Photocatalytic Active Coatings for Lignin Degradation in a Continuous Packed Bed Reactor
| Autor: | Colin Awungacha Lekelefac, Michael Herrenbauer, J. Hild, Peter Czermak |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Packed bed
Chromatography Materials science Article Subject Renewable Energy Sustainability and the Environment lcsh:TJ807-830 lcsh:Renewable energy sources General Chemistry Porous glass Atomic and Molecular Physics and Optics Catalysis Lignin degradation Chemical engineering Photocatalysis General Materials Science Solid phase extraction Photocatalytic degradation |
| Zdroj: | International Journal of Photoenergy, Vol 2014 (2014) |
| ISSN: | 1110-662X |
| DOI: | 10.1155/2014/502326 |
| Popis: | The synthesis of immobilized catalyst on porous glass support material via the sol-gel route is reported. TiO2-P25-SiO2+ Pt, TiO2-P25-SiO2, TiOSO4_30.6 wt%, and ZnO + TiO2-P25-SiO2catalysts were synthesized and a comparative study is done regarding morphology of coatings, degradation rates, reaction rates, dissolved carbon (DC), formation of peaks, and fluorescence of products formed from the photocatalytic degradation of lignin sulfonate obtained from a local paper plant. Through simultaneous reaction-extraction pathways applying dialysis filtration and highly porous polystyrene divinylbenzene adsorbent resin (HR-P) for solid phase extraction (SPE), an attempt has been made to isolate smaller molecules produced from photocatalytic degradation. Moreover relatively high lignin sulfonate (0.5 g/L) concentrations are used in the reactions. UV-Vis spectroscopy revealed a faster reduction in the concentration values for the aliphatic moiety compared to the aromatic moiety. Peaks were observed by both fluorescence spectroscopy and HPLC suggesting the production of new substances and fluorophores. |
| Databáze: | OpenAIRE |
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