| Magnetically agitated photocatalytic reactor for photocatalytic oxidation of aqueous phase organic pollutants. | |
| | |
MedLine Citation:
|
PMID: 16295874 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
A magnetically agitated photocatalytic reactor (MAPR) has been developed and assessed for oxidation of phenol. The MAPR uses a titanium dioxide composite photocatalyst with a ferromagnetic barium ferrite core. The catalyst motion was controlled with a dual-component magnetic field. First, a permanent magnet above the reactor provided a static magnetic field to counteract the force of gravity, hence increasing catalyst exposure to UV. Second, an alternating magnetic field generated by a solenoid was used to agitate the catalyst, thus increasing mass transfer between pollutants and byproducts to the catalyst. Optimal performance of the MAPR was achieved with the permanent magnet present and 1 A of alternating current to the solenoid between 20 and 80 Hz. Operating with a 60-Hz signal at 1 A with the permanent magnet present and 100 mg of catalyst, the system reduced an 11 mg/L phenol concentration by97% and decreased nonpurgeable dissolved organic carbon by 93% in 7 h using three 8-W 365-nm peak UV lamps. |
| | |
Authors:
|
William L Kostedt; Jack Drwiega; David W Mazyck; Seung-Woo Lee; Wolfgang Sigmund; Chang-Yu Wu; Paul Chadik |
Related Documents
:
|
16808074 - A review of magnetic resonance imaging compatible manipulators in surgery. 11816614 - Magnetic resonance imaging safety: implications for cardiovascular patients. 12826974 - Anesthesia during high-field intraoperative magnetic resonance imaging experience with ... 18281944 - Nanoscaling laws of magnetic nanoparticles and their applicabilities in biomedical scie... 22470734 - Osteoblastoma of the frontal sinuses presenting with headache and blurred vision: case ... 17649904 - Quantitative rotating multisegment slant-hole spect mammography with attenuation and co... |
Publication Detail:
|
Type: Comparative Study; Journal Article; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
|
Title: Environmental science & technology Volume: 39 ISSN: 0013-936X ISO Abbreviation: Environ. Sci. Technol. Publication Date: 2005 Oct |
Date Detail:
|
Created Date: 2005-11-18 Completed Date: 2006-05-31 Revised Date: 2008-11-21 |
Medline Journal Info:
|
Nlm Unique ID: 0213155 Medline TA: Environ Sci Technol Country: United States |
Other Details:
|
Languages: eng Pagination: 8052-6 Citation Subset: IM |
Affiliation:
|
Department of Environmental Engineering Sciences, University of Florida, 321 A. P. Black Hall, P.O. Box 116450, Gainesville, Florida 32611-6450, USA. kostedt@ufl.edu |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Catalysis Chromatography, Gas Electromagnetic Phenomena Oxidants, Photochemical / chemistry Phenols / analysis, chemistry* Photochemistry / instrumentation*, methods* Titanium Ultraviolet Rays Water Pollutants, Chemical / analysis* Water Purification / methods* |
| Chemical | |
Reg. No./Substance:
|
0/Oxidants, Photochemical; 0/Phenols; 0/Water Pollutants, Chemical; 13463-67-7/titanium dioxide; 7440-32-6/Titanium |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Sorption and desorption of arsenic to ferrihydrite in a sand filter.
Next Document: Model assessment of biogeochemical controls on dissolved organic carbon partitioning in an acid orga...