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Leaching of Biocides from Façades under Natural Weather Conditions.

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Title: Leaching of Biocides from Façades under Natural Weather Conditions.
Authors: Burkhardt, M.1,2 Michael.Burkhardt@hsr.ch, Zuleeg, S.1,3, Vonbank, R.4, Bester, K.5, Carmeliet, J.4,6, Boller, M.1, Wangler, T.4,6
Source: Environmental Science & Technology. 5/15/2012, Vol. 46 Issue 10, p5497-5503. 7p.
Subjects: Biocides, Leaching & the environment, Mass budget (Geophysics), Field emission, Diuron, Isoproturon
Abstract: Biocides are included in organic building façade coatings as protection against biological attack by algae and fungi but have the potential to enter the environment via leaching into runoff from wind driven rain. The following field study correlates wind driven rain to runoff and measured the release of several commonly used organic biocides (terbutryn, Irgarol 1051, diuron, isoproturon, OIT, DCOIT) in organic façade coatings from four coating systems. During one year of exposure of a west oriented model house façade in the Zurich, Switzerland area, an average of 62.7 L/m², or 6.3% of annual precipitation came off the four façade panels installed as runoff. The ISO method for calculating wind driven rain loads is adapted to predict runoff and can be used in the calculation of emissions in the field. Biocide concentrations tend to be higher in the early lifetime of the coatings and then reach fairly consistent levels later, generally ranging on the order of mg/L or hundreds of μg/L. On the basis of the amount remaining in the film after exposure, the occurrence of transformation products, and the calculated amounts in the leachate, degradation plays a significant role in the overall mass balance. [ABSTRACT FROM AUTHOR]
Copyright of Environmental Science & Technology is the property of American Chemical Society 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: Engineering Source
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DbLabel: Engineering Source
An: 76282820
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Leaching of Biocides from Façades under Natural Weather Conditions.
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  Data: <searchLink fieldCode="AR" term="%22Burkhardt%2C+M%2E%22">Burkhardt, M.</searchLink><relatesTo>1,2</relatesTo><i> Michael.Burkhardt@hsr.ch</i><br /><searchLink fieldCode="AR" term="%22Zuleeg%2C+S%2E%22">Zuleeg, S.</searchLink><relatesTo>1,3</relatesTo><br /><searchLink fieldCode="AR" term="%22Vonbank%2C+R%2E%22">Vonbank, R.</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Bester%2C+K%2E%22">Bester, K.</searchLink><relatesTo>5</relatesTo><br /><searchLink fieldCode="AR" term="%22Carmeliet%2C+J%2E%22">Carmeliet, J.</searchLink><relatesTo>4,6</relatesTo><br /><searchLink fieldCode="AR" term="%22Boller%2C+M%2E%22">Boller, M.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Wangler%2C+T%2E%22">Wangler, T.</searchLink><relatesTo>4,6</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Environmental+Science+%26+Technology%22">Environmental Science & Technology</searchLink>. 5/15/2012, Vol. 46 Issue 10, p5497-5503. 7p.
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  Data: <searchLink fieldCode="DE" term="%22Biocides%22">Biocides</searchLink><br /><searchLink fieldCode="DE" term="%22Leaching+%26+the+environment%22">Leaching & the environment</searchLink><br /><searchLink fieldCode="DE" term="%22Mass+budget+%28Geophysics%29%22">Mass budget (Geophysics)</searchLink><br /><searchLink fieldCode="DE" term="%22Field+emission%22">Field emission</searchLink><br /><searchLink fieldCode="DE" term="%22Diuron%22">Diuron</searchLink><br /><searchLink fieldCode="DE" term="%22Isoproturon%22">Isoproturon</searchLink>
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  Data: Biocides are included in organic building façade coatings as protection against biological attack by algae and fungi but have the potential to enter the environment via leaching into runoff from wind driven rain. The following field study correlates wind driven rain to runoff and measured the release of several commonly used organic biocides (terbutryn, Irgarol 1051, diuron, isoproturon, OIT, DCOIT) in organic façade coatings from four coating systems. During one year of exposure of a west oriented model house façade in the Zurich, Switzerland area, an average of 62.7 L/m², or 6.3% of annual precipitation came off the four façade panels installed as runoff. The ISO method for calculating wind driven rain loads is adapted to predict runoff and can be used in the calculation of emissions in the field. Biocide concentrations tend to be higher in the early lifetime of the coatings and then reach fairly consistent levels later, generally ranging on the order of mg/L or hundreds of μg/L. On the basis of the amount remaining in the film after exposure, the occurrence of transformation products, and the calculated amounts in the leachate, degradation plays a significant role in the overall mass balance. [ABSTRACT FROM AUTHOR]
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  Group: Ab
  Data: <i>Copyright of Environmental Science & Technology is the property of American Chemical Society 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: 10.1021/es2040009
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        Text: English
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      – SubjectFull: Leaching & the environment
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      – SubjectFull: Mass budget (Geophysics)
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      – SubjectFull: Field emission
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      – SubjectFull: Diuron
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      – SubjectFull: Isoproturon
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      – TitleFull: Leaching of Biocides from Façades under Natural Weather Conditions.
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              Text: 5/15/2012
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