Development of photocatalytically active coatings for concrete substrates

Title: Development of photocatalytically active coatings for concrete substrates
Author(s): F. Dehn
Paper category : conference
Book title: RILEM International Symposium on Environment-Conscious Materials and Systems for Sustainable Development
Editor(s): N. Kashino and Y. Ohama
Print-ISBN: 2-912143-55-1
e-ISBN: 2912143640
Publisher: RILEM Publications SARL
Publication year: 2004
Pages: 347 - 352
Total Pages: 6
Nb references: 7
Language: English

Abstract: Solar water treatment is an innovative technology in wastewater treatment. Photocatalytically generated oxidizing species can decompose organic compounds present in water or air streams into carbon dioxide, water, and mineral salts.In the following we will report the results of an investigation concerning the development of active catalytic coatings made of titanium dioxide fixed onto concrete substrates. High-performance concrete has been chosen as substrate and was compared to standard coatings on glass. Further, different fixation methods like spray coating, rolling, and painting were tested. In order to compare the catalytic film activities the degradation of a model pollutant (dichloroacetic acid) was tested on a thin-film fixed-bed reactor. The reactor was equipped with an automated back titration apparatus, keeping the solution pH constant and compensating for solvent evaporation.

Online publication: 2004-11-24
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143640.041