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Removal of gaseous toluene by the combination of photocatalytic oxidation under complex light irradiation of UV and visible light and biological process.
J Hazard Mater. 2010 May 15; 177(1-3):814-21.JH

Abstract

Photocatalysis is a promising technology for treatment of gaseous waste; its disadvantages, however, include causing secondary pollution. Biofiltration has been known as an efficient technology for treatment volatile organic compounds (VOCs) at low cost of maintenance, and produces harmless by-products; its disadvantages, include large volume of bioreactor and slow adaptation to fluctuating concentrations in waste gas. A bench scale system integrated with a photocatalytic oxidation and a biofilter unit for the treatment of gases containing toluene was investigated. The integrated system can effectively oxidize toluene with high removal efficiency. The photocatalytic activity of N-TiO(2)/zeolite was evaluated by the decomposition of toluene in air under UV and visible light (VL) illumination. The N-TiO(2)/zeolite has more photocatalytic activity under complex light irradiation of UV and visible light for toluene removal than that of pure TiO(2)/zeolite under UV or visible light irradiation. N-TiO(2)/zeolite was characterized by scanning electron microscopy (SEM), X-ray photoelectron spectrum analysis (XPS), Fourier transform infrared spectroscopy (FT-IR), and as-obtained products were identified by means of gas chromatography/mass spectrometry (GC/MS). Results revealed that the photocatalyst was porous and was high photoactive for mineralizing toluene. The high activity can be attributed to the results of the synergetic effects of strong UV and visible light absorption, surface hydroxyl groups. The photocatalytic degradation reaction of toluene with the N-TiO(2)/zeolite follows Langmuir-Hinshelwood kinetics. Toluene biodegradation rate matches enzymatic oxidation kinetics model.

Authors+Show Affiliations

School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China. weizaishan98@163.comNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

20089355

Citation

Wei, Zaishan, et al. "Removal of Gaseous Toluene By the Combination of Photocatalytic Oxidation Under Complex Light Irradiation of UV and Visible Light and Biological Process." Journal of Hazardous Materials, vol. 177, no. 1-3, 2010, pp. 814-21.
Wei Z, Sun J, Xie Z, et al. Removal of gaseous toluene by the combination of photocatalytic oxidation under complex light irradiation of UV and visible light and biological process. J Hazard Mater. 2010;177(1-3):814-21.
Wei, Z., Sun, J., Xie, Z., Liang, M., & Chen, S. (2010). Removal of gaseous toluene by the combination of photocatalytic oxidation under complex light irradiation of UV and visible light and biological process. Journal of Hazardous Materials, 177(1-3), 814-21. https://doi.org/10.1016/j.jhazmat.2009.12.106
Wei Z, et al. Removal of Gaseous Toluene By the Combination of Photocatalytic Oxidation Under Complex Light Irradiation of UV and Visible Light and Biological Process. J Hazard Mater. 2010 May 15;177(1-3):814-21. PubMed PMID: 20089355.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Removal of gaseous toluene by the combination of photocatalytic oxidation under complex light irradiation of UV and visible light and biological process. AU - Wei,Zaishan, AU - Sun,Jianliang, AU - Xie,Zhirong, AU - Liang,Mingyan, AU - Chen,Shangzhi, Y1 - 2010/01/07/ PY - 2009/06/12/received PY - 2009/11/30/revised PY - 2009/12/26/accepted PY - 2010/1/22/entrez PY - 2010/1/22/pubmed PY - 2010/6/10/medline SP - 814 EP - 21 JF - Journal of hazardous materials JO - J. Hazard. Mater. VL - 177 IS - 1-3 N2 - Photocatalysis is a promising technology for treatment of gaseous waste; its disadvantages, however, include causing secondary pollution. Biofiltration has been known as an efficient technology for treatment volatile organic compounds (VOCs) at low cost of maintenance, and produces harmless by-products; its disadvantages, include large volume of bioreactor and slow adaptation to fluctuating concentrations in waste gas. A bench scale system integrated with a photocatalytic oxidation and a biofilter unit for the treatment of gases containing toluene was investigated. The integrated system can effectively oxidize toluene with high removal efficiency. The photocatalytic activity of N-TiO(2)/zeolite was evaluated by the decomposition of toluene in air under UV and visible light (VL) illumination. The N-TiO(2)/zeolite has more photocatalytic activity under complex light irradiation of UV and visible light for toluene removal than that of pure TiO(2)/zeolite under UV or visible light irradiation. N-TiO(2)/zeolite was characterized by scanning electron microscopy (SEM), X-ray photoelectron spectrum analysis (XPS), Fourier transform infrared spectroscopy (FT-IR), and as-obtained products were identified by means of gas chromatography/mass spectrometry (GC/MS). Results revealed that the photocatalyst was porous and was high photoactive for mineralizing toluene. The high activity can be attributed to the results of the synergetic effects of strong UV and visible light absorption, surface hydroxyl groups. The photocatalytic degradation reaction of toluene with the N-TiO(2)/zeolite follows Langmuir-Hinshelwood kinetics. Toluene biodegradation rate matches enzymatic oxidation kinetics model. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/20089355/Removal_of_gaseous_toluene_by_the_combination_of_photocatalytic_oxidation_under_complex_light_irradiation_of_UV_and_visible_light_and_biological_process_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(10)00004-X DB - PRIME DP - Unbound Medicine ER -