کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6609805 | 459548 | 2015 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhancement of oxygen diffusion process on a rotating disk electrode for the electro-Fenton degradation of tetracycline
ترجمه فارسی عنوان
افزایش فرآیند انتشار اکسیژن بر روی یک الکترود دیسک چرخشی برای تخریب الکترو فنتون تتراسایکلین
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
الکترو فنتون، الکترو دیسک چرخان، تتراسایکلین، حمل اکسیژن، معدنی شدن،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
An electro-Fenton process was developed for wastewater treatment in which hydrogen peroxide was generated in situ with a rotating graphite disk electrode as cathode. The maximum H2O2 generation rate for the RDE reached 0.90Â mg/L/h/cm2 under the rotation speed of 400Â rpm at pH 3, and â0.8Â V vs SCE. The performance of this electro-Fenton reactor was assessed by tetracycline degradation in an aqueous solution. Experimental results showed the rotation of disk cathode resulted in the efficient production of H2O2 without oxygen aeration, and excellent ability for degrading organic pollutants compared to the electro-Fenton system with fixed cathode. Tetracycline of 50Â mg/L was degraded completely within 2Â h with the addition of ferrous ion (1.0Â mM). The chronoamperometry analysis was employed to investigate the oxygen diffusion on the rotating cathode. The results demonstrated that the diffusion coefficients of dissolved oxygen is 19.45Â ÃÂ 10â5Â cm2/s, which is greater than that reported in the literature. Further calculation indicated that oxygen is able to diffuse through the film on the rotating cathode within the contact time in each circle. This study proves that enhancement of oxygen diffusion on RDE is benefit for H2O2 generation, thus provides a promising method for organic pollutants degradation by the combination of RDE with electro-Fenton reactor and offers a new insight on the oxygen transform process in this new system.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 182, 10 November 2015, Pages 73-80
Journal: Electrochimica Acta - Volume 182, 10 November 2015, Pages 73-80
نویسندگان
Yan Zhang, Ming-Ming Gao, Xin-Hua Wang, Shu-Guang Wang, Rui-Ting Liu,