Application of a hybrid system comprising carbon-doped TiO2 film and a ceramic media-packed biofilter for enhanced removal of gaseous styrene
| Autor: | Gang Liu, Hong-Kwan Cho, Byung-Woo Kim, Moon-Sun Kim |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Ceramics
Environmental Engineering Materials science Absorption spectroscopy Light Health Toxicology and Mutagenesis chemistry.chemical_element Combustion Styrene chemistry.chemical_compound Carbon doped Environmental Chemistry Ceramic Waste Management and Disposal Titanium Environmental engineering Photochemical Processes Pollution Carbon Chemical engineering chemistry visual_art Hybrid system Biofilter visual_art.visual_art_medium Gases Filtration |
| Zdroj: | Journal of hazardous materials. 190(1-3) |
| ISSN: | 1873-3336 |
| Popis: | It is difficult to efficiently remove gaseous styrene using a TiO(2) film-coated photoreactor under UV light. Therefore, we used a hybrid system consisting of a carbon-doped TiO(2) (C-TiO(2)) film and a media-packed biofilter in order to enhance the removal efficiency (RE) of gaseous styrene compared to that of a pure (undoped) TiO(2) photoreactor. The C-TiO(2) was synthesized by a sol-gel combustion method, and its absorption spectrum was stronger that of pure (undoped) TiO(2) in the UV-vis range. The resultant RE of the C-TiO(2) film was 113-200% higher than that of the pure TiO(2) film. The initial RE of the photoreactor for input styrene concentrations of 630 mg m(-3), 420 mg m(-3), and 105 mg m(-3) was 20.6%, 29.8%, and 40.0%, respectively. When the biofilter was added, the RE increased to 93.3%, 97.9%, and 99.0%, respectively. Thus, application of the hybrid system consisting of both a photoreactor coated with a C-TiO(2) film and a biofilter is advantageous in terms of the removal efficiency of gaseous styrene. |
| Databáze: | OpenAIRE |
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