نوع مقاله : مقاله پژوهشی کامل
نویسندگان
بخش شیمی، دانشگاه پیام نور، صندوق پستی 3697-19395 ، تهران، ایران
چکیده
نانوکامپوزیت مغناطیسی پلی آنیلین/ماگمیت (PANI/γ -Fe2O3 MNC) به عنوان یک واکنشگر فعال برای حذف سرب از محیطهای آبی استفاده شد. روش همرسوبی شیمیایی برای تهیه نانوذرات ماگمیت بکار رفت و به دنبال آن نانوکامپوزیت مغناطیسی از طریق پلیمریزاسیون آنیلین تهیه گردید. سطح آن توسط IR FT- مشخص گردید. راندمان این نانوکامپوزیت برای حذف سرب به روش ناپیوسته بررسی شد. نتایج نشان داد که شرایط بهینه برای حذف سرب در 6= pH، مقدار جاذب 04/0 گرم و زمان تماس 90 دقیقه رخ می دهد. سینتیک جذب مطالعه شد و با معادله سرعت مرتبه دوم مطابقت داشت. ایزوترمهای جذب بررسی گردیدند. مدل ایزوترم جذبی فروندلیچ تطابق بیشتری نسبت به لانگمویر داشت. مطالعات ترمودینامیکی دلالت برخودبخودی و گرماگیر بودن فرایند جذب سرب داشت.
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