Service Communautaire d'Information sur la Recherche et le Développement - CORDIS

FP5

BIOBRUSH Résumé de rapport

Project ID: EVK4-CT-2001-00055
Financé au titre de: FP5-EESD
Pays: United Kingdom

Stone sample information sheets

STONE INFORMATION STUDY SHEETS create an extensive database of information about stones showing crust and salt accumulation in buildings of cultural heritage in different climatic zones.

INFORMATION DATABASE OF STONES SUITABLE FOR BIOREMEDIATION COVERS:
Stones from 13 monuments, mainly in Latvia, Greece and Italy;
22 natural stones;
Site accessibility and availability;
Mineralogical profiles of crusted stone;
Analysis of physical properties beneath crusts;
Chemical composition of crusts;
Microbiological analysis;
Climate and pollution data.

CRUST ANALYSIS
For physical properties: remarkable shifts towards greater porosity within the weathered uppermost layers of the rocks and plaster, which are ideal for bioremedial techniques.

For chemical composition: Sulphates were often present in a narrow 40 mm surface zone of stone blocks. Considerable amounts of sulphate in stone from Matera Cathedral, Riga Brethrens cemetery, Lübeck townhall and Melos. Concentrations at Matera are much more variable than nitrate.

Nitrates formed a much more limited gradient on the surface zones. Could only be detected at Matera Cathedral and Riga Brethrens cemetery.

For salt concentrations: great variability, can cause major difficulties in bioremediation treatments.

For organic pollutants: very low levels, not suited to bioremediation by use of organic degraders.

Contact

Eric MAY, (Reader in Microbiology)
Tél.: +44-2392-842025
Fax: +44-2392-842070
E-mail