جذب سطحی سولفات بر روی نانوذرات آهن بر بستر اکسید گرافن و کربن فعال

نوع مقاله: مقاله پژوهشی

نویسندگان

1 کارشناسی ارشد، گروه مهندسی شیمی، واحد ماهشهر، دانشگاه آزاد اسلامی، ماهشهر، ‌ایران

2 استادیار، گروه مهندسی شیمی، واحد ماهشهر، دانشگاه آزاد اسلامی، ماهشهر، ایران

چکیده

این مطالعه با هدف بررسی آزمایشگاهی حذف یون سولفات با استفاده از کامپوزیت نانوذرات آهن بر بستر اکسیدگرافن و کامپوزیت نانوذرات آهن بر بستر کربن فعال انجام شد. در این تحقیق سنتز اکسید گرافن توسط روش هامر انجام شد. در حین سنتز نانوذرات آهن، اکسید گرافن و کربن فعال به‌عنوان بستر به آن اضافه شد. اثر پارامترهای مختلف شامل مقدار گرم جاذب، pH و زمان تماس بر روی میزان جذب بررسی شد. همچنین مطالعات سینتیکی بر روی داده‌ها انجام شد. نتایج نشان داد که بیشترین درصد جذب توسط 06/0گرم جاذب در pH برابر 11 و بعد از 9 ساعت تماس محلول با جاذب برای نانوکامپوزیت آهن بر پایه اکسید گرافن و کربن فعال به‌ترتیب برابر با 84 درصد و 62 درصد بود. همچنین مشاهده شد که داده‌های آزمایشگاهی ظرفیت جذب بر حسب زمان متناسب با مدل سینتیکی شبه مرتبه دوم است. با ﺗﻮﺟﻪ ﺑﻪ نتایج ﺑﻪ‌دﺳﺖ آﻣﺪه، هر دو جاذب سنتز شده به‌عنوان جاذب‌های سازگار با محیط زیست، توانایی ﻣﻄﻠﻮﺑﯽ در حذف سولفات داشتند.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Sulfate Adsorption on Iron Nanocomposites on Graphene Oxide and Activated Carbon Beds

نویسندگان [English]

  • Rezvan Birooni 1
  • Masoumeh Mirzaei 2
1 MSc in Chemical Engineering, Faculty of Chemical Engineering, Islamic Azad University, Mahsharh Branch, Mahshahr, Iran
2 Ass. Prof. of Chemical Engineering, Faculty of Chemical Engineering, Islamic Azad University, Mahsharh Branch, Mahshahr, Iran
چکیده [English]

This study is an experimental investigation of sulfate removal efficiency using iron nanocomposites on graphene oxide and activated carbon beds. The graphene oxide used was synthesized according to the Hummer method during which process graphene oxide and activated carbon were added. The effects of various parameters including adsorbent content, pH, and contact time on adsorption were investigated. Furthermore, the data were subjected to kinetic studies. Results revealed that the highest absorption rates of 84% and 62% were achieved for iron on the graphene oxide and activated carbon beds, respectively, when 0.06 g of the adsorbent was used at pH =11 over a contact time of 9 hours. It was also found that the kinetic pseudo-second-order model best fit the data. Finally, the results indicated that the two environmentally-friendly adsorbents have a good potential for removing sulfate from aqueous solutions.

کلیدواژه‌ها [English]

  • Adsorption
  • Sulfate
  • Fe Nanocomposite
  • Grahene Oxide
  • Activated carbon
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