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Erschienen in: Environmental Earth Sciences 2/2018

01.01.2018 | Thematic Issue

Efficacy of laser cleaning in the removal of biological patina on the volcanic scoria of the rock-hewn churches of Lalibela, Ethiopia

verfasst von: Blen Taye Gemeda, Ruth Lahoz, Ana Teresa Caldeira, Nick Schiavon

Erschienen in: Environmental Earth Sciences | Ausgabe 2/2018

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Abstract

The Lalibela rock-hewn churches are one of the most important religious pilgrimage sites in Ethiopia. These churches are carved from the scoriaceous basalt rock substrate, which has been exposed to attack by biological agents with significant loss of surface material. Particularly, the widespread growth of lichens and other microorganisms on the carved surfaces of the churches has proven to represent a substantial threat for the preservation of the site. In this study, laboratory tests have been conducted to assess the feasibility of using laser technology as an efficient cleaning method of biological patina from polymineralic stone substrates. Multi-analytical techniques were applied for the characterization of the stone samples collected from two of the Lalibela churches: Bete Giyorgis and Bete Amanuel. Stone samples artificially inoculated with bacteria, yeast, fungi isolates, and lichen-encrusted samples were laser cleaned using UV and IR laser wavelengths. The high content of Fe and Ti oxides and the high porosity have made the stone surfaces easily susceptible to low-energy laser treatment. Results indicate that laser cleaning can be applied to polymineralic lithotypes and UV irradiation can successfully remove lichen colonies. Further studies need to be conducted to optimize the laser procedure in polymineralic, high porosity stones.

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Literatur
Zurück zum Zitat Aalund F (1985) Ethiopia - master plan for the preservationand presentation of cultural heritage - operational action for the safeguarding of the immovable cultural heritage and its reintegration into modern life. UNESCO Technical Report RP/1984:1985/Xl.1.4 Aalund F (1985) Ethiopia - master plan for the preservationand presentation of cultural heritage - operational action for the safeguarding of the immovable cultural heritage and its reintegration into modern life. UNESCO Technical Report RP/1984:1985/Xl.1.4
Zurück zum Zitat Asrat A (2002) The rock-hewn churches of Tigrai, Northern Ethiopia: a geological perspective. Geoarchaeolgoy 17(7):649–663CrossRef Asrat A (2002) The rock-hewn churches of Tigrai, Northern Ethiopia: a geological perspective. Geoarchaeolgoy 17(7):649–663CrossRef
Zurück zum Zitat Asrat A, Ayallew Y (2011) Geological and geotechnical properties of the medieval rock hewn churches of Lalibela Northern Ethiopia. J Afr Earth Sci 59(1):61–73CrossRef Asrat A, Ayallew Y (2011) Geological and geotechnical properties of the medieval rock hewn churches of Lalibela Northern Ethiopia. J Afr Earth Sci 59(1):61–73CrossRef
Zurück zum Zitat Bartoli L, Pouli P, Fotakis C, Siano S, Salimbeni R (2006) Characterization of stone cleaning by Nd:YAG lasers with different pulse duration. Laser Chem 2006:6CrossRef Bartoli L, Pouli P, Fotakis C, Siano S, Salimbeni R (2006) Characterization of stone cleaning by Nd:YAG lasers with different pulse duration. Laser Chem 2006:6CrossRef
Zurück zum Zitat Bartoli F, Casanova MA, Fuagai Y, Kashiwadani H, Moon KH, Caneva G (2014) Biological colonization patterns on the ruins of Angkor temples (Cambodia) in the biodeterioration vs bioprotection debate. Int Biodeterior Biodegrad 96:157–165CrossRef Bartoli F, Casanova MA, Fuagai Y, Kashiwadani H, Moon KH, Caneva G (2014) Biological colonization patterns on the ruins of Angkor temples (Cambodia) in the biodeterioration vs bioprotection debate. Int Biodeterior Biodegrad 96:157–165CrossRef
Zurück zum Zitat Chen J, Blume HP, Beyer L (2000) Weathering of rocks induced by lichen colonization: a review. CATENA 39:121–146CrossRef Chen J, Blume HP, Beyer L (2000) Weathering of rocks induced by lichen colonization: a review. CATENA 39:121–146CrossRef
Zurück zum Zitat Cooper M (2014) Laser cleaning of sculpture, monuments and architectural detail. J Archit Conserv 11(3):105–119CrossRef Cooper M (2014) Laser cleaning of sculpture, monuments and architectural detail. J Archit Conserv 11(3):105–119CrossRef
Zurück zum Zitat Cooper MI, Emmony DC, Larson J (1995) Characterization of laser cleaning of limestone. Opt Laser Technol 27(1):69–73CrossRef Cooper MI, Emmony DC, Larson J (1995) Characterization of laser cleaning of limestone. Opt Laser Technol 27(1):69–73CrossRef
Zurück zum Zitat Cuzman OA, Faraloni C, Pinna D, Riminesi C, Saccchi B, Tiano P, Torzillo G (2013) Evaluation of treatments efficiency against lichens growing on monumental stones by electrical conductivity. Int Biodeterior Biodegrad 84:314–321CrossRef Cuzman OA, Faraloni C, Pinna D, Riminesi C, Saccchi B, Tiano P, Torzillo G (2013) Evaluation of treatments efficiency against lichens growing on monumental stones by electrical conductivity. Int Biodeterior Biodegrad 84:314–321CrossRef
Zurück zum Zitat DeCruz A, Wolbarsht ML, Palmer RA, Pierce SE, Adamkiewicz E (2005) Er:YAG laser applications on marble and limestone sculptures with polychrome and patina surfaces. In: Laser in the conservation of artworks, LACONA V proceedings, part III, pp 113–124 DeCruz A, Wolbarsht ML, Palmer RA, Pierce SE, Adamkiewicz E (2005) Er:YAG laser applications on marble and limestone sculptures with polychrome and patina surfaces. In: Laser in the conservation of artworks, LACONA V proceedings, part III, pp 113–124
Zurück zum Zitat De Cruz A, Wolbarsht ML, Andreotti A, Colombini MP (2009) Investigation of the Er:YAG Laser at 2.94 μm to remove lichens growing on stone. Stud Conserv 54(4):268–277CrossRef De Cruz A, Wolbarsht ML, Andreotti A, Colombini MP (2009) Investigation of the Er:YAG Laser at 2.94 μm to remove lichens growing on stone. Stud Conserv 54(4):268–277CrossRef
Zurück zum Zitat Delmonaco G, Margottini C, Spizzichino D (2005) Slope-structure stability modeling for the rock-hewn church of Bet Aba Libanos in Lalibela (Ethiopia): preliminary results. In: Sassa K, Fukuoka H, Wang F, Wang G (eds) Landslides: risk analysis and sustainable disaster management. Springer, Berlin, pp 213–218 Delmonaco G, Margottini C, Spizzichino D (2005) Slope-structure stability modeling for the rock-hewn church of Bet Aba Libanos in Lalibela (Ethiopia): preliminary results. In: Sassa K, Fukuoka H, Wang F, Wang G (eds) Landslides: risk analysis and sustainable disaster management. Springer, Berlin, pp 213–218
Zurück zum Zitat Delmonaco G, Margottini C, Spizzichino D (2009) Analysis of rock weathering and conservation strategies for rock-hewn churches of Lalibela (Ethiopia). In: Mazzolani FM (ed) Protection of historical buildings. CRC Press, Taylor & Francis Group, London, pp 137–142 Delmonaco G, Margottini C, Spizzichino D (2009) Analysis of rock weathering and conservation strategies for rock-hewn churches of Lalibela (Ethiopia). In: Mazzolani FM (ed) Protection of historical buildings. CRC Press, Taylor & Francis Group, London, pp 137–142
Zurück zum Zitat Grossi CM, Benavente D (2016) Color changes by laser irradiation of reddish building limestones. Appl Surf Sci 384:525–529CrossRef Grossi CM, Benavente D (2016) Color changes by laser irradiation of reddish building limestones. Appl Surf Sci 384:525–529CrossRef
Zurück zum Zitat Grossi MC, Alonso FJ, Esbert RM, Rojo A (2006) Effect of laser cleaning on granite color. Appl Surf Sci 346:248–255 Grossi MC, Alonso FJ, Esbert RM, Rojo A (2006) Effect of laser cleaning on granite color. Appl Surf Sci 346:248–255
Zurück zum Zitat Kiros A, Lazic V, Gigante GE, Gholap AV (2012) Analysis of rock samples collected from rock hewn churches of Lalibela Ethiopia using laser-induced breakdown spectroscopy. J Archaeol Sci 40(5):2570–2578CrossRef Kiros A, Lazic V, Gigante GE, Gholap AV (2012) Analysis of rock samples collected from rock hewn churches of Lalibela Ethiopia using laser-induced breakdown spectroscopy. J Archaeol Sci 40(5):2570–2578CrossRef
Zurück zum Zitat Kiros A, Gholap AV, Gigante GE (2013) Fourier transform infrared spectroscopic characterization of clay minerals from rocks of Lalibela churches, Ethiopia. Int J Phys Sci 8(3):109–119CrossRef Kiros A, Gholap AV, Gigante GE (2013) Fourier transform infrared spectroscopic characterization of clay minerals from rocks of Lalibela churches, Ethiopia. Int J Phys Sci 8(3):109–119CrossRef
Zurück zum Zitat Laboure M, Bromblet P, Orial G, Wiedemann G, Simon-Boisson C (2000) Assessment of laser cleaning rate on limestones and sandstones. J Cult Herit 1:21–27CrossRef Laboure M, Bromblet P, Orial G, Wiedemann G, Simon-Boisson C (2000) Assessment of laser cleaning rate on limestones and sandstones. J Cult Herit 1:21–27CrossRef
Zurück zum Zitat Lahoz R (2006) Ablación Laser de Materiales Inorgánicos y Metálicos. Ph.d thesis, University of Zaragoza, Spain Lahoz R (2006) Ablación Laser de Materiales Inorgánicos y Metálicos. Ph.d thesis, University of Zaragoza, Spain
Zurück zum Zitat Lanterna G, Matteini M (2000) Laser cleaning of stone artefacts: a substitute or alternative method? J Cult Herit 1(1):S29–S35CrossRef Lanterna G, Matteini M (2000) Laser cleaning of stone artefacts: a substitute or alternative method? J Cult Herit 1(1):S29–S35CrossRef
Zurück zum Zitat Lopez AJ, Lamas J, Ramil A, Yáñez A, Rivas T, Taboada J (2011) Optimization of laser cleaning for the removal of biological black crusts in granites. Appl Phys A 100(3):733–739CrossRef Lopez AJ, Lamas J, Ramil A, Yáñez A, Rivas T, Taboada J (2011) Optimization of laser cleaning for the removal of biological black crusts in granites. Appl Phys A 100(3):733–739CrossRef
Zurück zum Zitat Marakis G, Maravelaki P, Zafiropulosa V, Klein S, Hildenhagen J, Dickmann K (2000) Investigations on cleaning of black crusted sandstone using different UV-pulsed lasers. J Cult Herit 1(1):S61–S64CrossRef Marakis G, Maravelaki P, Zafiropulosa V, Klein S, Hildenhagen J, Dickmann K (2000) Investigations on cleaning of black crusted sandstone using different UV-pulsed lasers. J Cult Herit 1(1):S61–S64CrossRef
Zurück zum Zitat Marakis G et al (2003) Comparative study on the application of the 1st and the 3rd harmonic. J Cult Herit 4(1):83–91CrossRef Marakis G et al (2003) Comparative study on the application of the 1st and the 3rd harmonic. J Cult Herit 4(1):83–91CrossRef
Zurück zum Zitat Mosmann T (1983) Rapid Colorimetric assay for cellular growth and survival: application to proliferation and cytotoxicity assays. J Immunol Methods 65(1–2):55–63CrossRef Mosmann T (1983) Rapid Colorimetric assay for cellular growth and survival: application to proliferation and cytotoxicity assays. J Immunol Methods 65(1–2):55–63CrossRef
Zurück zum Zitat Pouli P, Fotakis C, Hermosin B, Saiz-Jimenez C, Domingo C, Oujja M, Castillejo M (2008) The laser-induced discoloration of stonework; a comparative study on its origins and remedies. Spectrochim Acta Part A Mol Biomol Spectrosc 71(3):932–945CrossRef Pouli P, Fotakis C, Hermosin B, Saiz-Jimenez C, Domingo C, Oujja M, Castillejo M (2008) The laser-induced discoloration of stonework; a comparative study on its origins and remedies. Spectrochim Acta Part A Mol Biomol Spectrosc 71(3):932–945CrossRef
Zurück zum Zitat Pozo-Antonio JS, Ramil A, Riva T, Lopez AJ, Fiorucci MP (2016a) Effectiveness of chemical, mechanical and laser cleaning methods of sulphated black crusts developed on granite. Constr Build Mater 112(2016):682–690CrossRef Pozo-Antonio JS, Ramil A, Riva T, Lopez AJ, Fiorucci MP (2016a) Effectiveness of chemical, mechanical and laser cleaning methods of sulphated black crusts developed on granite. Constr Build Mater 112(2016):682–690CrossRef
Zurück zum Zitat Pozo-Antonio JS, Rivas T, Fiorucci MP, Lopez AJ, Ramil A (2016b) Effectiveness and harmfulness evaluation of graffiti cleaning by mechanical, chemical and laser procedures on granite. Microchem J 125:1–9CrossRef Pozo-Antonio JS, Rivas T, Fiorucci MP, Lopez AJ, Ramil A (2016b) Effectiveness and harmfulness evaluation of graffiti cleaning by mechanical, chemical and laser procedures on granite. Microchem J 125:1–9CrossRef
Zurück zum Zitat Renzulli A, Antonelli F, Margottini C, Santi P, Fratini F (2011) What kind of volcanite rock-hewn churches of the Lalibela UNESCO’s world heritage site are made of? J Cult Herit 12(2):227–235CrossRef Renzulli A, Antonelli F, Margottini C, Santi P, Fratini F (2011) What kind of volcanite rock-hewn churches of the Lalibela UNESCO’s world heritage site are made of? J Cult Herit 12(2):227–235CrossRef
Zurück zum Zitat Rosado T, Reis A, Mirão J, Candeias A, Vandenabeele P, Caldeira AT (2014) Pink! Why not? On the unusual color of Évora Cathedral. Int Biodeterior Biodegrad 94:121–127CrossRef Rosado T, Reis A, Mirão J, Candeias A, Vandenabeele P, Caldeira AT (2014) Pink! Why not? On the unusual color of Évora Cathedral. Int Biodeterior Biodegrad 94:121–127CrossRef
Zurück zum Zitat Sabatini G, Giamello M, Pini R, Siano S, Salimbeni R (2000) Laser cleaning methodologies for stone facades and monuments: laboratory analyses on lithotypes of Siena architecture. J Cult Herit 1(1):S9–S19CrossRef Sabatini G, Giamello M, Pini R, Siano S, Salimbeni R (2000) Laser cleaning methodologies for stone facades and monuments: laboratory analyses on lithotypes of Siena architecture. J Cult Herit 1(1):S9–S19CrossRef
Zurück zum Zitat Salimbeni R, Pini R, Siano S, Calcagno G (2000) Assessment of the state of conservation of stone artworks after laser cleaning: comparison with conventional cleaning results on a two-decade follow up. J Cult Herit 1(4):385–391CrossRef Salimbeni R, Pini R, Siano S, Calcagno G (2000) Assessment of the state of conservation of stone artworks after laser cleaning: comparison with conventional cleaning results on a two-decade follow up. J Cult Herit 1(4):385–391CrossRef
Zurück zum Zitat Sani F, Moratti G, Coli M, Laureano P, Rovero L, Tonietti U, Coli N (2012) Integrated geological-architectural pilot study of the Biet Gabriel-Rufael rock hewn church in Lalibela, Northern Ethiopia. J Geosci 131(2):171–186 Sani F, Moratti G, Coli M, Laureano P, Rovero L, Tonietti U, Coli N (2012) Integrated geological-architectural pilot study of the Biet Gabriel-Rufael rock hewn church in Lalibela, Northern Ethiopia. J Geosci 131(2):171–186
Zurück zum Zitat Sanz M, Oujja M, Ascaso C, de Los Rios A, Perez-Ortega S, Souza-Egipsy V, Wierzchos J, Speranza M, Canamares MV, Castillejo M (2015) Infrared and ultraviolet laser removal of crustose lichens on dolomite heritage stone. Appl Surf Sci 346:248–255CrossRef Sanz M, Oujja M, Ascaso C, de Los Rios A, Perez-Ortega S, Souza-Egipsy V, Wierzchos J, Speranza M, Canamares MV, Castillejo M (2015) Infrared and ultraviolet laser removal of crustose lichens on dolomite heritage stone. Appl Surf Sci 346:248–255CrossRef
Zurück zum Zitat Schiavon N (2002) Biodeterioration of calcareous and granitic building stones in urban environments. In: Siegesmund S, Weiss T, Vollbrecht VA (eds) Natural stone, weathering phenomena, conservation strategies and case studies, vol 205. Geological Society of London Special Publication, London, pp 195–206. https://doi.org/10.1144/gsl.sp.2002.205.01.15 Schiavon N (2002) Biodeterioration of calcareous and granitic building stones in urban environments. In: Siegesmund S, Weiss T, Vollbrecht VA (eds) Natural stone, weathering phenomena, conservation strategies and case studies, vol 205. Geological Society of London Special Publication, London, pp 195–206. https://​doi.​org/​10.​1144/​gsl.​sp.​2002.​205.​01.​15
Zurück zum Zitat Schiavon N, De Caro T, Kiros A, Caldeira AT, Parisi IE, Riccucci C, Gigante GE (2013) A multianalytical approach to investigate stone biodeterioration at a UNESCO world heritage site: the volcanic rock-hewn churches of Lalibela, Norther Ethiopia. J Appl Phys A 113(4):843–854CrossRef Schiavon N, De Caro T, Kiros A, Caldeira AT, Parisi IE, Riccucci C, Gigante GE (2013) A multianalytical approach to investigate stone biodeterioration at a UNESCO world heritage site: the volcanic rock-hewn churches of Lalibela, Norther Ethiopia. J Appl Phys A 113(4):843–854CrossRef
Zurück zum Zitat Speranza M, Sanz M, Oujja M, Rios A, Wierzchos J, Perez-Ortega SM, Castillejo M, Ascaso C (2011) Nd-YAG laser irradiation damages to Verrucaria nigrescens. Int Biodeterior Biodegrad 84:281–290CrossRef Speranza M, Sanz M, Oujja M, Rios A, Wierzchos J, Perez-Ortega SM, Castillejo M, Ascaso C (2011) Nd-YAG laser irradiation damages to Verrucaria nigrescens. Int Biodeterior Biodegrad 84:281–290CrossRef
Zurück zum Zitat Steel AJ (2016) Conservation of the rock hewn churches of Lalibela: a set of notes for guidance of conservators and architects, report ARCCH Steel AJ (2016) Conservation of the rock hewn churches of Lalibela: a set of notes for guidance of conservators and architects, report ARCCH
Zurück zum Zitat Sterflinger K (2010) Fungi: their role in deterioration of cultural heritage. Fungal Biol Rev 24(1–2):47–55CrossRef Sterflinger K (2010) Fungi: their role in deterioration of cultural heritage. Fungal Biol Rev 24(1–2):47–55CrossRef
Zurück zum Zitat Wiktor V, De Leo F, Urzi C, Guyonnet R, Grosseau P, Garcia-Diaz E (2009) Accelerated laboratory test to study fungal biodeterioration of cementitious matrix. Intenat Biodeterior Biodegrad 63:1061–1065CrossRef Wiktor V, De Leo F, Urzi C, Guyonnet R, Grosseau P, Garcia-Diaz E (2009) Accelerated laboratory test to study fungal biodeterioration of cementitious matrix. Intenat Biodeterior Biodegrad 63:1061–1065CrossRef
Zurück zum Zitat Zhang J et al (2008) Mechanism and prediction of laser wet cleaning of marble encrustation. J Manuf Sci Eng 130(3):9 Zhang J et al (2008) Mechanism and prediction of laser wet cleaning of marble encrustation. J Manuf Sci Eng 130(3):9
Metadaten
Titel
Efficacy of laser cleaning in the removal of biological patina on the volcanic scoria of the rock-hewn churches of Lalibela, Ethiopia
verfasst von
Blen Taye Gemeda
Ruth Lahoz
Ana Teresa Caldeira
Nick Schiavon
Publikationsdatum
01.01.2018
Verlag
Springer Berlin Heidelberg
Erschienen in
Environmental Earth Sciences / Ausgabe 2/2018
Print ISSN: 1866-6280
Elektronische ISSN: 1866-6299
DOI
https://doi.org/10.1007/s12665-017-7223-3

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