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\n\nFor the carbonate precipitation, the sample was put into a sample holder with three separate inlets: one for pressure measurement and two for separate injection of the urease solution (at 5 kg/m³) and the mineralization solution (containing calcium and urea at 333 mol/m³ concentrations each) and one outlet. The pressure was measured to monitor the progress of mineralization. Mineralization was carried out at 60°C to increase the reaction rates of urea hydrolysis and calcium carbonate precipitation. The reaction solutions were injected into the sample at a rate of 5 µl/s each using syringe pumps with a total volume of 5 ml, necessitating refilling of the syringes between injection periods. Mineralization was continued until the maximum pressure of 8 bar was reached. During the mineralization, the applied injection rates of both solutions and the measured pressure were recorded and are provided as *.csv file (\"Column3_mediumMineralization_20200128.csv\").
\n\nThe micro-XRCT scan shows the inlet section of the sample located at the top side of the glass beads column. Image stack counting from top to bottom.
\n\nBased on the reconstructed gray-values data set (\"reconstructed.tar.gz\"), a segmentation (\"segmentedPNGs.tar.gz\") into three phases was performed: glass beads, precipitated calcium carbonate, and pore space.
\n\nFor this, first, the software ilastik was used to get a distribution of the probabilities of identification of each voxel to those three phases, which were expressed as color values: red = glass beads, blue = precipitated calcium carbonate, and green = pore space.
\n\nIn a second step, based on the output by ilastik (\"probabilities.tar.gz\"), the software Matlab (see the Matlab script \"column3_postprocess.m\" in \"segmentedPNGs.tar.gz\") was used to finalize the segmentation assigning each voxel to a single-phase and to crop out an inner subvolume undisturbed by irregularities at the outer edges of the sample. The resulting binarized stacks of images of each of the phases are given: glass beads (\"segmentedPNGs.tar.gz\", subfolder \"red_sand\"), precipitated calcium carbonate (\"segmentedPNGs.tar.gz\", subfolder \"blue_precip\"), pore space (\"segmentedPNGs.tar. gz\", subfolder \"green_void\"), as well as precipitate and pore space representing the initial, unmineralized pore space, (\"segmentedPNGs.tar.gz\", subfolder \"precip_plus_void\"), in which white signifies the presence of the respective phase at the location and black absence of the respective phase."}}]},{"typeName":"subject","multiple":true,"typeClass":"controlledVocabulary","value":["Chemistry","Computer and Information Science","Earth and Environmental Sciences","Engineering"]},{"typeName":"keyword","multiple":true,"typeClass":"compound","value":[{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"Enzymatically Induced Calcium Carbonate Precipitation"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"Biomineralization"},"keywordVocabulary":{"typeName":"keywordVocabulary","multiple":false,"typeClass":"primitive","value":"Wikidata"},"keywordVocabularyURI":{"typeName":"keywordVocabularyURI","multiple":false,"typeClass":"primitive","value":"https://www.wikidata.org/wiki/Q610457"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"Porous Media"},"keywordVocabulary":{"typeName":"keywordVocabulary","multiple":false,"typeClass":"primitive","value":"Wikidata"},"keywordVocabularyURI":{"typeName":"keywordVocabularyURI","multiple":false,"typeClass":"primitive","value":"https://www.wikidata.org/wiki/Q3271208"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"micro X-ray Computed Tomography (micro-XRCT)"},"keywordVocabulary":{"typeName":"keywordVocabulary","multiple":false,"typeClass":"primitive","value":"Wikidata"},"keywordVocabularyURI":{"typeName":"keywordVocabularyURI","multiple":false,"typeClass":"primitive","value":"https://www.wikidata.org/wiki/Q3042540"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"X-ray Microtomography"},"keywordVocabulary":{"typeName":"keywordVocabulary","multiple":false,"typeClass":"primitive","value":"Wikidata"},"keywordVocabularyURI":{"typeName":"keywordVocabularyURI","multiple":false,"typeClass":"primitive","value":"https://www.wikidata.org/wiki/Q3042540"}}]},{"typeName":"publication","multiple":true,"typeClass":"compound","value":[{"publicationCitation":{"typeName":"publicationCitation","multiple":false,"typeClass":"primitive","value":"Gehring, L., Weinhardt, F., Ruf, M., Hommel, J. & Steeb, H. (2022). Effects of enzymatically induced carbonate precipitation on capillary pressure-saturation relations. Minerals, 12(10), 1186."},"publicationIDType":{"typeName":"publicationIDType","multiple":false,"typeClass":"controlledVocabulary","value":"doi"},"publicationIDNumber":{"typeName":"publicationIDNumber","multiple":false,"typeClass":"primitive","value":"10.3390/min12101186"},"publicationURL":{"typeName":"publicationURL","multiple":false,"typeClass":"primitive","value":"https://doi.org/10.3390/min12101186"}}]},{"typeName":"notesText","multiple":false,"typeClass":"primitive","value":"Ruf, M. and Hommel, J. contributed equally."},{"typeName":"language","multiple":true,"typeClass":"controlledVocabulary","value":["English"]},{"typeName":"producer","multiple":true,"typeClass":"compound","value":[{"producerName":{"typeName":"producerName","multiple":false,"typeClass":"primitive","value":"University of Stuttgart, Institute of Applied Mechanics (CE) - Chair for Continuum-Mechanics"},"producerURL":{"typeName":"producerURL","multiple":false,"typeClass":"primitive","value":"https://www.mib.uni-stuttgart.de/en"}},{"producerName":{"typeName":"producerName","multiple":false,"typeClass":"primitive","value":"University of Stuttgart - Cluster of Excellence EXC 2075 \"SimTech\""},"producerURL":{"typeName":"producerURL","multiple":false,"typeClass":"primitive","value":"https://www.simtech.uni-stuttgart.de"}}]},{"typeName":"productionDate","multiple":false,"typeClass":"primitive","value":"2020"},{"typeName":"productionPlace","multiple":true,"typeClass":"primitive","value":["University of Stuttgart, Institute of Applied Mechanics (CE), Stuttgart, 70569, Germany"]},{"typeName":"contributor","multiple":true,"typeClass":"compound","value":[{"contributorType":{"typeName":"contributorType","multiple":false,"typeClass":"controlledVocabulary","value":"Rights Holder"},"contributorName":{"typeName":"contributorName","multiple":false,"typeClass":"primitive","value":"Steeb, Holger"}}]},{"typeName":"grantNumber","multiple":true,"typeClass":"compound","value":[{"grantNumberAgency":{"typeName":"grantNumberAgency","multiple":false,"typeClass":"primitive","value":"DFG"},"grantNumberValue":{"typeName":"grantNumberValue","multiple":false,"typeClass":"primitive","value":"357361983"}},{"grantNumberAgency":{"typeName":"grantNumberAgency","multiple":false,"typeClass":"primitive","value":"DFG"},"grantNumberValue":{"typeName":"grantNumberValue","multiple":false,"typeClass":"primitive","value":"EXC 2075 - 390740016"}},{"grantNumberAgency":{"typeName":"grantNumberAgency","multiple":false,"typeClass":"primitive","value":"DFG"},"grantNumberValue":{"typeName":"grantNumberValue","multiple":false,"typeClass":"primitive","value":"SFB 1313 ‐ 327154368"}},{"grantNumberAgency":{"typeName":"grantNumberAgency","multiple":false,"typeClass":"primitive","value":"DFG"},"grantNumberValue":{"typeName":"grantNumberValue","multiple":false,"typeClass":"primitive","value":"380443677"}}]},{"typeName":"project","multiple":true,"typeClass":"compound","value":[{"projectName":{"typeName":"projectName","multiple":false,"typeClass":"primitive","value":"Seismic signature of hydraulic interconnectivity of fractures"}},{"projectName":{"typeName":"projectName","multiple":false,"typeClass":"primitive","value":"SFB 1313 - C04"}},{"projectName":{"typeName":"projectName","multiple":false,"typeClass":"primitive","value":"TWO-PHASE ICP 2: Process-specific relations describing the change of hydraulic porous-medium properties due to biogeochemical reaction"}}]},{"typeName":"kindOfData","multiple":true,"typeClass":"primitive","value":["Image data"]},{"typeName":"relatedDatasets","multiple":true,"typeClass":"primitive","value":["Hommel, J. & Weinhardt, F. (2022). Enzymatically induced carbonate precipitation and its effect on capillary pressure-saturation relations of porous media - microfluidics samples. DaRUS. https://doi.org/10.18419/darus-2791","
Hommel, J. & Gehring, L. (2022). Enzymatically induced carbonate precipitation and its effect on capillary pressure-saturation relations of porous media - column samples. DaRUS. https://doi.org/10.18419/darus-1713","
Ruf, M., Hommel, J. & Steeb, H. (2022). Enzymatically induced carbonate precipitation and its effect on capillary pressure-saturation relations of porous media - micro-XRCT dataset of high column (sample 4). DaRUS. https://doi.org/10.18419/darus-2907","
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