تجزیه فتوکاتالیستی فنل به وسیله نانو ذرات روی اکسید تثبیت شده بر بستر بتنی

نوع مقاله: علمی-پژوهشی

نویسندگان

تهران، دانشگاه تربیت مدرس، دانشکده مهندسی عمران و محیط زیست

چکیده

فنل از جمله آلاینده ‌های خطرناک و سخت تجزیه پذیر است که حذف کامل آن به روش ‌های معمول امکان‌ پذیر نمی ‌باشد. در این پژوهش حذف فنل از فاز مایع به‌ وسیله فتوکاتالیست نانو روی اکسید مورد مطالعه قرار گرفت. از بتن به عنوان بستر تثبیت نانو ذرات استفاده شد و انرژی تابشی به‌وسیله لامپ UVتأمین شد. تاثیر پارامترها شامل غلظت ماده آلاینده، شدت تابش، مقدار ذرات ماده کاتالیست و pH  مورد مطالعه قرار گرفت. در شرایط بهینه غلظت اولیه فنل 50 میلی‌ گرم در لیتر فنل، میزان ماده کاتالیست برابر 80 گرم در متر مربع، pHبرابر 11 و توان منبع تابش لامپ UV  برابر 32 وات ، بازده حذف سامانه پس از گذشت 5 ساعت بیش از 90 درصد بود.

کلیدواژه‌ها

موضوعات


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