| Title: | Enhanced xylene removal by photocatalytic oxidation using fiber-illuminated honeycomb reactor at ppb level |
| Author(s): | Wu YT; Yu YH; Nguyen VH; Lu KT; Wu JC; Chang LM; Kuo CW; |
| Address: | "Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan" |
| DOI: | 10.1016/j.jhazmat.2013.09.037 |
| ISSN/ISBN: | 1873-3336 (Electronic) 0304-3894 (Linking) |
| Abstract: | "The removal of volatile organic compounds (VOCs) at ppb level is one of the most critical challenges in clean rooms for the semiconductor industry. Photocatalytic oxidation is an innovative and promising technology for ppb-level VOCs degradation. We have designed a fiber-illuminated honeycomb reactor (FIHR) in which the removal efficiency of m-xylene is significantly enhanced to 96.5% as compared to 22.0% for UV irradiation only. The results indicate that photocatalysts not only play the role to substantially oxidize m-xylene, but also alter the chemical properties of xylene under UV illumination. Using the FIHR with Mn-TiO2 photocatalyst not only increased the m-xylene removal efficiency, but also increased the CO2 selectivity. Interestingly, Mn-TiO2 in FIHR also showed a very good reusability, 93% removal efficiency was still achieved in 72-h in reaction. Thus, the FIHR gave very high removal efficiency for xylene at ppb level under room temperature. The FIHR has great potential application in the clean room for the air purification system in the future" |
| Keywords: | Air Pollutants/*chemistry Catalysis Hydrogen Peroxide/chemistry Manganese/chemistry Oxidation-Reduction Photochemical Processes Recycling Semiconductors Titanium/*chemistry/*radiation effects *Ultraviolet Rays Water/chemistry Xylenes/*chemistry Ceramic ho; |
| Notes: | "MedlineWu, Yi-Ting Yu, Yi-Hui Nguyen, Van-Huy Lu, Kung-Te Wu, Jeffrey Chi-Sheng Chang, Luh-Maan Kuo, Chi-Wen eng Research Support, Non-U.S. Gov't Netherlands 2013/10/22 J Hazard Mater. 2013 Nov 15; 262:717-25. doi: 10.1016/j.jhazmat.2013.09.037. Epub 2013 Sep 23" |
