scholarly journals Calcite seed-assisted microbial induced carbonate precipitation (MICP) and its potential in biocementation

2020 ◽  
Author(s):  
Jennifer Zehner ◽  
Anja Røyne ◽  
Pawel Sikorski
Keyword(s):  
Calcium Carbonate ◽  
Crystallization Process ◽  
Biological Process ◽  
Precipitation Process ◽  
Carbonate Precipitation ◽  
Amorphous Calcium Carbonate ◽  
Calcium Carbonate Precipitation ◽  
Mineral Precipitation ◽  
Solid Materials ◽  
Significant Difference

Microbial-induced calcium carbonate precipitation (MICP) is a biological process inducing biomineralization of CaCO3. This can be used to form a solid, concrete-like material. To be able to use MICP successfully for producing solid materials, it is important to understand the formation process of the material in detail. It is well known, that crystallization surfaces can influence the precipitation process. Therefore, we present in this contribution a systematic study investigating the influence of calcite seeds on the MICP processes. We focus on the pH changes during the crystallization process measured with absorption spectroscopy and on the optical density (OD) signal to analyze the precipitation process. Furthermore, optical microscopy was used to visualize the precipitation processes in the sample and connect them to changes in pH and OD. We show that there is a significant difference in the pH evolution between samples with and without calcite seeds present and that the shape of the pH evolution and the changes in OD can give detailed information about the mineral precipitation and transformations. In the presented experiments we show that amorphous calcium carbonate (ACC) can also precipitate in the presence of initial calcite seeds, which can have consequences for consolidated MICP materials.

scholarly journals Calcite seed-assisted microbial induced carbonate precipitation (MICP)

PLoS ONE ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. e0240763
Author(s):  
Jennifer Zehner ◽  
Anja Røyne ◽  
Pawel Sikorski
Keyword(s):  
Calcium Carbonate ◽  
Systematic Study ◽  
Biological Process ◽  
Precipitation Process ◽  
Carbonate Precipitation ◽  
Amorphous Calcium Carbonate ◽  
Calcium Carbonate Precipitation ◽  
Mineral Precipitation ◽  
Solid Materials ◽  
Significant Difference

Microbial-induced calcium carbonate precipitation (MICP) is a biological process inducing biomineralization of CaCO3. This can be used to form a solid, concrete-like material. To be able to use MICP successfully to produce solid materials, it is important to understand the formation process of the material in detail. It is well known that crystallization surfaces can influence the precipitation process. Therefore, we present in this contribution a systematic study investigating the influence of calcite seeds on the MICP process. We focus on the changes in the pH and changes of the optical density (OD) signal measured with absorption spectroscopy to analyze the precipitation process. Furthermore, optical microscopy was used to visualize the precipitation processes in the sample and connect them to changes in the pH and OD. We show, that there is a significant difference in the pH evolution between samples with and without calcite seeds present and that the shape of the pH evolution and the changes in OD can give detailed information about the mineral precipitation and transformations. In the presented experiments we show, that amorphous calcium carbonate (ACC) can also precipitate in the presence of initial calcite seeds and this can have implications for consolidated MICP materials.

scholarly journals Mineralogy of microbially induced calcium carbonate precipitates formed using single cell drop-based microfluidics

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Neerja M. Zambare ◽  
Nada Y. Naser ◽  
Robin Gerlach ◽  
Connie B. Chang
Keyword(s):  
Calcium Carbonate ◽  
Cell Encapsulation ◽  
Carbonate Precipitation ◽  
Interior Structure ◽  
Amorphous Calcium Carbonate ◽  
Calcium Carbonate Precipitation ◽  
Mineral Precipitation ◽  
E Coli ◽  
Precipitate Nucleation ◽  
Over Time

Abstract Microbe-mineral interactions are ubiquitous and can facilitate major biogeochemical reactions that drive dynamic Earth processes such as rock formation. One example is microbially induced calcium carbonate precipitation (MICP) in which microbial activity leads to the formation of calcium carbonate precipitates. A majority of MICP studies have been conducted at the mesoscale but fundamental questions persist regarding the mechanisms of cell encapsulation and mineral polymorphism. Here, we are the first to investigate and characterize precipitates on the microscale formed by MICP starting from single ureolytic E. coli MJK2 cells in 25 µm diameter drops. Mineral precipitation was observed over time and cells surrounded by calcium carbonate precipitates were observed under hydrated conditions. Using Raman microspectroscopy, amorphous calcium carbonate (ACC) was observed first in the drops, followed by vaterite formation. ACC and vaterite remained stable for up to 4 days, possibly due to the presence of organics. The vaterite precipitates exhibited a dense interior structure with a grainy exterior when examined using electron microscopy. Autofluorescence of these precipitates was observed possibly indicating the development of a calcite phase. The developed approach provides an avenue for future investigations surrounding fundamental processes such as precipitate nucleation on bacteria, microbe-mineral interactions, and polymorph transitions.

Non-stoichiometric hydrated magnesium-doped calcium carbonate precipitation in ethanol

2019 ◽  
Vol 55 (86) ◽  
pp. 12944-12947 ◽  
Author(s):  
Giulia Magnabosco ◽  
Andrea M. M. Condorelli ◽  
Rose Rosenberg ◽  
Iryna Polishchuk ◽  
Boaz Pokroy ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Crystallization Process ◽  
Ion Solvation ◽  
Absolute Ethanol ◽  
Carbonate Precipitation ◽  
Calcium Carbonate Precipitation

The effect of Mg2+ on the precipitation pathway of CaCO3 in absolute ethanol has been studied to investigate the role of ion solvation in the crystallization process.

scholarly journals Co-incorporation of alkali metal ions during amorphous calcium carbonate precipitation and their stabilizing effect

2019 ◽  
Vol 21 (24) ◽  
pp. 13230-13233 ◽  
Author(s):  
Anders C. S. Jensen ◽  
Henrik Birkedal ◽  
Luca Bertinetti
Keyword(s):  
Thermal Stability ◽  
Calcium Carbonate ◽  
Alkali Metal ◽  
Metal Ions ◽  
Alkali Metal Ions ◽  
Carbonate Precipitation ◽  
Amorphous Calcium Carbonate ◽  
Calcium Carbonate Precipitation ◽  
Stabilizing Effect

Alkali metal ions incorporate in amorphous calcium carbonate and affect its thermal stability.

Effect of Temperature on Calcium Carbonate Precipitation in Biomimetic Calcium Chloride Solution

2021 ◽  
Vol 107 ◽  
pp. 76-81
Author(s):  
Intan Nurfarzana Mohd Razib Fatheen ◽  
Che Husain Syuhani ◽  
Hamzah Fazlena ◽  
Najwa Mohd Rodhi Miradatul ◽  
Veny Harumi
Keyword(s):  
Calcium Carbonate ◽  
Calcium Chloride ◽  
Chloride Solution ◽  
Calcium Chloride Solution ◽  
Effect Of Temperature ◽  
Precipitation Process ◽  
Carbonate Precipitation ◽  
Calcium Carbonate Precipitation ◽  
Calcium Carbonate Precipitate ◽  
Temperature Range

In the present work, the effect of temperature on calcium carbonate precipitation in the biomimetic calcium chloride solution was investigated. A spontaneous calcium carbonate precipitate was formed in the biomimetic calcium chloride solution as a result of the carbon dioxide hydration process. The reaction was conducted at different temperature range vary from 30°C to 100°C. The mass of the calcium carbonate precipitate and the pH solution was measured in the study. The finding indicated that an increment of the temperature has led to the fast pH reduction of the solutions to 7.0. However, the process has retarded the calcium carbonate precipitation process. The optimum temperature for higher calcium carbonate precipitation has occurred at the temperature range of 47.5°C – 65°C which gave the highest calcium carbonate precipitate at 0.121g. The addition of Tris buffer into the calcium chloride solution in this study did not gave an inhibition effect on the calcium carbonate precipitate. Based on the results, an operating condition at 47.5°C – 65°C was recommended to be used in mineral carbonization of CO2 using the biomimetic calcium chloride solution.

scholarly journals A Numerical Model for Enzymatically Induced Calcium Carbonate Precipitation

2020 ◽  
Vol 10 (13) ◽  
pp. 4538 ◽  
Author(s):  
Johannes Hommel ◽  
Arda Akyel ◽  
Zachary Frieling ◽  
Adrienne J. Phillips ◽  
Robin Gerlach ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Numerical Model ◽  
Model Calibration ◽  
Column Experiments ◽  
Carbonate Precipitation ◽  
Carbonate Mineral ◽  
Calcium Carbonate Precipitation ◽  
Mineral Precipitation ◽  
Sporosarcina Pasteurii

Enzymatically induced calcium carbonate precipitation (EICP) is an emerging engineered mineralization method similar to others such as microbially induced calcium carbonate precipitation (MICP). EICP is advantageous compared to MICP as the enzyme is still active at conditions where microbes, e.g., Sporosarcina pasteurii, commonly used for MICP, cannot grow. Especially, EICP expands the applicability of ureolysis-induced calcium carbonate mineral precipitation to higher temperatures, enabling its use in leakage mitigation deeper in the subsurface than previously thought to be possible with MICP. A new conceptual and numerical model for EICP is presented. The model was calibrated and validated using quasi-1D column experiments designed to provide the necessary data for model calibration and can now be used to assess the potential of EICP applications for leakage mitigation and other subsurface modifications.

scholarly journals Utilization of Gaseous Carbon Dioxide and Industrial Ca-Rich Waste for Calcium Carbonate Precipitation: A Review

Energies ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 6239
Author(s):  
Natalia Czaplicka ◽  
Donata Konopacka-Łyskawa
Keyword(s):  
Carbon Dioxide ◽  
Calcium Carbonate ◽  
Precipitation Process ◽  
Steelmaking Slag ◽  
Carbonate Precipitation ◽  
Calcium Carbonate Precipitation ◽  
Waste Streams ◽  
Gaseous Carbon Dioxide ◽  
Implementation Problems ◽  
Available Information

Technologies for the management of various types of waste and the production of useful products from them are currently widely studied. Both carbon dioxide and calcium-rich waste from various production processes are problematic wastes that can be used to produce calcium carbonate. Therefore, the purpose of this paper is to provide an overview about the state of the development of processes that use these two wastes to obtain a valuable CaCO3 powder. The paper reviews the current research on the use of post-distillation liquid from the Solvay process, steelmaking slag, concrete, cement, and gypsum waste as well as some others industrial Ca-rich waste streams in the calcium carbonate precipitation process via carbonation route. This work is an attempt to collect the available information on the possibility of influencing the characteristics of the obtained calcium carbonate. It also indicates the possible limitations and implementation problems of the proposed technologies.

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