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Biomineralization Consolidation of Fresco Wall Paintings Samples by Bacillus sphaericus
- Source :
- Geomicrobiology Journal. 33:625-629
- Publication Year :
- 2016
- Publisher :
- Informa UK Limited, 2016.
-
Abstract
- Bacterial-induced mineralization has been explored for protection and consolidation of degraded limestone, concrete and plaster by precipitation of calcium carbonate. It is the first time that Bacillus sphaericus was used for consolidating the nonsterilized decayed wall paintings samples by immersing them in sterile nutritional media. The B. sphaericus used in this study produced urease, which catalyzes the hydrolysis of urea (CO(NH2)2) into ammonium (NH4) and carbonate (CO3−2) leading to the precipitation of calcium carbonate. The effect of B. sphaericus on wall paintings was determined by recording the evolution of culture media chemistry and examining the treated wall paintings under a scanning electron microscope to show the structural and morphological evolution of calcium carbonate that was investigated in wall paintings models.
- Subjects :
- 0301 basic medicine
Urease
030106 microbiology
Mineralogy
010501 environmental sciences
01 natural sciences
Microbiology
Bacillus sphaericus
03 medical and health sciences
Hydrolysis
chemistry.chemical_compound
Earth and Planetary Sciences (miscellaneous)
Environmental Chemistry
Ammonium
0105 earth and related environmental sciences
General Environmental Science
biology
fungi
biology.organism_classification
Calcium carbonate
chemistry
Urea
biology.protein
Carbonate
Biomineralization
Nuclear chemistry
Subjects
Details
- ISSN :
- 15210529 and 01490451
- Volume :
- 33
- Database :
- OpenAIRE
- Journal :
- Geomicrobiology Journal
- Accession number :
- edsair.doi...........3fbbd113e439246861a58727964a58f5