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Please use this identifier to cite or link to this item: http://hdl.handle.net/10481/7428

Title: Consolidation of degraded ornamental porous limestone stone by calcium carbonate precipitation induced by the microbiota inhabiting the stone
Authors: Jiménez-López, Concepción
Rodríguez-Navarro, Carlos
Piñar, Guadalupe
Carrillo-Rosúa, Javier
Rodríguez Gallego, Manuel
González-Muñoz, Teresa
Issue Date: 2007
Abstract: Although it has already been shown that calcareous stone can be consolidated by using a bacterially-inoculated culture media, a more user-friendly method is the in situ application of a sterile culture media that is able to activate, among the microbial community of the stone, those bacteria with a potential for calcium carbonate precipitation. In order to test this new method for stone consolidation, non-sterilized decayed porous limestone was immersed in sterile nutritional media. Results were compared to those of the runs in which stone sterilized prior to the treatment was used. The effects of the microbial community on stone consolidation were determined by recording the evolution of the culture media chemistry. The treated stones were tested for mechanical resistance and porosity. Results demonstrate that the tested media were able to activate bacteria from the microbial community of the stone. As a consequence of the growth of these bacteria, an alkalinization occurred that resulted in calcium carbonate precipitation. The new precipitate was compatible with the substrate and consolidated the stone without pore plugging. Therefore, a good candidate to in situ consolidate decayed porous limestone is the application of a sterile culture media with the characteristics specified in the present study.
Sponsorship: Proyectos MAT2005-03994, MAT2006-05411, CGL2004-03910 Grupo de Investigación de la Junta de Andalucía NMR 179, FQM 195 Departamento de Microbiología; Departamento de Mineralogía y Petrología (Universidad de Granada)
Publisher: Elsevier
Description: El artículo original ha sido publicado por Chemosphere, de la Editorial Elsevier, disponible en: http://www.elsevier.com/wps/find/journaldescription.cws_home/362/description#description http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V74-4NF2NCX-1&_user=654849&_coverDate=08%2F31%2F2007&_rdoc=1&_fmt=high&_orig=search&_origin=search&_sort=d&_docanchor=&view=c&_acct=C000035398&_version=1&_urlVersion=0&_userid=654849&md5=a44718f997b5057999cd6a5f100b7289&searchtype=a
Keywords: Bacterial biomineralization
Biomineralizaciones bacterianas
Stone conservation
Conservación de la piedra
Myxococcus xanthus
Calcium carbonate
Carbonato cálcico
URI: http://hdl.handle.net/10481/7428
ISSN: 0045-6535
Rights : Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License
Citation: Jimenez-Lopez, C., Rodriguez-Navarro, C., Piñar, G., Carrillo-Rosúa, J., Rodriguez-Gallego, M., & Gonzalez-Muñoz, M. T. (2007). Consolidation of degraded ornamental porous limestone stone by calcium carbonate precipitation induced by the microbiota inhabiting the stone. Chemosphere, 68(10), 1929-1936. doi:10.1016/j.chemosphere.2007.02.044
Appears in Collections:DDCE - Artículos

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