the case of vaterite, the interest in particle dissolution is potentially driven by its application in drug delivery, particularly focusing on the associated release kinetics of encapsulated substances. Classical methods for studying release kinetics often concentrate on macroscopic volumes and provide no continuous output .…”