1
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Xu W, Cheng H, Li E, Pan Z, Cheng F. Formation of CaCO3 hollow microspheres in carbonated distiller waste from Solvay soda ash plants. Front Chem Sci Eng 2022. [DOI: 10.1007/s11705-022-2173-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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2
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Fang Y, Zhang F, Farfan GA, Xu H. Low-Temperature Synthesis of Disordered Dolomite and High-Magnesium Calcite in Ethanol-Water Solutions: The Solvation Effect and Implications. ACS OMEGA 2022; 7:281-292. [PMID: 35036699 PMCID: PMC8757334 DOI: 10.1021/acsomega.1c04624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 12/03/2021] [Indexed: 06/14/2023]
Abstract
How dolomite [CaMg(CO3)2] forms is still underdetermined, despite over a century of efforts. Challenges to synthesizing dolomite at low temperatures have hindered our understanding of sedimentary dolomite formation. Unlike calcium, magnesium's high affinity toward water results in kinetic barriers from hydration shells that prevent anhydrous Ca-Mg carbonate growth. Previous synthesis studies show that adding low-dielectric-constant materials, such as dioxane, dissolved sulfide, and dissolved silica, can catalyze the formation of disordered dolomite. Also, polar hydrophilic amino acids and polysaccharides, which are very common in biomineralizing organisms, could have a positive role in stimulating Mg-rich carbonate precipitation. Here, we show that disordered dolomite and high-magnesium calcite can be precipitated at room temperature by partially replacing water with ethanol (which has a lower dielectric constant) and bypassing the hydration barrier. Increasing the ethanol volume percentage of ethanol results in higher Mg incorporation into the calcite structure. When the ethanol volume percentage increases to 75 vol %, disordered dolomite (>60 mol % MgCO3) can rapidly precipitate from a solution with [Mg2+] and [Ca2+] mimicking seawater. Thus, our results suggest that the hydration barrier is the critical kinetic inhibitor to primary dolomite precipitation. Ethanol synthesis experiments may provide insights into other materials that share similar properties to promote high-Mg calcite precipitation in sedimentary and biomineral environments.
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Affiliation(s)
- Yihang Fang
- NASA
Astrobiology Institute, Department of Geoscience, University of Wisconsin−Madison, 1215 W Dayton Street, Madison, Wisconsin 53706, United States
- Department
of Mineral Sciences, National Museum of Natural History, Smithsonian Institution, 10th St. & Constitution Ave. NW, Washington, District of Columbia 20560, United States
| | - Fangfu Zhang
- NASA
Astrobiology Institute, Department of Geoscience, University of Wisconsin−Madison, 1215 W Dayton Street, Madison, Wisconsin 53706, United States
| | - Gabriela A. Farfan
- Department
of Mineral Sciences, National Museum of Natural History, Smithsonian Institution, 10th St. & Constitution Ave. NW, Washington, District of Columbia 20560, United States
| | - Huifang Xu
- NASA
Astrobiology Institute, Department of Geoscience, University of Wisconsin−Madison, 1215 W Dayton Street, Madison, Wisconsin 53706, United States
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Badizad MH, Koleini MM, Greenwell HC, Ayatollahi S, Ghazanfari MH. A Deep Look into the Dynamics of Saltwater Imbibition in a Calcite Nanochannel: Temperature Impacts Capillarity Regimes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:9035-9046. [PMID: 32551693 DOI: 10.1021/acs.langmuir.0c00437] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
This research concerns fundamentals of spontaneous transport of saltwater (1 mol·dm-3 NaCl solution) in nanopores of calcium carbonates. A fully atomistic model was adopted to scrutinize the temperature dependence of flow regimes during solution transport under CaCO3 nanoconfinement. The early time of capillary filling is inertia-dominated, and the solution penetrates with a near-planar meniscus at constant velocity. Following a transition period, the meniscus angle falls to a stabilized value, characterizing the capillary-viscous advancement in the calcite channel. At this stage, brine displacement follows a parabolic relationship consistent with the classical Lucas-Washburn (LW) theory. Approaching the slit outlet, the meniscus contact lines spread widely on the solid substrate and brine leaves the channel at a constant rate, in oppose to the LW law. The brine imbibition rate considerably increases at higher temperatures as a result of lower viscosity and greater tendency to form wetting layers on slit walls. We also pointed out a longer primary inertial regime and delayed onset of the viscous-capillary regime at higher temperatures. Throughout the whole span of capillary displacement, transport of sodium and chloride ions is tied to dynamics and diffusion of the water phase, even at the mineral interface. The results presented in this study are of broad implications in diverse science and technological applications.
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Affiliation(s)
- Mohammad Hasan Badizad
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran 11365-11155, Iran
| | - Mohammad Mehdi Koleini
- Sharif Upstream Petroleum Research Institute (SUPRI), Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran 11365-9465, Iran
| | | | - Shahab Ayatollahi
- Sharif Upstream Petroleum Research Institute (SUPRI), Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran 11365-9465, Iran
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4
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Zhao N, Ju F, Pan H, Tang Z, Ling H. Molecular dynamics simulation of the interaction of water and humic acid in the adsorption of polycyclic aromatic hydrocarbons. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:25754-25765. [PMID: 32350842 DOI: 10.1007/s11356-020-09018-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 04/22/2020] [Indexed: 06/11/2023]
Abstract
Humic acid (HA) and water play an important role in polycyclic aromatic hydrocarbons (PAHs) adsorption and biodegradation in soil. In this work, molecular dynamics (MD) and electrostatic potential surfaces (EPSs) simulations are conducted to research the contribution of quartz surface, leonardite humic acid (LHA), and water to PAH adsorption. The adsorption energies between PAHs and LHA are much higher than that between PAHs and quartz. Simulation shows that the hydroxyl and carboxyl groups' attraction by LHA is the main adsorption force between PAHs and LHA. The π-π interaction between PAHs and LHA also contributes to the adsorption process. In addition, the mobility of water on quartz surface is much higher than that of LHA. Water should be regarded as an adsorbate in the system as well as PAHs. However, the presence of water has a remarkable negative effect on the adsorption of PAHs on LHA and quartz. The bridging effect of water could only enhance the stability of the aggregation system. The adsorption contribution of quartz and LHA to PAHs in the soil model tends to 0 if the water layer reaches 2.0 nm. Graphical abstract.
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Affiliation(s)
- Nan Zhao
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Feng Ju
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Hui Pan
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Zhihe Tang
- Research Institute of Safety & Environment Technology, China National Petroleum Corporation, Beijing, 102206, China
| | - Hao Ling
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China.
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5
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Silvestri A, Ataman E, Budi A, Stipp SLS, Gale JD, Raiteri P. Wetting Properties of the CO 2-Water-Calcite System via Molecular Simulations: Shape and Size Effects. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:16669-16678. [PMID: 31714788 DOI: 10.1021/acs.langmuir.9b02881] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Assessment of the risks and environmental impacts of carbon geosequestration requires knowledge about the wetting behavior of mineral surfaces in the presence of CO2 and the pore fluids. In this context, the interfacial tension (IFT) between CO2 and the aqueous fluid and the contact angle, θ, with the pore mineral surfaces are the two key parameters that control the capillary pressure in the pores of the candidate host rock. Knowledge of these two parameters and their dependence on the local conditions of pressure, temperature, and salinity is essential for the correct prediction of structural and residual trapping. We have performed classical molecular dynamics simulations to predict the CO2-water IFT and the CO2-water-calcite contact angle. The IFT results are consistent with previous simulations, where simple point charge water models have been shown to underestimate the water surface tension, thus affecting the simulated IFT values. When combined with the EPM2 CO2 model, the SPC/Fw water model indeed underestimates the IFT in the low-pressure region at all temperatures studied. On the other hand, at high pressure and low temperature, the IFT is overestimated by ∼5 mN/m. Literature data regarding the CO2/water/calcite contact angle on calcite are contradictory. Using our new set of force field parameters, we performed NVT simulations at 323 K and 20 MPa to calculate the contact angle of a water droplet on the calcite {10.4} surface in a CO2 atmosphere. We performed simulations for both spherical and cylindrical droplet configurations for different initial radii to study the size dependence of the water contact angle on calcite in the presence of CO2. Our results suggest that the contact angle of a cylindrical droplet, is independent of droplet size, for droplets with a radius of 50 Å or more. On the contrary, spherical droplets make a contact angle that is strongly influenced by their size. At the largest size explored in this study, both spherical and cylindrical droplets converge to the same contact angle, 38°, indicating that calcite is strongly wetted by water.
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Affiliation(s)
- A Silvestri
- Curtin Institute for Computation, The Institute for Geoscience Research (TIGeR), School of Molecular and Life Sciences , Curtin University , PO Box U1987, Perth , WA 6845 , Australia
| | - E Ataman
- Nano-Science Center, Department of Chemistry , University of Copenhagen , Universitetsparken 5 , København Ø DK-2100 , Denmark
| | - A Budi
- Institute for Frontier Materials , Deakin University , Geelong , VIC 3216 , Australia
| | - S L S Stipp
- Department of Physics , Technical University of Denmark , Fysikvej , DK-2800 Kongens Lyngby , Denmark
| | - J D Gale
- Curtin Institute for Computation, The Institute for Geoscience Research (TIGeR), School of Molecular and Life Sciences , Curtin University , PO Box U1987, Perth , WA 6845 , Australia
| | - P Raiteri
- Curtin Institute for Computation, The Institute for Geoscience Research (TIGeR), School of Molecular and Life Sciences , Curtin University , PO Box U1987, Perth , WA 6845 , Australia
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6
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Kim S, Marcano MC, Becker U. Mechanistic Study of Wettability Changes on Calcite by Molecules Containing a Polar Hydroxyl Functional Group and Nonpolar Benzene Rings. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:2527-2537. [PMID: 30681863 DOI: 10.1021/acs.langmuir.8b03666] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Oil extraction efficiency strongly depends on the wettability status (oil- vs water-wet) of reservoir rocks during oil recovery. Aromatic compounds with polar functional groups in crude oil have a significant influence on binding hydrophobic molecules to mineral surfaces. Most of these compounds are in the asphaltene fraction of crude oil. This study focuses on the hydroxyl functional group, an identified functional group in asphaltenes, to understand how the interactions between hydroxyl groups in asphaltenes and mineral surfaces begin. Phenol and 1-naphthol are used as asphaltene surrogates to model the simplest version of asphaltenes. Adsorption of oil molecules on the calcite {101̅4} surface is described using static quantum-mechanical density functional theory (DFT) calculations and classical molecular dynamics (MD) simulations. DFT calculations indicate that adsorption of phenol and 1-naphthol occurs preferentially between their hydroxyl group and calcite step edges. 1-Naphthol adsorbs more strongly than phenol, with different adsorption geometries due to the larger hydrophobic part of 1-naphthol. MD simulations show that phenol can behave as an agent to separate oil from the water phase and to bind the oil phase to the calcite surface in the water/oil mixture. In the presence of phenol, partial separation of water/oil with an incomplete lining of phenol at the water/oil boundary is observed after 0.2 ns. After 1 ns, perfect separation of water/oil with a complete lining of phenol at the water/oil boundary is observed, and the calcite surface becomes oil-wet. Phenol molecules enclose decane molecules at the water-decane boundary preventing water from repelling decane molecules from the calcite surface and facilitate further accumulation of hydrocarbons near the surface, rendering the surface oil-wet. This study indicates phenol and 1-naphthol to be good proxies for polar components in oil, and they can be used in designing further experiments to test pH, salinity, and temperature dependence to improve oil recovery.
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Affiliation(s)
- Sooyeon Kim
- Department of Earth and Environmental Sciences , University of Michigan , 3021 North University Building, 1100 North University Avenue , Ann Arbor , Michigan 48109-1005 , United States
| | - Maria C Marcano
- Department of Earth and Environmental Sciences , University of Michigan , 3021 North University Building, 1100 North University Avenue , Ann Arbor , Michigan 48109-1005 , United States
| | - Udo Becker
- Department of Earth and Environmental Sciences , University of Michigan , 3021 North University Building, 1100 North University Avenue , Ann Arbor , Michigan 48109-1005 , United States
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7
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Gao Y, Wang X, Yu W, Liu G, Dong X, Wang J. Construction of LiMn2O4 microcubes and spheres via the control of the (104) crystal planes of MnCO3 for high rate Li-ions batteries. RSC Adv 2019; 9:21009-21017. [PMID: 35515518 PMCID: PMC9065749 DOI: 10.1039/c9ra02952d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Accepted: 06/19/2019] [Indexed: 11/21/2022] Open
Abstract
LiMn2O4 cathode materials with different morphologies were produced as a result of the addition of ethanol that interacts with the MnCO3 (104) crystal planes.
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Affiliation(s)
- Yanshen Gao
- School of Chemistry and Environmental Engineering
- Changchun University of Science and Technology
- Changchun 130022
- P. R. China
| | - Xinlu Wang
- School of Chemistry and Environmental Engineering
- Changchun University of Science and Technology
- Changchun 130022
- P. R. China
| | - Wensheng Yu
- School of Chemistry and Environmental Engineering
- Changchun University of Science and Technology
- Changchun 130022
- P. R. China
| | - Guixia Liu
- School of Chemistry and Environmental Engineering
- Changchun University of Science and Technology
- Changchun 130022
- P. R. China
| | - Xiangting Dong
- School of Chemistry and Environmental Engineering
- Changchun University of Science and Technology
- Changchun 130022
- P. R. China
| | - Jinxian Wang
- School of Chemistry and Environmental Engineering
- Changchun University of Science and Technology
- Changchun 130022
- P. R. China
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Budi A, Stipp SLS, Andersson MP. The effect of solvation and temperature on the adsorption of small organic molecules on calcite. Phys Chem Chem Phys 2018; 20:7140-7147. [DOI: 10.1039/c7cp06747j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The effect of multicomponent mixture on small organic molecule adsorption on calcite at nonzero temperature was investigated.
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Affiliation(s)
- A. Budi
- Nano-Science Center
- Department of Chemistry
- University of Copenhagen
- Copenhagen
- Denmark
| | - S. L. S. Stipp
- Nano-Science Center
- Department of Chemistry
- University of Copenhagen
- Copenhagen
- Denmark
| | - M. P. Andersson
- Nano-Science Center
- Department of Chemistry
- University of Copenhagen
- Copenhagen
- Denmark
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9
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Interactions of the Calcite {10.4} Surface with Organic Compounds: Structure and Behaviour at Mineral - Organic Interfaces. Sci Rep 2017; 7:7592. [PMID: 28790315 PMCID: PMC5548931 DOI: 10.1038/s41598-017-06977-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 06/21/2017] [Indexed: 11/29/2022] Open
Abstract
The structure and the strength of organic compound adsorption on mineral surfaces are of interest for a number of industrial and environmental applications, oil recovery, CO2 storage and contamination remediation. Biomineralised calcite plays an essential role in the function of many organisms that control crystal growth with organic macromolecules. Carbonate rocks, composed almost exclusively of calcite, host drinking water aquifers and oil reservoirs. In this study, we examined the ordering behaviour of several organic compounds and the thickness of the adsorbed layers formed on calcite {10.4} surfaces. We used X-ray reflectivity (XRR) to study calcite {10.4} surfaces that were prepared in three alcohols: methanol, isopropanol and pentanol and one carboxylic acid: octanoic acid. All molecules adsorbed in self-assembled layers, where thickness depended on the density and the length of the molecule. For methanol and isopropanol, molecular dynamic simulations (MD) provided complementary information, which allowed us to develop a surface model. Branching in isopropanol induced slightly less ordering because of the additional degree of freedom. Pentanol and octanoic acid adsorbed as single monolayers. The results of this work indicate that adhered organic compounds from the surrounding environment can affect the surface behaviour, depending on properties of the organic compound.
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10
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A molecular dynamics investigation into the adsorption behavior inside {001} kaolinite and {1014} calcite nano-scale channels: the case with confined hydrocarbon liquid, acid gases, and water. APPLIED NANOSCIENCE 2017. [DOI: 10.1007/s13204-017-0563-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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11
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Rodriguez-Navarro C, Vettori I, Ruiz-Agudo E. Kinetics and Mechanism of Calcium Hydroxide Conversion into Calcium Alkoxides: Implications in Heritage Conservation Using Nanolimes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:5183-5194. [PMID: 27149182 DOI: 10.1021/acs.langmuir.6b01065] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Nanolimes are alcohol dispersions of Ca(OH)2 nanoparticles used in the conservation of cultural heritage. Although it was believed that Ca(OH)2 particles were inert when dispersed in short-chain alcohols, it has been recently shown that they can undergo transformation into calcium alkoxides. Little is known, however, about the mechanism and kinetics of such a phase transformation as well as its effect on the performance of nanolimes. Here we show that Ca(OH)2 particles formed after lime slaking react with ethanol and isopropanol and partially transform (fractional conversion, α up to 0.08) into calcium ethoxide and isopropoxide, respectively. The transformation shows Arrhenius behavior, with apparent activation energy Ea of 29 ± 4 and 37 ± 6 kJ mol(-1) for Ca-ethoxide and Ca-isopropoxide conversion, respectively. High resolution transmission electron microscopy analyses of reactant and product phases show that the alkoxides replace the crystalline structure of Ca(OH)2 along specific [hkl] directions, preserving the external hexagonal (platelike) morphology of the parent phase. Textural and kinetic results reveal that this pseudomorphic replacement involves a 3D diffusion-controlled deceleratory advancement of the reaction front. The results are consistent with an interface-coupled dissolution-precipitation replacement mechanism. Analysis of the carbonation of Ca(OH)2 particles with different degree of conversion into Ca-ethoxide (α up to 0.08) and Ca-isopropoxide (α up to 0.04) exposed to air (20 °C, 80% relative humidity) reveals that Ca-alkoxides significantly reduce the rate of transformation into cementing CaCO3 and induce the formation of metastable vaterite, as opposed to stable calcite which forms in untransformed Ca(OH)2 samples. Similar effects are obtained when a commercial nanolime partially transformed into Ca-ethoxide is subjected to carbonation. Such effects may hamper/delay the strengthening or consolidation effects of nanolimes, thus having important implications in the conservation of cultural heritage.
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Affiliation(s)
- Carlos Rodriguez-Navarro
- Department of Mineralogy and Petrology, University of Granada , Fuentenueva s/n, 18002 Granada, Spain
| | - Irene Vettori
- Department of Mineralogy and Petrology, University of Granada , Fuentenueva s/n, 18002 Granada, Spain
| | - Encarnacion Ruiz-Agudo
- Department of Mineralogy and Petrology, University of Granada , Fuentenueva s/n, 18002 Granada, Spain
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12
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Visualising the molecular alteration of the calcite (104) - water interface by sodium nitrate. Sci Rep 2016; 6:21576. [PMID: 26877225 PMCID: PMC4753505 DOI: 10.1038/srep21576] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 01/22/2016] [Indexed: 02/07/2023] Open
Abstract
The reactivity of calcite, one of the most abundant minerals in the earth’s crust, is determined by the molecular details of its interface with the contacting solution. Recently, it has been found that trace concentrations of NaNO3 severely affect calcite’s (104) surface and its reactivity. Here we combine molecular dynamics (MD) simulations, X-ray reflectivity (XR) and in situ atomic force microscopy (AFM) to probe the calcite (104) – water interface in the presence of NaNO3. Simulations reveal density profiles of different ions near calcite’s surface, with NO3− able to reach closer to the surface than CO32− and in higher concentrations. Reflectivity measurements show a structural destabilisation of the (104) surfaces’ topmost atomic layers in NaNO3 bearing solution, with distorted rotation angles of the carbonate groups and substantial displacement of the lattice ions. Nanoscale AFM results confirm the alteration of crystallographic characteristics, and the ability of dissolved NaNO3 to modify the structure of interfacial water was observed by AFM force spectroscopy. Our experiments and simulations consistently evidence a dramatic deterioration of the crystals’ surface, with potentially important implications for geological and industrial processes.
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Rodriguez-Navarro C, Elert K, Ševčík R. Amorphous and crystalline calcium carbonate phases during carbonation of nanolimes: implications in heritage conservation. CrystEngComm 2016. [DOI: 10.1039/c6ce01202g] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Alcohol dispersions of Ca(OH)2nanoparticles, the so-called nanolimes, carbonate in air following first order kinetics,viaa multistep, non-classical crystallization process involving amorphous and crystalline CaCO3phases.
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Affiliation(s)
| | - Kerstin Elert
- Dept. of Mineralogy and Petrology
- University of Granada
- 18002 Granada, Spain
| | - Radek Ševčík
- Institute of Theoretical and Applied Mechanics AS CR
- Centre of Excellence Telč
- 588 56 Telč, Czech Republic
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