Rates of photocatalytic oxidation of crude oil on salt water on buoyant, cenosphere-attached titanium dioxide

Journal Article · Fri Oct 01 00:00:00 EDT 1993 · Industrial and Engineering Chemistry Research; (United States)

DOI:https://doi.org/10.1021/ie00022a015· OSTI ID:5864867

Nair, M; Luo, Zhenghao; Heller, A ^[1]

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1. Univ. of Texas, Austin, TX (United States)

The rate of TiO[sub 2]-photocatalyzed oxidation of crude oils spilled on aqueous 0.5 M NaCA was determined by measuring the rate of O[sub 2] uptake. The photocatalyst was attached to 100-[mu]m-diameter fly-ash-derived buoyant cenospheres. Partial hydrophobic coating of the cenospheres assured their retention at the air-oil interface. The rate depended on the near-UV (broad band, 365-nm peak) irradiance below 25W m[sup [minus]2], but varied only mildly with irradiance in the 25-45 W m[sup [minus]2] range. It increased upon wave motion imitating agitation of the liquid, and upon increase of the cenosphere:oil mass ratio. It varied only mildly for different crudes. From the measured rates, cleanup times as short as 5-10 days were estimated.

• OSTI ID: 5864867
• Journal Information: Industrial and Engineering Chemistry Research; (United States), Vol. 32:10; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
PETROLEUM
PHOTOCHEMICAL REACTIONS
TITANIUM OXIDES
CATALYTIC EFFECTS
OIL SPILLS
OXIDATION
SEAWATER
CHALCOGENIDES
CHEMICAL REACTIONS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
WATER
020900* - Petroleum- Environmental Aspects