| Photocatalytic degradation of Acid Red 4 using a titanium dioxide membrane supported on a porous ceramic tube. | |
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MedLine Citation:
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PMID: 18814899 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A photocatalytic membrane supported on a porous ceramic tube was described, in which permeation of solutes through the membrane and tube and photocatalytic reaction occur simultaneously. In this photocatalytic membrane reactor, TiO(2) catalyst was coated on the surface of a porous ceramic tube and all experiments were conducted in one pass dead-end system. The objectives of this study are to demonstrate the predominance of dead-end operation and to determine the reaction kinetics model of the photocatalytic reaction. Acid Red 4 (AR 4) dye was used as a model pollutant. A detailed study of physical parameters including flow configurations (dead-end and cross-flow), flow rate, initial dye concentration, light intensity and catalyst loading has been performed to obtain the reaction kinetics. The simultaneous effect of light intensity and catalyst loading was also determined experimentally. Experiments were also conducted to compare the photocatalytic degradation of AR 4 in the dead-end and cross-flow system. The major findings of this study are: (1) the decomposition ratios for dead-end system were three and five times higher than cross-flow system at flow rates of 6.67x10(-8) and 4.00x10(-7)m(3)/s, respectively. (2) The decomposition ratio increased with increasing catalyst loading and light intensity, but remained constant at higher catalyst loading. (3) The decomposition ratio was found to be decreased with increasing flow rate. |
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Authors:
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Wen-Yu Wang; Agus Irawan; Young Ku |
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Publication Detail:
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Type: Journal Article Date: 2008-08-29 |
Journal Detail:
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Title: Water research Volume: 42 ISSN: 0043-1354 ISO Abbreviation: Water Res. Publication Date: 2008 Dec |
Date Detail:
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Created Date: 2008-11-10 Completed Date: 2009-01-23 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0105072 Medline TA: Water Res Country: England |
Other Details:
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Languages: eng Pagination: 4725-32 Citation Subset: IM |
Affiliation:
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Department of Environmental Engineering and Management, Chaoyang University of Technology, 168 Jifong E. Road, Wufong Township, Taichung County, Taiwan. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Azo Compounds
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chemistry* Catalysis Ceramics* Kinetics Membranes, Artificial* Naphthalenes / chemistry* Photochemistry Titanium / chemistry* Ultraviolet Rays |
| Chemical | |
Reg. No./Substance:
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0/Acid Red 4; 0/Azo Compounds; 0/Ceramics; 0/Membranes, Artificial; 0/Naphthalenes; 13463-67-7/titanium dioxide; 7440-32-6/Titanium |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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