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Article: Vacuum ultraviolet-irradiated photocatalysis: advanced process for toluene abatement
Title | Vacuum ultraviolet-irradiated photocatalysis: advanced process for toluene abatement | ||||
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Authors | |||||
Keywords | Advanced process Air flow-rate Catalytic ozonation Energetic photons Influencing factor | ||||
Issue Date | 2011 | ||||
Publisher | American Society of Civil Engineers. The Journal's web site is located at http://www.pubs.asce.org/journals/ee.html | ||||
Citation | Journal of Environmental Engineering, 2011, v. 137 n. 11, p. 996-1001 How to Cite? | ||||
Abstract | Photocatalysis with irradiation of a vacuum ultraviolet (VUV) lamp (VUV-PCO) was used to remove toluene in air. Two parallel reactions with irradiation of a 254nm lamp (254nm-PCO) and without TiO 2 (i.e., VUV photolysis) were conducted for comparison. The influencing factors of relative humidity, initial toluene concentration, and air flow rate were investigated. The results showed that VUV-PCO achieved much higher toluene removal efficiency and better PCO durability than 254nm-PCO under different operating conditions. 82.3% toluene conversion was obtained with 1.8ppm outlet O 3 concentration in the former, but only 14.5% with 30ppm outlet concentration of O 3 was obtained in the latter under the conditions of 1% humidity, 50ppm initial toluene concentration, and 1 L/min flow rate. Energetic photons from the VUV lamp could efficiently destruct toluene directly. O 3 formed from VUV irradiation of O 2 enhanced the toluene abatement by catalytic ozonation and inhibited the recombination of electron/hole pairs and deactivation of the photocatalyst. VUV-PCO could simultaneously overcome the limitations of the conventional PCO process. It is a promising technology for toluene abatement. © 2011 American Society of Civil Engineers. | ||||
Persistent Identifier | http://hdl.handle.net/10722/149105 | ||||
ISSN | 2023 Impact Factor: 1.6 2023 SCImago Journal Rankings: 0.475 | ||||
ISI Accession Number ID |
Funding Information: The authors gratefully acknowledge the financial support from the conference and research grant of the University of Hong Kong (Grant No. 200907176159). | ||||
References | |||||
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DC Field | Value | Language |
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dc.contributor.author | Huang, HB | en_HK |
dc.contributor.author | Leung, DYC | en_HK |
dc.date.accessioned | 2012-06-22T06:23:45Z | - |
dc.date.available | 2012-06-22T06:23:45Z | - |
dc.date.issued | 2011 | en_HK |
dc.identifier.citation | Journal of Environmental Engineering, 2011, v. 137 n. 11, p. 996-1001 | en_HK |
dc.identifier.issn | 0733-9372 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/149105 | - |
dc.description.abstract | Photocatalysis with irradiation of a vacuum ultraviolet (VUV) lamp (VUV-PCO) was used to remove toluene in air. Two parallel reactions with irradiation of a 254nm lamp (254nm-PCO) and without TiO 2 (i.e., VUV photolysis) were conducted for comparison. The influencing factors of relative humidity, initial toluene concentration, and air flow rate were investigated. The results showed that VUV-PCO achieved much higher toluene removal efficiency and better PCO durability than 254nm-PCO under different operating conditions. 82.3% toluene conversion was obtained with 1.8ppm outlet O 3 concentration in the former, but only 14.5% with 30ppm outlet concentration of O 3 was obtained in the latter under the conditions of 1% humidity, 50ppm initial toluene concentration, and 1 L/min flow rate. Energetic photons from the VUV lamp could efficiently destruct toluene directly. O 3 formed from VUV irradiation of O 2 enhanced the toluene abatement by catalytic ozonation and inhibited the recombination of electron/hole pairs and deactivation of the photocatalyst. VUV-PCO could simultaneously overcome the limitations of the conventional PCO process. It is a promising technology for toluene abatement. © 2011 American Society of Civil Engineers. | en_HK |
dc.language | eng | en_US |
dc.publisher | American Society of Civil Engineers. The Journal's web site is located at http://www.pubs.asce.org/journals/ee.html | en_HK |
dc.relation.ispartof | Journal of Environmental Engineering | en_HK |
dc.rights | Journal of Environmental Engineering. Copyright © American Society of Civil Engineers. | - |
dc.subject | Advanced process | en_HK |
dc.subject | Air flow-rate | en_HK |
dc.subject | Catalytic ozonation | en_HK |
dc.subject | Energetic photons | en_HK |
dc.subject | Influencing factor | - |
dc.title | Vacuum ultraviolet-irradiated photocatalysis: advanced process for toluene abatement | en_HK |
dc.type | Article | en_HK |
dc.identifier.email | Huang, HB: harbor@hku.hk | en_HK |
dc.identifier.email | Leung, DYC: ycleung@hku.hk | - |
dc.identifier.authority | Leung, DYC=rp00149 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1061/(ASCE)EE.1943-7870.0000415 | en_HK |
dc.identifier.scopus | eid_2-s2.0-84055177472 | en_HK |
dc.identifier.hkuros | 200100 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-84055177472&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 137 | en_HK |
dc.identifier.issue | 11 | en_HK |
dc.identifier.spage | 996 | en_HK |
dc.identifier.epage | 1001 | en_HK |
dc.identifier.isi | WOS:000298247700003 | - |
dc.publisher.place | United States | en_HK |
dc.relation.project | Destruction of multiple indoor air pollutants using photocatalysis irradiated by ozone-producing UV lamp | - |
dc.identifier.scopusauthorid | Leung, DYC=7203002484 | en_HK |
dc.identifier.scopusauthorid | Huang, HB=36607846400 | en_HK |
dc.identifier.issnl | 0733-9372 | - |