https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:23788 Sat 24 Mar 2018 07:16:26 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:22079 Sat 24 Mar 2018 07:15:16 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47580 2) enables its subsequent reaction to form magnesium carbonate, a process called aqueous mineral carbonation. The dissolution rate of magnesium ions (Mg²⁺) from thermally activated serpentine and the factors influencing the rate and extent of dissolution have been studied in our research group. The current contribution focuses on the effect of temperature and pH on the dissolution of heat activated lizardite (a polymorph of serpentine). The extent of dissolution of thermally activated lizardite was measured experimentally as a function of temperature (25 °C≤T≤75 °C) and pH (1.2 ≤ pH≤9.8). It was found that at higher temperatures the level of Mg extraction is greater during the initial stage of dissolution but is then hindered by the re-precipitation of amorphous silica. Thermodynamic modelling was used to assess the susceptibility of solid phase formation and confirmed the likelihood of re-precipitation of amorphous silica from the solutions. For the first time, in this work, the crackling core model (CCM) was used to model experimental data at different pH values.]]> Mon 23 Jan 2023 14:14:29 AEDT ]]>