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Open AccessArticle

A Numerical Model for Enzymatically Induced Calcium Carbonate Precipitation

1
Department of Hydromechanics and Modelling of Hydrosystems, University of Stuttgart, Pfaffenwaldring 61, 70569 Stuttgart, Germany
2
Center for Biofilm Engineering, Montana State University, 366 Barnhard Hall, Bozeman, MT 59717, USA
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(13), 4538; https://doi.org/10.3390/app10134538
Received: 3 June 2020 / Revised: 23 June 2020 / Accepted: 24 June 2020 / Published: 30 June 2020
(This article belongs to the Special Issue Hydrologic and Water Resources Investigations and Modeling)
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. View Full-Text
Keywords: reactive transport; induced mineral precipitation; biomineralization; porosity and permeability reduction; leakage mitigation reactive transport; induced mineral precipitation; biomineralization; porosity and permeability reduction; leakage mitigation
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MDPI and ACS Style

Hommel, J.; Akyel, A.; Frieling, Z.; Phillips, A.J.; Gerlach, R.; Cunningham, A.B.; Class, H. A Numerical Model for Enzymatically Induced Calcium Carbonate Precipitation. Appl. Sci. 2020, 10, 4538.

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