AI Article Synopsis
- PAHs are harmful environmental pollutants linked to cancer and genetic mutations, prompting research into their breakdown under UV light.
- The study found that UV radiation at 306 nm was more effective in breaking down PAHs compared to 254 nm, with fluoranthene being the fastest to decompose.
- Photolysis emerged as an effective method for remediating the six studied PAHs, with varying resistance to decomposition among different compounds.
Article Abstract
Polycyclic aromatic hydrocarbons (PAHs) are potent environmental pollutants, and some of them have been identified as carcinogenic and mutagenic. To advance the knowledge of the environmental fate of PAHs, we systematically investigated the influence of different UV wavelengths irradiation on photolysis of PAHs on sandy soil under tow wavelengths (254 and 306 nm) UV irradiation for six PAHs. In addition, kinetic model and influence of several parameters on PAHs photolysis have been studied. The results obtained indicated that UV radiation with a wavelength of 306 nm was more efficient in the photolysis of the polycyclic aromatic hydrocarbons. Our results showed that fluoranthene (Flt) was the fastest in decomposition, has the greatest value for the coefficient of photolysis (7.4 × 10(-3) h(-1)), and has less half-life, reaching 94 h when using a wavelength of 254 nm. The results indicated that the pyrene (Pyr) was more resistant to photolysis in comparison with indeno(1,2,3-cd) pyrene (IP) and fluoranthene (Flt). The results indicate that photolysis is a successful way to remediate the six studied PAHs compounds.
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| http://dx.doi.org/10.1007/s11356-015-4082-x | DOI Listing |
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