Citation:

Ireland*, J C., B Davila*, H Moreno*, S. Fink, AND S. Tassos. HETEROGENEOUS PHOTOCATALYTIC DECOMPOSITION OF POLY- AROMATIC HYDROCARBONS OVER TITANIUM DIOXIDE. doi:10.1016/0045-653, H. Fiedler, L.L. Needham (ed.), CHEMOSPHERE. Elsevier BV, AMSTERDAM, Netherlands, 30(5):965-984, (1995).

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Description:

The photocatalytic degradation of a mixture of 16 polyaromatic hydrocarbons (PAHs) was investigated in aqueous suspensions of high surface area TiO₂ illuminated with 310–380 nm ultraviolet light. Triethylamine was utilized for extraction of PAH compounds from motor oil contaminated soil and subsequently to increase PAH solubilities in TiO₂/water slurries. Minimum steady-state hydroxyl radical (HO•) concentrations generated during photocatalysis were determined directly by electrospray ionization mass spectrometry analysis of a stable spin-trapped HO• adduct. In contrast to organic compounds like trichloroethylene which are readily mineralized over TiO₂, the PAHs investigated here were relatively slow to degrade although several compounds (acenaphthylene, anthracene, benzo(a)pyrene, and dibenzo(a,h)anthracene) displayed exceptional decomposition kinetics.

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HETEROGENEOUS PHOTOCATALYTIC DECOMPOSITION OF POLY- AROMATIC HYDROCARBONS OVER TITANIUM DIOXIDE  

Record Details:

Record Type:DOCUMENT( JOURNAL/ PEER REVIEWED JOURNAL)

Product Published Date:03/01/1995

Record Last Revised:06/26/2008

OMB Category:Other

Record ID: 115930

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Access Procedures :EPA ONLY

Document IDs:

EPA Number :EPA/600/J-95/219