Advantages of using microbial technology over traditional chemical technology in the removal of black crusts from stone surfaces of historical monuments
Articolo
Data di Pubblicazione:
2007
Citazione:
Advantages of using microbial technology over traditional chemical technology in the removal of black crusts from stone surfaces of historical monuments / F. Cappitelli, L. Toniolo, A. Sansonetti, D. Gulotta, G. Ranalli, E. Zanardini, C. Sorlini. - In: APPLIED AND ENVIRONMENTAL MICROBIOLOGY. - ISSN 0099-2240. - 73:17(2007), pp. 5671-5675. [10.1128/AEM.00394-07]
Abstract:
This study compares two cleaning methods, one involving an ammonium carbonate-EDTA mixture and
the other involving the sulfate-reducing bacterium Desulfovibrio vulgaris subsp. vulgaris ATCC 29579, for the
removal of black crust (containing gypsum) on marble of the Milan Cathedral (Italy). In contrast to the
chemical cleaning method, the biological procedure resulted in more homogeneous removal of the surface
deposits and preserved the patina noble under the black crust. Whereas both of the treatments converted
gypsum to calcite, allowing consolidation, the chemical treatment also formed undesirable sodium sulfate.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
F. Cappitelli, L. Toniolo, A. Sansonetti, D. Gulotta, G. Ranalli, E. Zanardini, C. Sorlini
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