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جذب سطحی رقابتی سه یون فلزی کروم، سرب و جیوه در محلول‌های آبی بر روی کربن فعال مغناطیسی تهیه شده از هسته هلو | ||
| نشریه علوم و مهندسی جداسازی | ||
| مقاله 7، دوره 11، شماره 1، تیر 1398، صفحه 76-88 اصل مقاله (1.12 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22103/jsse.2019.2245 | ||
| نویسندگان | ||
| محمدحسین فاتحی دهاقانی* 1؛ محمد ذبیحی2؛ جلال الدین شایگان1 | ||
| 1دانشگاه صنعتی شریف، دانشکده مهندسی شیمی و نفت، تهران، ایران | ||
| 2دانشگاه صنعتی سهند، دانشکده مهندسی شیمی، تبریز، ایران | ||
| چکیده | ||
| هدف از پروژه حاضر سنتز یک نانو جاذب مغناطیسی عامل‌دار با استفاده از کربن فعال تهیه شده از هسته هلو با بکارگیری روش هم‌رسوبی برای حذف همزمان یون فلزات سنگین از محلول آبی است. آنالیزهای مختلفی شامل بوهم، پراش اشعه ایکس، سطح فعال، میکروسکوپ الکترونی روبشی، طیفنگاری فلورسانس پرتو ایکس و مغناطیس‌سنج ارتعاشی برای تعیین ساختار سطحی نانو جاذب سنتز شده مورد مطالعه قرار گرفتند. نتایج نشان داد که نانو جاذب مغناطیسی با توزیع مناسب کریستالهای اکسید آهن با اندازه 20 نانومتر بر روی سطح کربن فعال به صورت کروی با سطح فعال 325 مترمربع بر گرم شکل گرفته است. داده‌های آزمایشگاهی طراحی شده با روش پاسخ سطح، نشان داد که دمای جذب و قلیاییت محیط دارای اثر همافزایی در مقدار جذب رقابتی یون‌های سرب، کروم و جیوه در فاز مایع هستند. حداکثر درصد حذف یون جیوه، کروم و سرب به ترتیب 91/5، 62/05 و 82/7 در شرایط بهینه محاسبه شد. | ||
| کلیدواژه‌ها | ||
| کربن فعال مغناطیسی هسته هلو؛ جذب سطحی؛ سرب؛ کروم؛ جیوه | ||
| مراجع | ||
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