【摘 要】
：
Photochemical degradation of crude oil in seawater is an important issue in marine environmental protection and is studied in this work. Results showed that pet
【机 构】
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College of Chemistry and Chemical Engineering,Department of Chemistry
【基金项目】
：
国家自然科学基金;教育部科学技术研究重点项目;教育部高校新世纪杰出人才项目
论文部分内容阅读
Photochemical degradation of crude oil in seawater is an important issue in marine environmental protection and is studied in this work. Results showed that petroleum hydrocarbons could be effectively degraded by the irradiation of high-pressure mercury light or natural sunlight. Photochemical reaction was controlled by various factors including light source, aquatic medium, heavy metal ion and photo-sensitizer. The rate of photo-degradation was fast at the initial stage of exposure, exhibiting a first-order reaction kinetic behavior. However, after irradiation for a few hours, the concentration of water-soluble fraction (WSF) of petroleum hydrocarbons stabilized. For all experimental conditions, the range of the photo-degradation rate is from 0.001 3 to 0.005 7/min.
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