کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1756993 1522983 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of ozonation combined with heterogeneous catalysts and ultraviolet radiation on recycling of gas-station wastewater
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
پیش نمایش صفحه اول مقاله
Effect of ozonation combined with heterogeneous catalysts and ultraviolet radiation on recycling of gas-station wastewater
چکیده انگلیسی

Ozonation is extensively applied in the treatment of drinking water and wastewater due to the powerful oxidation potential of ozone. Heterogeneous catalytic ozonation (HCO) of wastewater proceeds through hydroxyl radicals as the oxidation species. The effect of ozonation alone and combined with catalysts in the presence and absence of UV-radiation was investigated to reuse the biologically pretreated gas-station wastewater instead of fresh water. Two types of catalysts: titanium dioxide (TiO2) and activated carbon (AC) were studied. The concentration of catalyst, dark adsorption, reaction time and the improvement of biodegradability were studied. The combination of catalysts and ozonation reveals a significant improvement in the removal of contaminants present in wastewater by using the ozonation, adsorption or photocatalysis systems. Maximum dissolved organic carbon (DOC) removal of 91% was achieved by the combination of ozone, TiO2 and the UV-radiation system. But, an increase in biodegradability from 0.12 to 0.33 was realised with ozone and the TiO2 system. Furthermore, the biodegradability was increased with increasing catalyst concentration combined with ozone up to 1 g/L with TiO2 and 0.5 g/L with AC.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Egyptian Journal of Petroleum - Volume 21, Issue 1, June 2012, Pages 55–60
نویسندگان
,