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Laboratory scale studies of biocide leaching from façade coatings

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Title: Laboratory scale studies of biocide leaching from façade coatings
Authors: Wangler, T.P.1,2 wangler@arch.ethz.ch, Zuleeg, S.3, Vonbank, R.2, Bester, K.4, Boller, M.3, Carmeliet, J.1,2, Burkhardt, M.3
Source: Building & Environment. Aug2012, Vol. 54, p168-173. 6p.
Subject Terms: *Biocides, *Leaching, *Organic architecture, *Emissions (Air pollution), *Temperature effect, Facades, Risk assessment
Abstract: Abstract: Organic architectural coatings require the use of biocides to prevent microbial defacement of building façades. The biocides are meant to slowly release to the surface, but they can still potentially enter the environment via runoff during rain events. Accurate source emissions estimates are necessary for risk assessments, and knowledge of the release mechanism can aid both regulators and producers alike. In this study, several biocides and several market and reference coating systems were subjected to regular irrigation and drying cycles with varying temperature conditions. The results were compared to other studies and models from the controlled release literature, demonstrating diffusion controlled release with dependence on the experimental conditions. The role of wetting and drying cycles in accelerating release is highlighted. [Copyright &y& Elsevier]
Copyright of Building & Environment is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: GreenFILE
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Header DbId: 8gh
DbLabel: GreenFILE
An: 73987804
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Laboratory scale studies of biocide leaching from façade coatings
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  Data: <searchLink fieldCode="JN" term="%22Building+%26+Environment%22">Building & Environment</searchLink>. Aug2012, Vol. 54, p168-173. 6p.
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  Data: *<searchLink fieldCode="DE" term="%22Biocides%22">Biocides</searchLink><br />*<searchLink fieldCode="DE" term="%22Leaching%22">Leaching</searchLink><br />*<searchLink fieldCode="DE" term="%22Organic+architecture%22">Organic architecture</searchLink><br />*<searchLink fieldCode="DE" term="%22Emissions+%28Air+pollution%29%22">Emissions (Air pollution)</searchLink><br />*<searchLink fieldCode="DE" term="%22Temperature+effect%22">Temperature effect</searchLink><br /><searchLink fieldCode="DE" term="%22Facades%22">Facades</searchLink><br /><searchLink fieldCode="DE" term="%22Risk+assessment%22">Risk assessment</searchLink>
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  Data: Abstract: Organic architectural coatings require the use of biocides to prevent microbial defacement of building façades. The biocides are meant to slowly release to the surface, but they can still potentially enter the environment via runoff during rain events. Accurate source emissions estimates are necessary for risk assessments, and knowledge of the release mechanism can aid both regulators and producers alike. In this study, several biocides and several market and reference coating systems were subjected to regular irrigation and drying cycles with varying temperature conditions. The results were compared to other studies and models from the controlled release literature, demonstrating diffusion controlled release with dependence on the experimental conditions. The role of wetting and drying cycles in accelerating release is highlighted. [Copyright &y& Elsevier]
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  Data: <i>Copyright of Building & Environment is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.buildenv.2012.02.021
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      – Code: eng
        Text: English
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        PageCount: 6
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      – SubjectFull: Organic architecture
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      – SubjectFull: Emissions (Air pollution)
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      – SubjectFull: Temperature effect
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      – TitleFull: Laboratory scale studies of biocide leaching from façade coatings
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              Text: Aug2012
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