An improved methodology to remove black crusts from stone by using Desulfovibrio vulgaris subsp. vulgaris ATCC 29579, a sulfate-reducing bacterium, is presented. The strain removed 98% of the sulfates of the crust in a 45-h treatment. Precipitation of black iron sulfide was avoided using filtration of a medium devoid of iron. Among three cell carriers, Carbogel proved to be superior to both sepiolite and Hydrobiogel-97, as it allowed an easy application of the bacteria, kept the system in a state where microbial activity was maintained, and allowed easy removal of the cells after the treatment.
|Digital Object Identifier (DOI):||10.1128/AEM.72.5.3733–3737.2006|
|Codice identificativo ISI:||WOS:000237491200080|
|Codice identificativo Scopus:||2-s2.0-33646679092|
|Appare nelle tipologie:||1.1 Articolo in rivista|