کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
66014 | 48413 | 2012 | 7 صفحه PDF | دانلود رایگان |
Pyrene and fluoranthene, typical polycyclic aromatic hydrocarbons, are very difficult to be removed from water due to their hydrophilic nature and relatively low reactivity towards ozone. In the study, Ce-loaded activated carbon (Ce-AC) is prepared and used as catalyst to promote pyrene and fluoranthene degradation by ozone. The catalytic activity of Ce-AC is investigated under various experiment conditions. Results indicate both of pyrene and fluoranthene removals are significantly enhanced in Ce-AC + O3 due to effective generation of hydroxyl radicals (OH), as compared to ozonation alone and AC + O3. The mineral matter present in the activated carbon positively contributes to remove fluoranthene and the optimized cerium loading of AC is 0.3% in ozonation process. Moreover, the toxicity of pyrene is more than that of fluoranthene and the reaction solution's toxicity is substantially reduced by catalytic ozonation with Ce-AC.
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► The preparation of a series of Ce-AC was carried out.
► The operational parameters were systematically investigated.
► The toxicity of the reaction solution was assessed.
► The main possible reaction pathway is illustrated.
Journal: Journal of Molecular Catalysis A: Chemical - Volumes 363–364, November 2012, Pages 101–107