تصفیۀ فاضلاب پالایشگاه نفت بااستفاده از نانو فتوکاتالیست جدید Fe-ZSM-5@TiO2/Ag

مهندسی عمران فردوسی

دوره 34، شماره 2 - شماره پیاپی 34، خرداد 1400، صفحه 71-86   

نوع مقاله: مقاله پژوهشی

شناسه دیجیتال (DOI): 10.22067/jfcei.2021.68412.1011

نویسندگان

محمد دلنواز^* ؛ کیارش اسحقی

دانشکده فنی و مهندسی، گروه مهندسی عمران، دانشگاه خوارزمی، تهران

چکیده

فاضلاب نفتی حاوی طیف وسیعی از آلاینده­های سخت تجزیه‌پذیر است که با روش­های متداول تصفیه نمی­شود. در این مطالعه حذف فتوکاتالیستی آلاینده­های آلی موجود در فاضلاب واقعی پالایشگاه نفت بااستفاده از نانو فتوکاتالیست سنتزی Fe-ZSM-5@TiO₂/Ag مورد برسی قرار گرفته‌است. برای سنتز نانو فتوکاتالیست ابتدا آهن به‌منظور ارتقای ساختار زئولیت بر­روی ZSM-5  تثبیت شد و سپس تیتانیوم و نقره به‌منظور کاهش شکاف انرژی برروی آن پوشش یافت و مشخصات فیزیکی و شیمیایی آن توسط آنالیزهای XRD، SEM، FT-IR و BET تعیین شد. رویۀ انجام آزمایش­های تصفیۀ فاضلاب پالایشگاه نفت بااستفاده از طراحی آزمایش به‌روش پاسخ سطح (RSM) انجام شد. برای بررسی پارامترهای تأثیرگذار، اثر غلظت آلاینده، غلظت نانوذرات فتوکاتالیست، pH، زمان واکنش، طول موج تابش و فتوکاتالیست­های مختلف در یک پایلوت ناپیوسته انجام شد. نتایج نشان داد که در pH برابر با 5 و غلظت فتوکاتالیست Fe-ZSM-5@TiO₂/Ag برابر با 2 گرم بر لیتر و تحت تابش نور UV-A به شدت 54 وات و زمان 240 دقیقه بهترین عملکرد حذف COD در حدود 83 درصد به‌دست می­آید.
 

کلیدواژه‌ها

نانو فتوکاتالیست؛ زئولیت؛ لامپ UV؛ فاضلاب نفتی

سایر فایل های مرتبط با مقاله

5-delnavaz.pdf

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