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

Journal of the Brazilian Chemical Society

Jardim, Wilson F.¹  Silva, Paula Tereza de S. e¹  Locatelli, Marco A. F.¹  Universidade Estadual de Campinas, Campinas, Brazil¹  Universidade Federal de Pernambuco, Recife, Brazil¹  B.Neto, Benício¹  Motta, Mauricio da¹  Silva, Valdinete Lins da¹  Castro, Gabriela Ribeiro de¹ 

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

DOI  :  10.1590/S0103-50532008000200020

学科分类：化学（综合）

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】

Unknown