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سنتز و ارزیابی کارائی غشای اسمز معکوس با گرافن عامل دار شده | ||
نشریه علوم و مهندسی جداسازی | ||
مقاله 2، دوره 11، شماره 2، بهمن 1398، صفحه 11-18 اصل مقاله (852.33 K) | ||
نوع مقاله: مقاله پژوهشی | ||
شناسه دیجیتال (DOI): 10.22103/jsse.2019.2394 | ||
نویسندگان | ||
سجاد جلالی* 1؛ عبدالله رشیدی1؛ جلال الدین شایگان2؛ مریم میرابی1؛ سید سیاوش مدائنی3 | ||
1دانشگاه شهید بهشتی | ||
2استاد | ||
3دانشگاه رازی کرمانشاه | ||
چکیده | ||
رایجترین روش از بین فنآوریهای نمکزدایی، روش غشایی است. باوجود کاربرد زیاد روش یادشده، این شیوه دارای ضعفهایی مانند شار محدود و مقاومت کم در برابر کلر است. در این تحقیق، یکراه حل بر پایه استفاده از اکسید گرافن عاملدار شده با تیونیل کلراید(GO-OCl) در ساختار غشای پلیآمیدی پیشنهاد شده است. برای عملی کردن این ایده از یک روش جدید برای بهینهسازی تولید غشای حاوی GO-OCl استفاده شد. در گام اول طراحی آزمایشها با استفاده از روش طراحی مخلوط حددار (CMD) صورت پذیرفت. براساس آن سیزده ترکیب از سه ماده: تریمیسل کلرید، m-فنیلین دی آمین و GO-COCl انتخاب شد. سپس خصوصیاتی ازجمله دفع نمک، مقاومت در برابر کلر و شار اندازهگیری گردید. با استفاده از روش بهینهسازی چند متغیره با بهینه کردن سه پارامتر یادشده، غلظت بهینه به دست آمد و متعاقباً غشای متناظر با آن ساخته شد. از مقایسه عملکرد غشای بهینه ساختهشده، با غشاء پلیآمیدی، مشخص شد که شار عبوری آب 6/50 درصد افزایش، دفع نمک 3 درصد کاهش و مقاومت در برابر اکسیداسیون کلر91/4 درصد افزایش داشته است. | ||
کلیدواژهها | ||
غشای پلی آمیدی؛ مقاومت در برابر کلر؛ افزایش شار | ||
مراجع | ||
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