Article
Geochemistry & Geophysics
Anna L. Harrison, Pascale Benezeth, Jacques Schott, Eric H. Oelkers, Vasileios Mavromatis
Summary: The experiment showed that at 25 and 35 degrees Celsius, nesquehonite transforms into dypingite through dissolution and re-precipitation, leading to significant exchange of Mg and C between solid and fluid. During the transformation, the initial isotopic composition of the solid phase was overwritten, indicating that isotopic equilibrium likely occurred between dypingite and fluid.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Construction & Building Technology
Zhen Li, Zhichao Zhang, Jihui Qin, Yanfei Yue, Jueshi Qian
Summary: This paper studies the effects of introducing nesquehonite seeds on the performance of reactive magnesia cement (RMC). It shows that nesquehonite seeds can facilitate the hydration of RMC, resulting in reduced setting times and increased nesquehonite formation and carbonation degree. Additionally, nesquehonite seeds combined with hydration agent can promote the compressive strength and CO2 sequestration capacity of RMC.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Review
Environmental Sciences
Faisal W. K. Khudhur, John M. MacDonald, Alice Macente, Luke Daly
Summary: Passive carbonation of alkaline wastes is a promising method for CO2 capture and storage. This review summarizes the extant research on passive carbonation of alkaline wastes and discusses the factors that affect this process and the future research directions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Chemical
Sirine Guermech, Julien Mocellin, Ilies Tebbiche, Lan-Huong Tran, Guy Mercier, Louis-Cesar Pasquier
Summary: The precipitation kinetics of hydromagnesite were studied in a MgO-CO2-H2O medium. It was found that the growth rate increases with temperature and supersaturation, and the magma density has a negative impact on the grain size.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Engineering, Environmental
Yihao Li, Hongmei Tang, Xiangqin Peng, Shiyang Tao, Jie Ding, Meiqing Chen, Pingxiao Wu, Nengwu Zhu
Summary: The dynamic interactions between iron (Fe) oxides and organic matter (OM) are crucial for the geochemical cycling of carbon (C) and toxic trace metals. This study investigated the mechanism of fine iron mineral structure, fulvic acid (FA) sequestration, and hydrated Cu(II) coordination on Fe oxides using several analytical techniques. It was found that the dosage of FA influenced the formation of Fe oxides, with a preference for Fe-O tetrahedral structures. FA molecules primarily interacted with the surfaces of Fe oxides through van der Waals forces. Hydrated Cu(II) oxides were mainly present as divalent oxidation states on the surface of iron oxides and coordinated with phenolic hydroxyl groups of FA and Fe oxides. These findings provide insights into the geochemical processes of Fe, C, and toxic trace metals.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Multidisciplinary Sciences
Gen-ichiro Yamamoto, Atsushi Kyono, Satoru Okada
Summary: The structural differences among amorphous magnesium carbonate (AMC) samples synthesized at different temperatures were not substantial, and all exhibited medium-range order similar to hydromagnesite.
SCIENTIFIC REPORTS
(2021)
Review
Green & Sustainable Science & Technology
Baizhi Wu, Haibin Wang, Chunlei Li, Yuan Gong, Yi Wang
Summary: To prevent long-term pollution of land and water by industrial gypsum by-products, the utilization of this resource has become a priority. The indirect synthesis of calcium carbonate from the industrial by-product gypsum has received significant attention as a viable method for resource utilization. This paper discusses the current state of development, compares different indirect mineralization systems, and addresses challenges such as additive recycling and process simplification. It provides guidelines for laboratory research and practical applications in the indirect mineralization of by-product gypsum.
Article
Geochemistry & Geophysics
T. R. Jones, J. Poitras, D. Paterson, G. Southam
Summary: Mined sub-aerially stored kimberlite can be a valuable resource for carbon sequestration, as demonstrated by the weathering process that produces extensive secondary carbonates. The examination of the samples from the Cullinan Diamond Mine tailings in South Africa showed that the weathered kimberlite hosts a diverse microbiome consistent with soil and hydrocarbon degradation, indicating its potential for carbon sequestration.
Article
Green & Sustainable Science & Technology
Xiaohui Mei, Qing Zhao, Junye Zhou, Xinyu Lang, Yi Min, Henrik Saxen, Ron Zevenhoven
Summary: This study evaluated the leachability of common minerals of steel slag (SS) in an acidic solution through thermodynamic analysis and leaching tests. The results showed differences in the leachability of different minerals, and the importance and mechanism of SS-based CCUS were studied.
JOURNAL OF SUSTAINABLE METALLURGY
(2021)
Article
Environmental Sciences
Sanoop Kumar Puthiya Veetil, Michael Hitch
Summary: Ex situ aqueous mineral carbonation of ultramafic mining waste is a promising technology for CO2 sequestration, especially from small- to medium-scale emitters. The locally available ultramafic material shows potential for sequestering CO2 and producing aragonite and hydromagnesite as major products through aqueous mineral carbonation at ambient temperature. The method could potentially be integrated into existing mineral extraction and tailings management operations.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Review
Green & Sustainable Science & Technology
Bo Wang, Zihe Pan, Huaigang Cheng, Zhien Zhang, Fangqin Cheng
Summary: Mineral carbonation using industrial solid waste byproduct gypsum is a promising strategy to sequester carbon dioxide and mitigate global warming. With advantages such as fast carbonation rate and high carbonation reactivity, this process is crucial for addressing environmental issues such as byproduct gypsum stacking and carbon dioxide concentration.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Geochemistry & Geophysics
Joseph A. Graly, Kathy J. Licht, Nicole A. Bader, Christine M. Kassab, David L. Bish, Michael R. Kaplan
Summary: The study analyzes the chemical and mineralogical transformations in Mt Achernar Moraine, finding that salts and carbonate minerals increase with exposure age while clay minerals and amorphous cements break down in smaller proportions. The formation of most minerals is attributed to atmospheric acids reacting with other minerals, and these reactions occur in both subglacial and surface environments.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Review
Environmental Sciences
Shashikant Yadav, Anurag Mehra
Summary: Mineral carbonation is a stable and long-term CO2 storage method that can be used in places where there is a lack of underground cavities, mainly using minerals rich in calcium and magnesium for carbonation reactions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Construction & Building Technology
Rotana Hay, Ghanim Kashwani, Kemal Celik
Summary: The limited use of lime in construction due to the emergence of modern Portland cement has shown potential as a sustainable alternative to cement. By studying the carbonation and strength development of calcined limestone, it was found that raw limestone as a partial replacement significantly improved carbonation degree and mechanical properties. The formation of interconnected calcite network led to higher compressive strength compared to disjoint particles or agglomerates formed by supercritical CO2.
CEMENT AND CONCRETE RESEARCH
(2021)
Article
Engineering, Chemical
Mingzhi Luo, Guoquan Zhang, Yuguo Fang, Lingzhuo Cao, Zhanbo Guo, Kun Wang, Jia Li
Summary: This article presents a two-step synthesis method for synthesizing calcium carbonate using ammonium carbonate and calcium chloride as raw materials. The pH of the mineralized solution was studied under different factors, such as temperature and ammonium carbonate concentration. The results showed that increasing the temperature promoted the formation of submicron calcite type calcium carbonate, while changing the concentration of ammonium carbonate had little effect on the crystal phase and size of the product.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Amanda R. Stubbs, Carlos Paulo, Ian M. Power, Baolin Wang, Nina Zeyen, Sasha Wilson
Summary: Enhanced rock weathering (ERW) can be used by the mining industry to reduce greenhouse gas emissions by sequestering CO2 through solubility and mineral trapping. This study examined the CO2 removal rates of different feedstocks, finding that the mineralogical composition and water content had the greatest impact on CO2 fluxes.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2022)
Article
Geochemistry & Geophysics
Katherine N. Snihur, Logan R. Swaren, Konstantin von Gunten, Nicholas B. Harris, Sasha Wilson, Murray K. Gingras, Kurt O. Konhauser, Shannon L. Flynn, Daniel S. Alessi
Summary: The study demonstrates the potential of using laboratory methods to predict the inorganic chemistry of flowback and produced water in hydraulic fracturing operations. High salinity experiments showed an increase in concentrations of dissolved species with increasing salinity. The research also highlights the environmental risks associated with using recycled produced water in hydraulic fracturing, especially in the event of a spill.
Article
Geochemistry & Geophysics
Owen P. Missen, Barbara Etschmann, Stuart J. Mills, Santonu K. Sanyal, Rahul Ram, Jeremiah Shuster, Maria A. D. Rea, Maija J. Raudsepp, Xi-Ya Fang, Ella R. Lausberg, Erik Melchiorre, Jeremy Dodsworth, Yang Liu, Sasha Wilson, Joel Brugger
Summary: The study investigates the mobility and behavior of tellurium (Te) in the environment by comparing two Te-enriched mining sites in Mexico. The findings suggest that Te is released to the environment through the dissolution of primary Te minerals and undergoes dynamic cycling. The study also reveals the presence of secondary Te minerals and their association with microbial processes.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Article
Geology
Maija J. Raudsepp, Sasha Wilson, Bree Morgan, Avni Patel, Scott G. Johnston, Emma J. Gagen, Stewart J. Fallon
Summary: This study evaluates the crystallization pathway of Ca-Mg carbonates in the Coorong Lakes and suggests that high magnesium calcite and magnesite likely precipitate via a non-classical crystallization pathway. The lakes' water only becomes supersaturated relative to amorphous carbonate phases after extensive evaporation in late summer, limiting the precipitation through non-classical crystallization.
Article
Geochemistry & Geophysics
Weihua Liu, Yuan Mei, Barbara Etschmann, Matthew Glenn, Colin M. MacRae, Sam C. Spinks, Chris G. Ryan, Joel Brugger, David J. Paterson
Summary: The incorporation mechanisms of germanium in sphalerite have been investigated through experiments and molecular simulations. It is found that germanium can be incorporated into sphalerite through charge balance or coupled substitution with other metal ions. This study provides insights into the formation and extraction processes of germanium in zinc ores.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2023)
Article
Multidisciplinary Sciences
G. B. Douglas, S. M. Reddy, D. W. Saxey, C. M. MacRae, N. A. S. Webster, L. J. Beeching
Summary: Anionic clay minerals called hydrotalcites (HTC) effectively capture various contaminants from solution, but don't provide long-term actinide isolation. In this study, radionuclide-loaded nanoscale HTC was formed and transformed, resulting in U segregation at mineral interfaces and the formation of interface-hosted mineral grains. These U-rich phases recorded high extraction and concentration efficiencies. Co-existing minerals with suitable properties for nuclear waste disposal were also identified.
SCIENTIFIC REPORTS
(2023)
Article
Physics, Applied
Xingshuo Huang, Alan Salek, Andrew G. G. Tomkins, Colin M. M. MacRae, Nicholas C. C. Wilson, Dougal G. G. McCulloch, Jodie E. E. Bradby
Summary: In this study, the hardness of two different forms of lonsdaleite was measured using nanoindentation. The results indicate that the hardness of lonsdaleite is similar to that of diamond, suggesting that polycrystalline lonsdaleite is not significantly harder than similar forms of diamond.
APPLIED PHYSICS LETTERS
(2023)
Article
Plant Sciences
Paula Moolhuijzen, Lilian M. V. P. Sanglard, David J. Paterson, Sean Gray, Karina Khambatta, Mark J. Hackett, Ayalsew Zerihun, Mark R. Gibberd, Fatima Naim
Summary: In susceptible wheat cultivars infected with Pyrenophora tritici-repentis, calcium oscillations are modified, resulting in frozen host defence signals and silencing of recognition and defence mechanisms. In contrast, resistant cultivars show heightened defence response and calcium accumulation at later stages of disease development. By using gene expression data and high-resolution elemental imaging, the study provides insights into spatial and temporal changes in the asymptomatic green region, highlighting the benefits of spatially resolved molecular analysis and nutrient mapping in understanding complex plant-pathogen interactions.
JOURNAL OF EXPERIMENTAL BOTANY
(2023)
Letter
Multidisciplinary Sciences
Andrew G. Tomkins, Nicholas C. Wilson, Colin MacRae, Alan Salek, Matthew Field, Helen E. A. Brand, Andrew D. Langendam, Natasha R. Stephen, Aaron Torpy, Zsanett Pinter, Lauren A. Jennings, Dougal McCulloch
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Biochemistry & Molecular Biology
Cameron W. Evans, Abigail Egid, Somayra S. A. Mamsa, David J. Paterson, Diwei Ho, Carole A. Bartlett, Brooke Fehily, Brittney R. Lins, Melinda Fitzgerald, Mark J. Hackett, Nicole M. Smith
Summary: Understanding the chemical events following trauma to the central nervous system could help identify causative mechanisms and potential interventions for protecting neural tissue. In a rat model of partial optic nerve transection injury, researchers used synchrotron X-ray fluorescence microscopy to map the distribution of metals and related elements in white matter tracts. The study found significant changes in copper levels and widespread metal imbalance in response to central nervous system trauma, suggesting that metal homeostasis may be a potential target for intervention in limiting damage following neural injuries.
ACS CHEMICAL NEUROSCIENCE
(2023)
Article
Geochemistry & Geophysics
Felicia J. Haase, Colton J. Vessey, Ryo Sekine, David Welsh, Jessica Hamilton, Yun Wang, Jessica White, Donald E. Canfield, Enzo Lombi, William W. Bennett
Summary: This article presents the geochemistry of vanadium (V) in low-oxygen marine environments and its interactions with reduced iron minerals such as green rust. The study finds that carbonate green rust can efficiently remove V from seawater under anoxic conditions, and V-rich green rust oxidizes to lepidocrocite in the presence of aerated seawater. The work provides further insights into V cycling and removal mechanisms in both modern and ancient marine systems.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Wenjing Chen, Wenqian Wang, Zhouzun Xie, Franco Centurion, Bin Sun, David J. Paterson, Simon Chang-Hao Tsao, Dewei Chu, Yansong Shen, Guangzhao Mao, Zi Gu
Summary: This study presents a multidimensional, quantitative approach to investigate the tissue penetration behavior of nanoparticles in tumor spheroids. The results reveal that nanoparticles of different sizes have different penetration pathways and abilities. The study provides important insights into the design of nanoparticles for high accumulation at a target site.
Article
Mineralogy
Ian E. Grey, Rupert Hochleitner, Anthony R. Kampf, Stephanie Boer, Colin M. MacRae, John D. Cashion, Christian Rewitzer, William G. Mumme
Summary: Manganrockbridgeite, a new member of the rockbridgeite group, is found in the Hagendorf-Sud pegmatite in Bavaria. It forms compact shiny greenish black blades and has monoclinic symmetry. The crystal structure of manganrockbridgeite differs from other rockbridgeite-group minerals in terms of Fe3+ and vacancies ordering.
EUROPEAN JOURNAL OF MINERALOGY
(2023)
Article
Mineralogy
Rupert Hochleitner, Christian Rewitzer, Ian E. Grey, William G. Mumme, Colin M. MacRae, Anthony R. Kampf, Erich Keck, Robert W. Gable, Alexander M. Glenn
Summary: Whiteite-(CaMnFe) is a new whiteite-subgroup member of the jahnsite group discovered in the Hagendorf-Sud pegmatite in Bavaria, Germany. It occurs as colorless to pale yellow rod-like crystals and has a monoclinic crystal structure.
EUROPEAN JOURNAL OF MINERALOGY
(2023)
Article
Mineralogy
Erich Keck, Ian E. Grey, Colin M. MacRae, Stephanie Boer, Rupert Hochleitner, Christian Rewitzer, William G. Mumme, A. Matt Glenn, Cameron Davidson
Summary: This study reports the first occurrences of secondary phosphate minerals kenngottite, allanpringite, iangreyite, and nizamoffite in the Hagendorf Sud pegmatite, and characterizes their crystal chemistry and phase associations.
EUROPEAN JOURNAL OF MINERALOGY
(2022)
