مجله آب و فاضلاب

مجله آب و فاضلاب

حذف داروی تتراسایکلین از محیط‌های آبی با استفاده از فتوکاتالیست CTF-P واجد ساختار آلی-کووالانسی تحت نور مرئی

نوع مقاله : مقاله پژوهشی

نویسندگان
محمد بشر 1
سهیل سبحان اردکانی 2
مهرداد چراغی 2
بهاره لرستانی 2
بهزاد شاهمرادی 3
1 دانشجوی دکترای تخصصی مهندسی محیط‌زیست، دانشکده فنی و مهندسی، واحد همدان، دانشگاه آزاد اسلامی، همدان، ایران
2 استاد، گروه محیط‌زیست، دانشکده علوم پایه، واحد همدان، دانشگاه آزاد اسلامی، همدان، ایران
3 استاد، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی کردستان، سنندج، ایران
10.22093/wwj.2025.500893.3460
چکیده
تتراسایکلین یکی از آنتی‌بیوتیک‌های تجاری رایج است که به‌دلیل پایداری شیمیایی بالا در برابر باکتری‌ها و طیف گسترده‌ای از میکروارگانیسم‌ها استفاده می‌شود. حضور این آنتی‌بیوتیک در فاضلاب صنایع دارویی و پساب بیمارستانی باعث ایجاد بوی نامطبوع، اختلالات پوستی و مقاومت میکروبی در موجودات بیماری‌زا می‌شود و می‌تواند منجر به مرگ میکروارگانیسم‌های مؤثر در تصفیه فاضلاب شود و ازاین‌رو، تصفیه آن قبل از ورود به محیط‌زیست، اهمیت زیادی دارد. بنابراین، این پژوهش با هدف بررسی کارایی حذف داروی تتراسایکلین از محیط‌های آبی با استفاده از فتوکاتالیست با ساختار آلی-کووالانسی تحت نور مرئی انجام شد. در این پژوهش، ابتدا فتوکاتالسیت با ساختار آلی-کوالانسی به‌روش رفلاکس سنتز شد. ویژگی‌های فتوکاتالیست سنتز شده نیز با استفاده از آنالیزهای میکروسکوپ الکترونی عبوری، میکروسکوپ الکترونی روبشی، دستگاه پراش پرتوایکس، آنالیز نقشه‌برداری عنصری، طیف‌سنجی مادون‌قرمز فوریه، آنالیز جذب و واجذب نیتروژن و طیف‌سنجی بازتابی نفوذی شناسایی شدند. همچنین، اثر متغیرهای pH (معادل 4 تا 9)، غلظت فتوکاتالیست (mg10 تا 40) و زمان تماس (min (30-) تا 180) نیز بر کارایی حذف تتراسایکلین ارزیابی شد. یافته‌ها نشان داد که با افزایش زمان تماس تا min 90، غلظت فتوکاتالیست تا mg 30 و در pH برابر با 7، کارایی حذف تتراسایکلین افزایش یافته است. مطالعه اسکاونجرها نشان داد که اکسنده‌های ، e- و  نقش قابل‌توجهی در فرایند تخریب داروی تتراسایکلین از محلول آبی توسط CTF-P داشته‌اند. نتایج نشان داد پلیمر با ساختار آلی-کوالانسی می‌تواند به‌عنوان یک فتوکاتالیست مؤثر و در دسترس برای حذف تتراسایکلین از پساب‌های صنعتی تحت نور مرئی استفاده شود.
کلیدواژه‌ها
تتراسایکلین
ساختار آلی-کوالانسی
فتوکاتالیست
محلول آبی
نور مرئی

عنوان مقاله English

Removal of Tetracycline from Aqueous Environments Using CTF-P Photocatalyst with Organic-Covalent Structure under Visible Light

نویسندگان English

Mohammad Bashar 1
Soheil Sobhan Ardakani 2
Mehrdad Cheraghi 2
Bahareh Lorestani 2
Behzad Shahmoradi 3
1 PhD. Candidate, Dept. of the Environmental Engineering, College of Engineering, Hamedan Branch, Islamic Azad University, Hamedan, Iran
2 Prof., Dept. of the Environment, College of Basic Sciences, Hamedan Branch, Islamic Azad University, Hamedan, Iran
3 Prof., Dept. of Environmental Health Engineering, Faculty of Health, Kurdistan University of Medical Sciences, Sanandaj, Iran
چکیده English

Tetracycline is a common commercial antibiotic that is used in large quantities against bacteria and a wide range of microorganisms. The presence of TC in pharmaceutical industries and hospital wastewater can cause an unpleasant odor, skin disorders, and microbial resistance in pathogenic agents, and can lead to the death of effective microorganisms responsible for purifying wastewater. Therefore, its removal before entering into the environment is of great importance. Given the importance of the issue, this study evaluates the efficiency of TC removal from aqueous environments using a photocatalyst with an organic-covalent structure under visible light. In this study, a photocatalyst with an organic-covalent structure (CTF-P) was synthesized by reflux method and its efficiency was investigated. To identify the synthetic photocatalyst characterization, transmission electron microscopy, scanning electron microscopy, X-ray diffraction, elemental mapping analysis (EDX-Mapping), Fourier transform infrared spectroscopy, nitrogen adsorption-desorption analysis (BET) and diffuse reflectance spectroscopy were employed. Moreover, the effects of pH variables (4-9), photocatalyst concentration (10-40 mg) and contact time ((-30)-180 min) on the removal process were evaluated. Based on the results obtained, maximum removal efficiency was achieved at a 90 min contact time, 30 mg of photocatalyst content, and pH=7. The study of scavengers showed that the oxidants (i.e. , e- and ) play an important role in the degradation process of TC from wastewater. As shown, CTF-P photocatalyst with organic-covalent structure could be used as an effective material for the removal of TC from industrial wastewater under visible light.

کلیدواژه‌ها English

Tetracycline
Organic-Covalent Structure
Aqueous Solution
Photocatalyst
Visible Light
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