Anatase as an alternative application for preventing biodeterioration of mortars: evaluation and comparison with other biocides

Detalhes bibliográficos
Autor(a) principal: Macedo, Maria Filomena
Data de Publicação: 2010
Outros Autores: Fonseca, Ana Josina, Pina, Fernando, Leal, Nuno
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10362/4522
Resumo: International Biodeterioration & Biodegradation 64(2010)388 e 396
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spelling Anatase as an alternative application for preventing biodeterioration of mortars: evaluation and comparison with other biocidesBiodeteriorationMortarsPhotocatalysisAnataseBiocidesInternational Biodeterioration & Biodegradation 64(2010)388 e 396The aim of this study is the comparison between different treatments(anatase and two conventional biocides:Biotin T and Anios)for preventing biodeterioration of mortars.The treatments were applied both in the laboratory on mortar slabs and in situ on walls of Palácio Nacional da Pena(Sintra,Portugal). Mortar slabs treated with anatase (pure and Fe3þ doped)applied as acoating or by mixing within the mortar were prepared,and their surfaces characterized by different methodologies.The mortars were inoculated with cyanobacteria and chlorophyta species,incubated for a period of 4 months and the chlorophyll content quantified by extraction method and fluorescence emission.For comparison purposes untreated mortar slabs were inoculated,incubated and finally treated with the biocides.After two weeks the respective chlorophyll contents was quantified. In situ studies in two external walls of Palácio Nacional da Pena covered by organisms were also performed by direct application of aqueous solutions of the three products,and the efficiency of the treatment monitored by spectrophotometry using the CIELAB method.Lichens and other phototrophic microorganisms were identified by direct observation with a microscope and cyanobacteria,green microalgae, bacteria and fungi by DNA-based molecular analysis targeting the 16S and 18S ribosomal RNAgenes. The results show that anatase is a better agent for preventing biodeterioration than the two tested conventional biocides,both in mortars slabsand in situ studies.In fact,photographic and colorimetric records made in two external walls of Palácio Nacional da Pena after two weeks of treatments application showed that lichens and other phototrophic microorganisms disappear from the places where anatase was applied.Elsevier Ltd.RUNMacedo, Maria FilomenaFonseca, Ana JosinaPina, FernandoLeal, Nuno2010-12-14T15:50:44Z20102010-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10362/4522eng0964-8305info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-03-11T03:34:23Zoai:run.unl.pt:10362/4522Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:15:46.052585Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Anatase as an alternative application for preventing biodeterioration of mortars: evaluation and comparison with other biocides
title Anatase as an alternative application for preventing biodeterioration of mortars: evaluation and comparison with other biocides
spellingShingle Anatase as an alternative application for preventing biodeterioration of mortars: evaluation and comparison with other biocides
Macedo, Maria Filomena
Biodeterioration
Mortars
Photocatalysis
Anatase
Biocides
title_short Anatase as an alternative application for preventing biodeterioration of mortars: evaluation and comparison with other biocides
title_full Anatase as an alternative application for preventing biodeterioration of mortars: evaluation and comparison with other biocides
title_fullStr Anatase as an alternative application for preventing biodeterioration of mortars: evaluation and comparison with other biocides
title_full_unstemmed Anatase as an alternative application for preventing biodeterioration of mortars: evaluation and comparison with other biocides
title_sort Anatase as an alternative application for preventing biodeterioration of mortars: evaluation and comparison with other biocides
author Macedo, Maria Filomena
author_facet Macedo, Maria Filomena
Fonseca, Ana Josina
Pina, Fernando
Leal, Nuno
author_role author
author2 Fonseca, Ana Josina
Pina, Fernando
Leal, Nuno
author2_role author
author
author
dc.contributor.none.fl_str_mv RUN
dc.contributor.author.fl_str_mv Macedo, Maria Filomena
Fonseca, Ana Josina
Pina, Fernando
Leal, Nuno
dc.subject.por.fl_str_mv Biodeterioration
Mortars
Photocatalysis
Anatase
Biocides
topic Biodeterioration
Mortars
Photocatalysis
Anatase
Biocides
description International Biodeterioration & Biodegradation 64(2010)388 e 396
publishDate 2010
dc.date.none.fl_str_mv 2010-12-14T15:50:44Z
2010
2010-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10362/4522
url http://hdl.handle.net/10362/4522
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0964-8305
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier Ltd.
publisher.none.fl_str_mv Elsevier Ltd.
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
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reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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