Endogenous iron as a photo-Fenton reaction catalyst for the degradation of Pah's in soils

Journal of the Brazilian Chemical Society

Paula Tereza De S. E Silva²  Marco A. F. Locatelli¹  Wilson F. Jardim¹  Benício B.neto²  Mauricio Da Motta¹  Gabriela Ribeiro De Castro¹  Valdinete Lins Da Silva¹ 

[1] ,Universidade Federal de Pernambuco Departamento de Química Fundamental Recife P ,Brazil

关键词: soil;    remediation;    petroleum fuel;    photo-Fenton;    photo-Fenton-like;   

DOI  :  10.1590/S0103-50532008000200020

来源: SciELO

【 摘 要 】

Polycyclic aromatic hydrocarbon (PAH) components of diesel fuel are considered hazardous, due to their toxicity. We report the degradation of 16 PAHs using photo-Fenton and photo-Fenton-like processes in two different soil samples (S1 and S2) artificially contaminated with diesel oil. Experimental factorial designs were used to determine the most effective treatment conditions, with a view to achieving economical feasibility. For photo-Fenton reactions, the best degradation conditions resulted in an overall PAH concentration reduction of 94.6% and 95.6% for soils S1 and S2, respectively. The photo-Fenton-like processes also led to satisfactory degradation levels, obtained with only endogenous iron, low hydrogen peroxide concentration, short exposure time and no soil pH adjustment. These results demonstrate the viability of photo-Fenton-like processes to treat PAH contaminated areas.

【 授权许可】

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