IN SITU PRECIPITATION OF CALCIUM CARBONATE (CACO3) BY INDIGENOUS MICROORGANISMS TO IMPROVE MECHANICAL PROPERTIES OF A GEOMATERIAL

A method for increasing the concentration of calcium carbonate in a geomaterial that contains indigenous microorganisms capable of hydrolyzing urea to ammonia, which method includes enriching the geomaterial with a source of nutrients, adding urea to the geomaterial which is hydrolyzed to ammonia an...

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Bibliographische Detailangaben
Hauptverfasser:	WEAVER, THOMAS, J, WILLIAMS, BARBARA, C, BURBANK, MALCOLM, B, CRAWFORD, RONALD, L
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ARTIFICIAL STONE BEER BIOCHEMISTRY CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE ENZYMOLOGY FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE LIME, MAGNESIA METALLURGY MICROBIOLOGY MUTATION OR GENETIC ENGINEERING REFRACTORIES SLAG SPIRITS TREATMENT OF NATURAL STONE VINEGAR WINE
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Beschreibung
Zusammenfassung:	A method for increasing the concentration of calcium carbonate in a geomaterial that contains indigenous microorganisms capable of hydrolyzing urea to ammonia, which method includes enriching the geomaterial with a source of nutrients, adding urea to the geomaterial which is hydrolyzed to ammonia and which raises the pH of the geomaterial, and adding a source of calcium ions to the geomaterial. Carbonate ions obtained by the hydrolysis of the urea combine with calcium ions to form calcium carbonate.