Article
Chemistry, Physical
Yi-Ming Ju, Fang Huang, Xin Ding, Li-Bo Mao, Shu-Hong Yu
Summary: This study investigates the mechanism of Mg2+ ion-regulated mineralization of CaCO3 by tracing Mg isotope fractionation. The different mineralization pathways of CaCO3 under different Mg2+ ion concentrations are clarified, and the detailed regulatory role of Mg2+ ions at different stages of mineralization is proposed. These results provide important insights for finely controlling the phase of crystalline products.
Article
Chemistry, Physical
Yi-Ming Ju, Fang Huang, Xin Ding, Li-Bo Mao, Shu-Hong Yu
Summary: This study clarifies the different mineralization pathways of CaCO3 under different Mg2+ ion concentrations by tracing Mg isotope fractionation. The detailed regulatory role of Mg2+ ions at different stages of mineralization is proposed.
Article
Multidisciplinary Sciences
Jennifer Zehner, Anja Royne, Pawel Sikorski
Summary: Biocementation is a process based on either microbial-induced carbonate precipitation or enzyme-induced carbonate precipitation to create sustainable, consolidated porous material through the biomineralization of CaCO3 in a granular medium. A microscopy sample cell combined with confocal laser scanning microscopy allows real time monitoring of CaCO3 precipitation and pH, with the ability to characterize the precipitated crystals without sample disturbance. This approach offers a powerful tool for knowledge-based improvements in biocementation.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Environmental
Jiajie Wang, Noriaki Watanabe, Kosuke Inomoto, Masanobu Kamitakahara, Kengo Nakamura, Takeshi Komai, Noriyoshi Tsuchiya
Summary: This study explores a key challenge in aqueous indirect CO2 mineralization, proposing and experimentally examining a sustainable process for enhanced CO2 mineralization using a potentially recyclable alkaline solution of the chelating agent GLDA at near-room temperatures. The process involves enhanced Ca extraction from silicates, Ca carbonation, and regeneration of the extraction solution via CO2 gas dissolution. The study demonstrates the feasibility of enhanced Ca extraction with almost all GLDA molecules combining with Ca at an optimum condition, contributing to efficient Ca carbonation and solution regeneration.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Multidisciplinary
Panagiota D. Natsi, Petros G. Koutsoukos
Summary: This study investigated the growth of calcium carbonate on Acutodesmus obliquus microalgae and found that the presence of microalgae cultivation medium and illumination of supersaturated solutions accelerated the precipitation of CaCO3. The cell concentration of microalgae also affected the growth rate of calcite crystals.
Article
Chemistry, Inorganic & Nuclear
Bingzhen Zhang, Yahui Zhu, Shunli Shi, Ying Li, Yanping Luo, Zhixin Huang, Weiming Xiao, Shuhua Wang, Pengfei Zhang, Yuan Shu, Chao Chen
Summary: Hierarchical porosity and high surface area carbonates and their derivatives are obtained through a facile and green mechanochemistry combined with the salt-assisted tactic. This method eliminates the use of solvents and creates pores in just 5 minutes through ball milling. Pd/H-CaCO3 catalyst exhibits excellent catalytic efficiency in the synthesis of aniline and dye degradation. The combination of mechanochemistry and salt-assisted tactic provides a convenient and efficient pathway for processing porous materials.
INORGANIC CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Matteo Hirsch, Lorenzo Lucherini, Ran Zhao, Alexandra Clara Saracho, Esther Amstad
Summary: Nature can control the structure and composition of materials, resulting in organic/inorganic composites with superior mechanical properties. Inspired by this, researchers have developed a process that utilizes compartmentalization to fabricate high-strength porous CaCO3-based composites using nature-derived materials. This system has potential applications in art restoration, coral regeneration, and repair of natural mineral-based materials.
Article
Chemistry, Multidisciplinary
Steven Bustillos, Dale Prentice, Erika Callagon La Plante, Bu Wang, Gaurav Sant, Dante Simonetti
Summary: The separation of CO2 from stable mineral carbonates is an attractive emissions reduction strategy, and ion exchange processes can be used as an alternative method to provide alkalinity for sustainable and economic mineralization processes.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Xiedong Ren, Yuan Lu, Qiang Wei, Liusi Yu, Kaiyuan Zhai, Jiayi Tang, Hu Wang, Juan Xie
Summary: The influence of Ca2+ on the growth mechanism of CO2 corrosion products was explored through weight loss, in situ electrochemical measurements, and analysis of corrosion products. The increase in Ca2+ concentration in the solution weakened the crystallinity of the product film, FexCa(1-x)CO(3), gradually transforming it into an amorphous structure. This resulted in reduced protectiveness and an elevated corrosion rate. Higher concentrations of Ca2+ led to unstable growth of FexCa1-_xCO3. At 10000 mg L-1 Ca2+, complex FexCa1_xCO(3) structures with varying Ca content were formed. A linear relation between Ca2+ concentration in the solution and the molar fraction of Ca in the film was also proposed.
Article
Engineering, Environmental
Gyudae Sim, Sujin Hong, Seokyoon Moon, Soyoung Noh, Junhee Cho, Purnaning Tuwuh Triwigati, Ah-Hyung Alissa Park, Youngjune Park
Summary: The paper proposes a novel concept for carbon mineralization, which not only fixes CO2 but also recovers rare earth elements using the pH swing-assisted carbonation process. Experimental results show that using oxalic acid as a precipitation agent is advantageous for both CO2 storage and REE recovery.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Geochemistry & Geophysics
Angeles Fernandez-Gonzalez, Alba Lozano-Letellier, Begona Fernandez
Summary: Selenium can become toxic due to its bioaccumulation potential, but can be immobilized by the mineral calcite. The incorporation of Se into calcite can be influenced by the presence of foreign ions in aqueous solution, affecting the precipitation of different phases such as vaterite and aragonite. The aging process of calcium carbonates precipitated from solutions highly supersaturated with respect to CaCO3 and slightly supersaturated with respect to CaSeO3 & BULL;H2O showed that vaterite hosting Se had low crystallinity and the transformation to calcite was inhibited.
Article
Construction & Building Technology
Anhui Wang, Qiwei Zhan, Changhao Fu, Yaqi Wang, Juanlan Zhou, Yongsheng Zhang
Summary: This study demonstrates the feasibility of using microbial mineralization coupled with inorganic minerals to achieve full-depth repair of cracks in cement-based materials. A self-repairing carrier with a multilayer core-shell structure was prepared, and the compatibility between microorganisms and the carrier was studied. The repair mechanism was identified as microbial mineralization repairing the crack surface and inorganic reaction producing ettringite to repair the interior of the crack.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Chemistry, Physical
Mohd Danish Khan, YoungJu Song, Sonam Shakya, Chaeyeon Lim, Ji Whan Ahn
Summary: It was discovered that calcium carbonate crystals can effectively immobilize and transmit arsenic oxyanions in water, with maximum immobilization efficiencies of 97.3% and 86.0% for As(V) and As(III) respectively. Experimental results confirmed the adsorption and incorporation of arsenic oxyanions onto calcium carbonate crystals. Molecular dynamic simulations revealed a higher interaction propensity between As(V) and calcium carbonate/vaterite formed during in situ carbonation, suggesting that calcite could be an important reservoir for arsenic in various geological contexts.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Materials Science, Multidisciplinary
Li-Mei Shang, Jun Jiang, Shu-Hong Yu
Summary: This study reports a facile method to synthesize corn-like Mg-calcite mesocrystals using only Ca2+ and Mg2+ from pure ACC. The resulting mesocrystals consist of many nanocubes with common crystallographic orientation, displaying excellent single crystal features. In the crystallization process, ACC nanospheres rapidly agglomerate into Mg-calcite corn-like mesocrystals through oriented attachment in a certain direction, shedding new light on the role of seawater in the formation of biological Mg-calcite.
SCIENCE CHINA-MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Tian Fei, Han-Jing Yi, Robert Zboray, Xiao-Qiang Yan, Si-Si Song, Lei Ren, Huizhang Guo, Yuan Jiang
Summary: In this study, an enzymatic mineralization approach was developed to deposit CaCO3 minerals in wood, resulting in the fabrication of high-performance mineralized wood in a sustainable manner.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Felipe Diaz-Soler, Carlos Rodriguez-Navarro, Encarnacion Ruiz-Agudo, Andronico Neira-Carrillo
Summary: By stabilizing calcium oxalate precursors in vitro using PAA, the nucleation of ACO nanoparticles can be delayed, which may contribute to a better understanding of the pathological mineralization leading to urolithiasis in mammals.
Article
Geochemistry & Geophysics
L. Monasterio-Guillot, A. Fernandez-Martinez, E. Ruiz-Agudo, C. Rodriguez-Navarro
Summary: The weathering and carbonation of primary silicates are crucial for geochemical cycling of elements and climate regulation. The study investigated dissolution-carbonation reactions of Ca-Mg pyroxenes, revealing low-magnesium calcite and amorphous silica as main products. The presence of Fe and Al in the pyroxenes enhances cation release and contributes to secondary phase formation.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Construction & Building Technology
R. Navarro, D. Pereira, E. Fernandez de Arevalo, E. M. Sebastian-Pardo, C. Rodriguez-Navarro
Summary: This study provides a thorough examination of the main features, decay causes, and mechanisms of serpentinites on the main facade of the 16th century Royal Chancery in Granada, Spain. Various decay factors are identified, with chemical weathering of sulfides and the formation of sulfate salts considered the main cause of deterioration. Unsuitable restoration treatments, environmental pollution, and the proximity of slabs to the ground also contribute to their decay. This research enhances understanding of the deterioration process of serpentinite ornaments and proposes appropriate conservation measures.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Materials Science, Biomaterials
Encarnacion Ruiz-Agudo, Cristina Ruiz-Agudo, Fulvio Di Lorenzo, Pedro Alvarez-Lloret, Aurelia Ibanez-Velasco, Carlos Rodriguez-Navarro
Summary: This study demonstrates that citrate not only stabilizes liquid-like calcium phosphate precursors, but also influences the formation process of bone mineralization, providing new clues to answer the long-standing question of why natural evolution favored HAp as the mineral phase in bone.
ACS BIOMATERIALS SCIENCE & ENGINEERING
(2021)
Article
Geochemistry & Geophysics
L. Monasterio-Guillot, C. Rodriguez-Navarro, E. Ruiz-Agudo
Summary: Weathering of primary silicate minerals under acidic conditions results in the formation of cracks and silica precipitates, with more abundance in the case of augite due to its faster reaction rate. Dissolution of diopside leads to the formation of an amorphous magnesium silicate hydrate precursor, indicating high pH conditions during dissolution process.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2021)
Review
Construction & Building Technology
Kerstin Elert, Carlos Rodriguez-Navarro
Summary: Significant progress has been made in understanding the degradation processes affecting building and ornamental stone in recent decades. However, there is still limited understanding of stone damage caused by swelling clays, which hinders the development of effective conservation treatments. This article reviews the damage process associated with swelling clays, discusses the proposed mechanisms for its development, and examines the key factors controlling its origin, evolution, and severity. Alternative treatments and conservation approaches are also presented and discussed.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Kerstin Elert, Fadwa Jroundi, Cristina Benavides-Reyes, Elen Correa Gomez, Davide Gulotta, Carlos Rodriguez-Navarro
Summary: Earth is an important construction material throughout history but requires constant maintenance and consolidation. This study compares the effectiveness of different consolidants and methods for rammed earth, providing recommendations for optimizing consolidation treatments.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Chemistry, Applied
Jing He, Weiqiang Zhou, Dongbo Hu, Shaojun Liu, Jorge Otero, Carlos Rodriguez-Navarro
Summary: This research focuses on the characterization and identification of degradation mechanisms of the wall paintings at the Samye Temple in Tibet. The findings provide insights into the traditional manufacturing process of historic wall paintings in Tibet and contribute to further conservation activities of this culturally significant temple.
Article
Environmental Sciences
Fadwa Jroundi, Cristina Povedano-Priego, Maria Pinel-Cabello, Michael Descostes, Pierre Grizard, Bayaarma Purevsan, Mohamed L. Merroun
Summary: Uranium roll-front deposits can be economically extracted using in situ recovery (ISR) mining technology. The use of this technology may affect the subsurface microbiota and their functionality in extreme environments. This study explores the transcriptional activities and metabolic capabilities of microorganisms in a U roll-front deposit in Zoovch Ovoo, Mongolia. It demonstrates the microbial adaptation to the geochemical conditions and their contribution to the stabilization of U ore deposits.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Cristina Povedano-Priego, Fadwa Jroundi, Pier L. Solari, Isabel Guerra-Tschuschke, Maria del Mar Abad-Ortega, Alexander Link, Ramiro Vilchez-Vargas, Mohamed L. Merroun
Summary: In this study, the impact of bentonite microbial communities on the allotropic transformation of Se(IV) bioreduction products under DGR relevant conditions was investigated. Moreover, the Se amendment-dependent shifts in the bentonite microbial populations were assessed. The results showed that the bentonite color changed from orange to black after selenite treatment, and the allotropic changes of Se bioreduction products were tracked using analytical techniques. The distribution of strains involved in Se(IV) reduction and Se(0) allotropic biotransformation potential was identified.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Maria Pinel-Cabello, Ruy Jauregui, Fadwa Jroundi, Robert Geffers, Michael Jarek, Alexander Link, Ramiro Vilchez-Vargas, Mohamed L. Merroun
Summary: This study investigates the mechanisms of Selenate reduction at different concentrations. It reveals that at lower concentrations, Selenate is mainly reduced to Se(IV) through enzymatic reactions, while at higher concentrations, a novel Selenate reduction and biotransformation process is proposed, leading to the formation of stable and insoluble t-Se nanomaterials.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
Miguel Burgos-Ruiz, Kerstin Elert, Encarnacion Ruiz-Agudo, Helmut Coelfen, Carlos Rodriguez-Navarro
Summary: A novel solvothermal synthesis process is developed to obtain highly reactive nanostructured Ca(OH)(2) particles, which can be easily functionalized with silica-gel derivatives. This functionalization improves the reactivity and bonding of nanolimes, and can also be used as a self-integrated coupling agent.
Article
Chemistry, Multidisciplinary
Miguel Burgos-Ruiz, Gloria Pelayo-Punzano, Encarnacion Ruiz-Agudo, Kerstin Elert, Carlos Rodriguez-Navarro
Summary: A novel solvothermal method was reported for synthesizing bassanite nanoparticles using amorphous Ca-ethoxide as a precursor, resulting in nanorods with high specific surface area and enhanced reactivity. These nanoparticles have potential applications in various fields.
CHEMICAL COMMUNICATIONS
(2021)
