Issue 17, 2013

Calcite formation by hydrothermal carbonation of portlandite: complementary insights from experiment and simulation

Abstract

The present study complements experimental results of calcite nanoparticle formation by hydrothermal carbonation of calcium hydroxide by a simulation strategy, in which both the chemical evolution of the aqueous solution and the solid phases – dissolution of portlandite and nucleation and growth of secondary calcite particles – are considered. The simulation is performed with the help of the NANOKIN code. It includes a full treatment of speciation processes in the aqueous solution, a rate equation for the dissolution of primary minerals, and a full account of nucleation and growth processes during the formation of new particles. This strategy has allowed us to decipher the various steps in the mineral transformation and solution evolution. The comparison between experiment and simulation puts strong constraints on simulation parameters, while modeling can give information on in situ conditions, currently not often available experimentally.

Graphical abstract: Calcite formation by hydrothermal carbonation of portlandite: complementary insights from experiment and simulation

Article information

Article type
Paper
Submitted
05 Dec 2012
Accepted
19 Feb 2013
First published
20 Feb 2013

CrystEngComm, 2013,15, 3392-3401

Calcite formation by hydrothermal carbonation of portlandite: complementary insights from experiment and simulation

B. Fritz, A. Clément, G. Montes-Hernandez and C. Noguera, CrystEngComm, 2013, 15, 3392 DOI: 10.1039/C3CE26969H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements