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Minerals
Special Issues
Mineral Dissolution and Growth Kinetics
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Mineral Dissolution and Growth Kinetics

A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Crystallography and Physical Chemistry of Minerals & Nanominerals".

Deadline for manuscript submissions: closed (10 December 2021) | Viewed by 8629

Special Issue Editors

Prof. Dr. Jeffrey W. Bullard

E-Mail Website1 Website2
Guest Editor
Zachry Department of Civil and Environmental Engineering, Department of Materials Science and Engineering, Texas A&M University, College Station, TX 77843-3136, USA
Interests: cement chemistry; mineral dissolution and growth kinetics; computational modeling of microstructure; sintering and grain growth; granular media shape analysis
Prof. Dr. Denis Gebauer

E-Mail Website
Co-Guest Editor
Institut für Anorganische Chemie, Leibniz Universität Hannover, Callinstr. 9, 30167 Hannover, Germany
Interests: physical chemistry; materials chemistry; crystallization; nucleation; non-classical crystallization; polyamorphism; pre-nucleation clusters; biomineralization; additive-controlled crystallization; bio-inspired materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Mineral reactions with aqueous solutions are central to an extraordinary range of natural and engineered phenomena.  An incomplete list of important processes dominated by mineral dissolution and growth includes the weathering of rocks and glasses, morphogenesis of sedimentary deposits, leaching, corrosion, hydrometallurgy, biomineralization, cement hydration, and the synthesis of inorganic powders.

Understanding the fundamental mechanisms that govern these processes is an ongoing challenge. The task is complicated by several factors, such as the difficulty of correlating lab-based and field-based observations, the sensitive dependence of the kinetics on mineral surface structure and near-surface chemistry, and the challenge of characterizing dynamic processes such as heterogeneous nucleation and altered surface layer formation in aqueous media. Nevertheless, the last twenty years have witnessed a number of breakthrough characterization methods, theoretical models, and computational simulation methods that have enabled a clearer picture of the phenomena that emerge. This Special Issue provides a unique collection of some of the most recent advances and applications in experimental and theoretical research on mineral dissolution and growth kinetics, from the molecular to the macroscopic scale.

Prof. Dr. Jeffrey W. Bullard
Prof. Dr. Denis Gebauer
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Minerals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • dissolution
  • precipitation
  • nucleation
  • kinetics
  • thermodynamics

Published Papers (4 papers)

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Research

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12 pages, 4916 KiB  
Article
On the Role of Poly-Glutamic Acid in the Early Stages of Iron(III) (Oxy)(hydr)oxide Formation
by Miodrag J. Lukić, Felix Lücke, Teodora Ilić, Katharina Petrović and Denis Gebauer
Minerals 2021, 11(7), 715; https://0-doi-org.brum.beds.ac.uk/10.3390/min11070715 - 01 Jul 2021
Cited by 2 | Viewed by 2185
Abstract
Nucleation of minerals in the presence of additives is critical for achieving control over the formation of solids in biomineralization processes or during syntheses of advanced hybrid materials. Herein, we investigated the early stages of Fe(III) (oxy)(hydr)oxide formation with/without polyglutamic acid (pGlu) at [...] Read more.
Nucleation of minerals in the presence of additives is critical for achieving control over the formation of solids in biomineralization processes or during syntheses of advanced hybrid materials. Herein, we investigated the early stages of Fe(III) (oxy)(hydr)oxide formation with/without polyglutamic acid (pGlu) at low driving force for phase separation (pH 2.0 to 3.0). We employed an advanced pH-constant titration assay, X-ray diffraction, thermal analysis with mass spectrometry, Fourier Transform infrared spectroscopy, and scanning electron microscopy. Three stages were observed: initial binding, stabilization of Fe(III) pre-nucleation clusters (PNCs), and phase separation, yielding Fe(III) (oxy)(hydr)oxide. The data suggest that organic–inorganic interactions occurred via binding of olation Fe(III) PNC species. Fourier Transform Infrared Spectroscopy (FTIR) analyses revealed a plausible interaction motif and a conformational adaptation of the polypeptide. The stabilization of the aqueous Fe(III) system against nucleation by pGlu contrasts with the previously reported influence of poly-aspartic acid (pAsp). While this is difficult to explain based on classical nucleation theory, alternative notions such as the so-called PNC pathway provide a possible rationale. Developing a nucleation theory that successfully explains and predicts distinct influences for chemically similar additives like pAsp and pGlu is the Holy Grail toward advancing the knowledge of nucleation, early growth, and structure formation. Full article
(This article belongs to the Special Issue Mineral Dissolution and Growth Kinetics)
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13 pages, 3923 KiB  
Article
Influence of Muscovite (001) Surface Nanotopography on Radionuclide Adsorption Studied by Kinetic Monte Carlo Simulations
by Jonas Schabernack, Inna Kurganskaya, Cornelius Fischer and Andreas Luttge
Minerals 2021, 11(5), 468; https://0-doi-org.brum.beds.ac.uk/10.3390/min11050468 - 29 Apr 2021
Cited by 5 | Viewed by 1620
Abstract
Mechanistic understanding and prediction of solute adsorption from fluids onto mineral surfaces is relevant for many natural and technical processes. Mineral surfaces in natural systems are often exposed to fluids at non-equilibrium conditions resulting in surface dissolution reactions. Such reactions cause the formation [...] Read more.
Mechanistic understanding and prediction of solute adsorption from fluids onto mineral surfaces is relevant for many natural and technical processes. Mineral surfaces in natural systems are often exposed to fluids at non-equilibrium conditions resulting in surface dissolution reactions. Such reactions cause the formation of surface nanotopography and, consequently, the exposure of different types of surface atoms. The quantitative effect of nanotopography on the efficiency of adsorption reactions at crystal surfaces is not known. Using kinetic Monte Carlo simulations, we combined a model of muscovite (001) face dissolution with a consequent model of radionuclide adsorption on the rough mineral surface. The model considers three different adsorption sites based on the muscovite surface cations: silicon, tetrahedral, and octahedral aluminum. Two different nanotopography configurations are investigated, both showing similar adsorption behavior. Octahedral aluminum surface atoms defined by having the highest reactivity toward adsorption are exposed solely on steps and pits on the muscovite (001) face. Thus, their availability directly depends on the surface nanotopography. The model results show the need for a more precise parameterization of surface site-specific adsorption, taking into account the coordination of the involved surface cation such as kink, step, or terrace sites. Full article
(This article belongs to the Special Issue Mineral Dissolution and Growth Kinetics)
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11 pages, 14390 KiB  
Article
Topographic Analysis of Calcite (104) Cleavage Surface Dissolution in Ethanol–Water Solutions
by Shaoxiong Ye, Pan Feng and Jiaping Liu
Minerals 2021, 11(4), 376; https://0-doi-org.brum.beds.ac.uk/10.3390/min11040376 - 02 Apr 2021
Cited by 1 | Viewed by 1754
Abstract
The interaction of organic molecules with calcite surfaces plays a key role in many geochemical, industrial and biomineralization processes, and exploring the influences of organic molecules on calcite reactions is crucial for a fundamental understanding of the reaction mechanisms. Here, we used digital [...] Read more.
The interaction of organic molecules with calcite surfaces plays a key role in many geochemical, industrial and biomineralization processes, and exploring the influences of organic molecules on calcite reactions is crucial for a fundamental understanding of the reaction mechanisms. Here, we used digital hologram microscopy to explore the in situ evolution of the calcite (104) surfaces when dissolved in ethanol–water solutions, and total organic carbon analysis was applied to confirm the adsorption of ethanol by calcite. The results showed that the bulk dissolution rate of calcite decreases as the volume fraction of ethanol increases, and the topographic features of etch pits were also altered by the presence of ethanol. When exposed to too much ethanol, the etch pits’ growth was inhibited and their shapes tended to change from rhombuses in ultrapure water to triangles. Our results provide insights into the interaction between adsorbed ethanol and evolving calcite crystal, which highlights the dissolution regulation of calcite by organic molecules that could benefit a broad range of fields. Full article
(This article belongs to the Special Issue Mineral Dissolution and Growth Kinetics)
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Review

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29 pages, 16859 KiB  
Review
The Surface-Vacancy Model—A General Theory of the Dissolution of Minerals and Salts
by Frank K. Crundwell
Minerals 2021, 11(5), 521; https://0-doi-org.brum.beds.ac.uk/10.3390/min11050521 - 14 May 2021
Viewed by 2177
Abstract
The kinetics of the dissolution of salts and minerals remains a field of active research because these reactions are important to many fields, such as geochemistry, extractive metallurgy, corrosion, biomaterials, dentistry, and dietary uptake. A novel model, referred to as the surface-vacancy model, [...] Read more.
The kinetics of the dissolution of salts and minerals remains a field of active research because these reactions are important to many fields, such as geochemistry, extractive metallurgy, corrosion, biomaterials, dentistry, and dietary uptake. A novel model, referred to as the surface-vacancy model, has been proposed by the author as a general mechanism for the primary events in dissolution. This paper expands on the underlying physical model while serving as an update on current progress with the application of the model. This underlying physical model envisages that cations and anions depart separately from the surface leaving a surface vacancy of charge opposite to that of the departing ion on the surface. This results in an excess surface charge, which in turn affects the rate of departing ions. Thus, a feedback mechanism is established in which the departing of ions creates excess surface charge, and this net surface charge, in turn, affects the rate of departure. This model accounts for the orders of reaction, the equilibrium conditions, the acceleration or deceleration of rate in the initial phase and the surface charge. The surface-vacancy model can also account for the effect of impurities in the solution, while it predicts phenomena, such as ‘partial equilibrium’, that are not contemplated by other models. The underlying physical model can be independently verified, for example, by measurements of the surface charge. This underlying physical model has implications for fields beyond dissolution studies. Full article
(This article belongs to the Special Issue Mineral Dissolution and Growth Kinetics)
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