RATES OF PHOTOCATALYTIC OXIDATION OF CRUDE-OIL ON SALT-WATER ON BUOYANT, CENOSPHERE-ATTACHED TITANIUM-DIOXIDE

被引：56

作者：

NAIR, M ^{[1
]}

LUO, ZH ^{[1
]}

HELLER, A ^{[1
]}

机构：

[1] UNIV TEXAS,DEPT CHEM ENGN,AUSTIN,TX 78712

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 1993年 / 32卷 / 10期

关键词：

D O I：

10.1021/ie00022a015

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The rate of TiO2-photocatalyzed oxidation of crude oils spilled on aqueous 0.5 M NaCl was determined by measuring the rate Of O2 uptake. The photocatalyst was attached to 100-mum-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 25 W m-2, but varied only mildly with irradiance in the 25-45 W m-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 (Arab Heavy, Arab Light, Basrah Light, and Texaco Bruce No. 1). From the measured rates, cleanup times as short as 5-10 days were estimated.

引用

页码：2318 / 2323

页数：6

共 30 条

[1] WEATHERING OF CRUDE-OIL IN NATURAL MARINE ENVIRONMENTS - THE CONCENTRATION OF POLAR DEGRADATION PRODUCTS IN WATER UNDER OIL AS MEASURED IN SEVERAL FIELD STUDIES [J].