کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
221970 464268 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Kinetic studies of β-blocker photodegradation on TiO2
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Kinetic studies of β-blocker photodegradation on TiO2
چکیده انگلیسی

The present work involves the photocatalytic degradation of common β-blocker (acebutolol) on a re-circulating spiral photo-reactor in presence of TiO2 under UV radiation (λ = 365 nm). The effects of the initial concentration of acebutolol (5–30 mg/L), TiO2 dose (0.15–0.6 g/L), solution pH (4.8–10), UV lamp position (3–20 cm) and flow rate of the solution (140–525 mL/min) on the photodegradation are examined. It is found that the degradation rate of acebutolol decreases with decreasing the initial substrate concentration. The optimal pH of the acebutolol elimination is 7.1 and the photodegradation rate increases with raising the dose of TiO2. At high doses, the reaction is inhibited as a result of the light attenuation and shadowing effect. The increase of re-circulating speed leads to a decrease of the degradation rate. Under the operating conditions, the acebutolol photodegradation follows a pseudo-first-order kinetic and the Langmuir–Hinshelwood model is successfully used to fit the experimental data.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Chemical Engineering - Volume 2, Issue 3, September 2014, Pages 1371–1377
نویسندگان
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