بررسی کارایی اکسید گرافن در جذب سطحی 2-کلروفنل از محلول‌های آبی به عنوان یک آلاینده محیط زیست
محورهای موضوعی : ارزیابی خطرات آلاینده ها بر روی محیط زیست
1 - دانشیار گروه شیمی، واحد اهر، دانشگاه آزاد اسلامی، اهر، ایران
کلید واژه: ۲-کلروفنل, جذب سطحی, اکسید گرافن, پارامترهای عملیاتی,
چکیده مقاله :
در این مقاله، از اکسید گرافن برای حذف ۲-کلروفنل از محلول‌های آبی به روش جذب سطحی استفاده شد. به این منظور اثر پارامترهای مختلف از جمله غلظت اولیه ۲-کلروفنل، زمان تماس، pH اولیه محلول و مقدار جاذب بر روی حذف آن مطالعه شد. نتایج نشان داد که فرایند جذب سطحی در ۵۰ دقیقه به تعادل می‌رسد و مقدار حذف ۲-کلروفنل با افزایش مقدار جاذب ابتدا افزایش و سپس کاهش می‌یابد. از طرفی با افزایش غلظت اولیه ۲-کلروفنل و pH، درصد حذف ۲-کلروفنل کاهش یافت. مطابق نتایجg/L 3/0 از اکسید گرافن قادر به حذف %76/78 از ۲-کلروفنل در غلظت اولیه mg/L 100 و در 2pH = است. بنابراین اکسید گرافن جاذب پرقدرتی برای حذف ترکیب سمی ۲- کلروفنل از محیطهای آبی می‌باشد.
The purpose of the present research was to evaluate the potential of graphene oxide as an adsorbent for removing 2-chlorophenol (2-CP) from aqueous solutions. For this purpose, the effects of various parameters, including the initial concentration of 2-CP, contact time, initial pH, and adsorbent dosage, were examined. The results showed that 2-CP adsorption reaches equilibrium within 50 min. An increase in 2-CP concentration and pH leads to a decrease in 2-CP removal efficiency. Additionally, increasing the adsorbent dosage initially enhanced the removal percentage of 2-CP, but further increases led to a decrease. Based on the findings, 0.3 g/L of graphene oxide can remove 78.76% of 2-CP at an initial concentration of 100 mg/L and pH of 2. Thus, graphene oxide is an effective adsorbent for removing 2-CP as a toxic compound from aqueous solutions.
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