حذف پارانیتروفنل از محیط‌های آبی توسط فرایند -UV/S2O82 در یک فتوراکتور پیوسته: بهینه‌سازی به روش طراحی آزمایش تاگوچی
محورهای موضوعی : مطالعات آزمایشگاهی و میدانی در مورد اصلاح/کاهش آلودگی محیطی از طریق تکنیک های نوظهور
1 - گروه شیمی کاربردی، دانشکده شیمی، دانشگاه سمنان، سمنان، ایران
کلید واژه: فتوراكتور جريان پيوسته آنولار, پارانيتروفنل, طراحی تاگوچي, -UV/S2O82 ,
چکیده مقاله :
در اين کار تحقيقی حذف يك آلايندة آلی تحت عنوان پارانيتروفنل (PNP) با استفاده از فرآيند UV/S2O82-در يك فتوراكتور پيوسته آنولار مورد بررسی قرار گرفته و شرایط عملیاتی موثر در کارآیی فرایند به روش تاگوچی بهینه‌سازی شده است. با توجه به نتايج طراحي آزمايش به روش تاگوچي، شرايط بهينه برای غلظت اوليه PNP برابر با mg L-1 40، برای pH برابر با 3، براي غلظت S2O82- برابر با mM 18 و براي زمان اقامت برابر با min 24/17 مي‌باشد. در اين شرايط مقدار درصد حذف برابر با %98 مي‌باشد كه با مقدار تجربي آن يعني %95 مطابقت خوبي دارد. همچنین روش تاگوچی مؤثرترين پارامتر در حذف PNP را غلظت -S2O82 با سهم %43 نشان مي‌دهد.
The present research was an attempt to investigate the removal of an organic pollutant called p-nitrophenol (PNP) using the UV/S2O82- process in a continuous annular photoreactor in order to optimize the operating conditions effective in the efficiency of the process through the Taguchi method. According to the results of the Taguchi method, the optimal conditions for initial concentration of PNP was equal to 40 mg L-1 with pH equal to 3 and S2O82- concentration equal to 18 mM in a residence time of 17.24 min. In such conditions, the removal percentage is equal to 98%, which is in good agreement with its experimental value of 95%. Furthermore, the Taguchi method showed that the most effective parameter in the removal of PNP was the concentration of S2O82- with a contribution of 43%.
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