Oil sludge treatment by photocatalysis applying black and white light

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• 作者：Otidene Rossiter Sá ; da Rocha ; Renato F. Dantas ; Marta Maria Menezes B. Duarte ; Marcia Maria Lima Duarte ; Valdinete Lins da Silva
• 关键词：Petroleum waste ; Advanced oxidation ; Heterogeneous photocatalysis ; Hydrocarbons ; Polycyclic aromatic hydrocarbons
• 刊名：Chemical Engineering Journal
• 出版年：2010
• 出版时间：15 February 2010
• 年：2010
• 卷：157
• 期：1
• 页码：80-85
• 全文大小：705 K

文摘

Soil contamination by non-aqueous phase liquid compounds (NAPLs), mainly from petroleum hydrocarbons, has been a matter of great concern, especially due to aromatic and polycyclic aromatic hydrocarbon contamination, which can pose a health risk due to its carcinogenic and mutagenic properties. In this study, oil sludge treatment was carried out using heterogeneous photocatalysis (H₂O₂/UV/TiO₂). A 2³ factorial design experimental plan was used, applying black and white light reactors; in addition the effects of hydrogen peroxide (H₂O₂) concentration, TiO₂ mass and irradiation time were evaluated using TOC removal as a response. Heterogeneous photocatalysis provided efficient degradation and mineralization of a large part of the organic matter. Moreover, the method also proved to be an alternative treatment for removing PAH from oil sludge, eliminating 100 % of all PAH content from the oil sludge sample after 96 h of irradiation.