23 Aug '13, 11am

#Smog Eating Building Products Could Produce Smog - EBN: 22:8 via @sharethis #cement #TiO2

Posted by Jean Carroon on Aug 5, 2013, 05:52 PM In 2004, as part of a larger study funded by the Massachusetts Technology Collaborative, Steven Winter Design evaluated the use of TiO2 coatings on windows in an existing large office building (with punched openings), both interior for improved air quality and exterior for reduction of cleaning and slightly improved shading coefficient. The final recommendation not to pursue was based largely on poor ROI (noting that an LCA was not available). However, what I most remember was a statement about potential harmful substances (trichloroactic acid and phosgene) being formed as intermediate compounds during the photocatalytic process and the description of the mining - "TiO2 is produced from titanium-rich sands obtained by dredging in waterways. Environmental impacts include siltation and disturbance of surface waters from dredgin...

Full article: http://www.buildinggreen.com/auth/article.cfm/2013/7/28/S...

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Do Smog-Eating Building Products Produce Smog? ...

Titanium dioxide (TiO2 ) is in everything these days, from toothpaste to latex paint. Valued for opacity, it’s also a powe...

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searchenginejournal.com 23 Aug '13, 5pm

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greenbuildingadvisor.com 28 Aug '13, 11am

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buildinggreen.com 19 Aug '13, 10pm

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