نشریه محیط زیست طبیعی

مدل‌سازی حذف آنتی بیوتیک اکسی تتراسایکلین با استفاده از نانولوله‌های کربنی عامل‌دار شده با گروه آمین؛ استفاده از روش سطح پاسخ

نوع مقاله : مقاله پژوهشی

نویسنده

گروه علوم و مهندسی محیط زیست، دانشکده کشاورزی و محیط زیست، دانشگاه اراک، ایران

چکیده

حضور ترکیبات دارویی در محیط‌زیست تهدیدی جدی برای بشر تلقی می ­شود و ورود این مواد به منابع آبی، سبب آلودگی گیاهان، خاک و جانوران شده و مشکلاتی را برای بهداشت عمومی ایجاد می­ کند، این امر تأمین تسهیلات تصفیة فاضلاب در منابع تولید این مواد را ضروری می ­نماید تا از رها شدن بی­ رویة آن­ها در محیط‌زیست جلوگیری به‌عمل آید. از این ­رو، استفاده از نانو جاذب ­ها، روشی نوین با کارایی بالا جهت حذف آنتی­ بیوتیک ­ها از محیط­ های آبی است. نانولوله ­کربنی به‌دلیل خاصیت منحصر به فرد خود، از جمله موادی است که می­ توان جهت حذف آنتی ­بیوتیک ­ها از آن استفاده کرد. در این مطالعه، نانو جاذب از نانولوله­ های ­کربنی تهیه شده و سپس به روش حلال گرمایی، مغناطیسی شد و با گروه آمین اتیلن ­دی­ آمین عامل ­دار گردید. آنالیز­های وزن‌سنجی حرارتی، عنصری، طیف‌سنجی مادون قرمز تبدیل فوریه و آنالیز تعیین قدرت مغناطیسی به‌منظور تشخیص و بررسی ویژگی­ های نانوجاذب سنتز شده صورت پذیرفت. سپس این نانوکامپوزیت برای حذف آنتی‌بیوتیک­ اکسی تتراسایکلین از محلول­ های آبی در سیستم ناپیوسته مورد مطالعه قرار گرفت. عوامل مؤثر بر میزان جذب مانند pH، مقدار جاذب، زمان تماس و غلظت اولیة آنتی ­بیوتیک­ مورد بررسی قرار گرفت. نتایج نشان داد بیشترین ظرفیت جذب تعادلی برای آنتی ­بیوتیک­ مورد مطالعه 122/8 میلی ­گرم بر گرم است. همچنین نانوجاذب سنتز شده در این تحقیق از ظرفیت جذب نسبتاً بالایی برای جذب آنتی­ بیوتیک­ اکسی تتراسایکلین برخوردار و استفاده از این جاذب در سیستم تصفیة پساب از نظر محیط­زیستی توجیه ­پذیر می­ باشد.

کلیدواژه‌ها

عنوان مقاله [English]

Modeling the removal of the Oxytetracycline antibiotic using Amine-functionalized multi-walled carbon nanotubes; Use of the response surface methodology

نویسنده [English]

  • Ali Kazemi

Department of Environmental Science and Engineering, Faculty of Agriculture and Environment, Arak University, Arak, Iran

چکیده [English]

The presence of drug compounds in the environment is considered to be a serious threat to mankind and the entry of these substances into water resources leads to contamination of plants, soil and animals and creates problems for public health, which provides sewage treatment facilities in production resources It makes this material necessary to prevent them from releasing them in the environment. Hence, the use of nano-adsorbents is a novel high-performance method for removing antibiotics from aqueous media. Because of its unique properties, Multi-walled carbon nanotube (MWCNT) is one of the substances that can be used to remove antibiotics. In this study, MWCNT was synthesized and then became magnetic by magnetic thermal solvent method and was functionalized with the ethylenediamine amine group. The synthesized nanocomposite was characterized by Fourier Transform Infrared spectroscopy, vibrating sample magnetometry, thermal gravimetric analysis and CHNS elemental analysis. The nanocomposite was used for removal of Oxytetracycline (OTC) antibiotic from aqueous solution in batch system. The effect of various factors, such as pH, dosage of Magnetic MWCNT, contact time and initial concentration of antibiotic were investigated. The maximum equilibrium adsorption capacity for Oxytetracycline removal was 122.8 mg/g. The results showed that the synthesized nanocomposite in this research has a relatively high adsorption capacity for Oxytetracycline adsorption and the application of this adsorbent in wastewater treatment system could be reasonable in terms of the economic aspect. 

کلیدواژه‌ها [English]

  • Antibiotic removal
  • Oxytetracycline
  • magnetic multi-walled carbon nanotube
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نشریه محیط زیست طبیعی
دوره 75، شماره 1
خرداد 1401
صفحه 64-76