Effect of biological colonization on ceramic roofing tiles by lichens and a combined laser and biocide procedure for its removal

Peña-Poza, Javier; Ascaso, Carmen; Sanz, Mikel; Pérez‐Ortega, Sergio; Oujja, M.; Wierzchos, Jacek; Souza-Egipsy, Virginia; Cañamares, María Vega; Urizal, Marta; Castillejo, Marta; Garcı́a-Heras, Manuel

doi:10.1016/j.ibiod.2017.10.003

Cited by 22 publications

(12 citation statements)

References 28 publications

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“…Biocidal products can be applied on roofs to fight stains, mold and algae, and to prevent lichen proliferation. Commercial formulations contain different active substances as quaternary ammonium compounds (QAC), isothiazolinones (dichlo-octylisothiazolinone and octylisothiazolinone) and terbutryn (Van de Voorde 2012; Gromaire et al 2015;Pena-Poza 2018). According to Van de Voorde (2012), most of the de-mossing formulations for roofs available on the French market contain quaternary ammonium compounds, in particular benzalkonium (alkyldimethylbenzylammonium).…”

Section: Post-treatment Of Tilesmentioning

confidence: 99%

Biocide emissions from building materials during wet weather: identification of substances, mechanism of release and transfer to the aquatic environment

Paijens

Bressy

Frère

et al. 2019

Environ Sci Pollut Res

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Biocides are added to or applied on building materials to prevent microorganisms from growing on their surface or to treat them. They are leached into building runoff and contribute to diffuse contamination of receiving waters. This review aimed at summarizing the current state of knowledge concerning the impact of biocides from buildings on the aquatic environment. The objectives were (i) to assess the key parameters influencing the leaching of biocides and to quantify their emission from buildings; (ii) to determine the different pathways from urban sources into receiving waters; and (iii) to assess the associated environmental risk. Based on consumption data and leaching studies, a list of substances to monitor in receiving water was established. Literature review of their concentrations in the urban water cycle showed evidences of contamination and risk for aquatic life, which should put them into consideration for inclusion to European or international monitoring programs. However, some biocide concentration data in urban and receiving waters is still missing to fully assess their environmental risk, especially for isothiazolinones, iodopropynyl carbamate, zinc pyrithione and quaternary ammonium compounds, and little is known about their transformation products. Although some models supported by actual data were developed to extrapolate emissions on larger scales (watershed or city scales), they are not sufficient to prioritize the pathways of biocides from urban sources into receiving waters during both dry and wet weathers. Our review highlights the need to reduce emissions and limit their transfer into rivers, and reports several solutions to address these issues.

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Section: Post-treatment Of Tilesmentioning

confidence: 99%

Biocide emissions from building materials during wet weather: identification of substances, mechanism of release and transfer to the aquatic environment

Paijens

Bressy

Frère

et al. 2019

Environ Sci Pollut Res

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“…Additionally, the combination of laser and mechanical cleaning satisfactorily removed the darker lichen Pertusaria amara compared to the lighter Pertusaria pseudocorallina . The sequential use of laser irradiation and chemical treatment led to a complete damage of both photobiont and mycobiont cells, with no viability of the remaining lichen structures due to the chemical treatment [ 109 ].…”

Section: Combination Of Control Methodsmentioning

confidence: 99%

The Control of Cultural Heritage Microbial Deterioration

2020

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The microbial deterioration of cultural heritage includes physical and chemical damage as well as aesthetic alteration. With the technological advancement, a plethora of techniques for removing unwanted microorganisms have opened up new opportunities for microbiologists and conservators. This article reviews the most applied, up-to-date, and sustainable techniques developed for the control of cultural heritage microbial deterioration presenting noteworthy case studies. These techniques include chemical methods, i.e., traditional biocides and nanoparticles; physical methods, such as mechanical removal, UV irradiation, gamma radiation, laser cleaning, heat shocking, microwaves, and dry ice treatment; and biological methods, such as natural molecules with biocidal activity, enzymes, and microorganisms. The application of control systems requires the comprehension of their behavior toward the unwanted microorganisms and possible interactions with the heritage materials. This overview shows also the control methods drawbacks for the purpose of creating awareness in selecting the most suitable technique or combination of techniques.

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“…Tres especies liquénicas presentes en sustratos cerámicos, en los que se había determinado la composición química y mineralógica, se irradiaron con láser a 1064 y 266 nm y, a continuación, se aplicó el biocida Acticide® CF (Thor Especialidades SA). La composición química de los materiales cerámicos se reveló como importante en la colonización biológica del sustrato y la aplicación del láser de forma combinada con el biocida mostró resultados de los que se deduce que se producen daños significativos en ambos simbiontes del liquen (Pena-Poza et al 2018).…”

Section: Publicaciones Destacadas De Los úLtimos 5 Añosunclassified

“…En el transcurso de nuestras investigaciones sobre la efectividad a medio plazo del biocida Acti-cide® CF, nos planteamos evaluar la eficacia de los tratamientos tras dos años de la aplicación. Se trataron talos del liquen Protoparmeliopsis sp., presentes en dolomías de la cantera de Redueña (Madrid) e identificados por SPO, siguiendo el protocolo de aplicación descrito en Pena-Poza et al (2018). Se establecieron estrategias para diferenciar los efectos del biocida aplicado sin limpieza mecánica previa y aplicándolo con esponja o cepillo.…”

Section: Publicaciones Destacadas De Los úLtimos 5 Añosunclassified

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Effect of biological colonization on ceramic roofing tiles by lichens and a combined laser and biocide procedure for its removal

Cited by 22 publications

References 28 publications

Biocide emissions from building materials during wet weather: identification of substances, mechanism of release and transfer to the aquatic environment

Biocide emissions from building materials during wet weather: identification of substances, mechanism of release and transfer to the aquatic environment

The Control of Cultural Heritage Microbial Deterioration

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