ساخت جاذب سرامیکی نانو کامپوزیت اصلاح شده با کربن فعال حاصل از لاستیک های فرسوده برای جذب یون های فلزات سنگین
محورهای موضوعی : شیمی و مهندسی شیمی کلیه گرایش هامحمد طاهر شفیعی سیف آبادی 1 , نادر مختاریان 2 , نبیه فرهامی 3 , علی آقابابایی بنی 4 *
1 - گروه مهندسی شیمی، دانشکده فنی و مهندسی، واحد شهرضا، دانشگاه آزاد اسلامی، شهرضا، ایران
2 - گروه مهندسی شیمی، دانشکده فنی و مهندسی، واحد شهرضا، دانشگاه آزاد اسلامی، شهرضا، ایران
3 - گروه شیمی، واحد ماهشهر، دانشگاه آزاد اسلامی، ماهشهر، ایران
4 - گروه مهندسی شیمی، دانشکده فنی و مهندسی، واحدشهرکرد، دانشگاه آزاد اسلامی،شهرکرد، ایران
کلید واژه: جذب سطحی, یون های فلزات سنگین, پساب, سرامیک نانوکامپوزیت, خاک رس, کربن فعال,
چکیده مقاله :
با توجه به افزایش آلودگی محیط زیست ناشی از پساب‌های حاوی یون‌های فلزات سنگین، این مطالعه به طراحی و ساخت جاذب نانوکامپوزیتی با هدف جذب پایدار یون‌های سرب و کادمیوم از پساب پرداخته است. در این تحقیق، از خاک رس به‌عنوان ماده اولیه جاذب و کربن فعال حاصل از لاستیک فرسوده برای اصلاح سرامیک استفاده شد. مشخصات فیزیکوشیمیایی نانوکامپوزیت با استفاده از FTIR، XRD، BET و FESEM بررسی شد. آزمایشات جذب با پساب حاوی سرب و کادمیوم در یک تجهیز بستر ثابت با بررسی تاثیر عوامل مختلف مانند pH، دما، دوز جاذب، غلظت یون‌های فلزات سنگین و زمان ماند بهینه‌سازی شد. شرایط بهینه برای فرآیند جذب شامل pH 6، دمای 33، غلظت اولیه mg/L 104.2 ، جرم جاذب 170 گرم و زمان ماند 101 دقیقه به‌دست آمد. همچنین، مدل‌های سینتیکی و ایزوترم جذب برای تحلیل فرآیند جذب استفاده شد.
Given the increasing environmental pollution caused by wastewater containing heavy metal ions, this study focuses on the design and construction of a nanocomposite adsorbent for the sustainable adsorption of lead and cadmium ions from wastewater. In this research, clay was used as the primary material for the adsorbent, and activated carbon derived from waste tires was employed to modify the ceramic. The physicochemical properties of the nanocomposite were characterized using FTIR, XRD, BET, and FESEM techniques. Adsorption experiments were conducted with wastewater containing lead and cadmium ions in a fixed-bed reactor, investigating the effect of various factors such as pH, temperature, adsorbent dosage, heavy metal ion concentration, and contact time for optimization. The optimal conditions for the adsorption process were found to be pH 6, temperature 33°C, initial concentration of 104.2 mg/L, adsorbent mass of 170 g, and a contact time of 101 min. Kinetic models and adsorption isotherms were used to analyze the adsorption process.
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