اثر ضد باکتریایی نانو ذرات اکسید آهن (Fe3O4) در تصفیه آب

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانش‌آموخته دکترای بهداشت مواد غذایی، گروه بهداشت مواد غذایی، واحد تبریز، دانشگاه آزاد اسلامی، تبریز، ایران

2 دانشیار گروه بهداشت مواد غذایی، واحد تبریز، دانشگاه آزاد اسلامی، تبریز، ایران

3 دانشیار گروه مهندسی شیمی، دانشگاه صنعتی سهند، تبریز، ایران

4 استادیار گروه میکروب‌شناسی، دانشگاه علوم پزشکی تبریز، تبریز، ایران

چکیده

در برنامه‌های کاربردی آب سیستم­های نامناسب زهکشی سبب افزایش آلودگی منابع آب می­شود این مطالعه باهدف یافتن ضدعفونی‌کننده سازگار با محیط‌زیست در مرحله منعقد سازی در تصفیه‌خانه‌های آب آشامیدنی انجام‌شده است. در این مطالعه نانو ذرات اکسید آهن به روش هم رسوبی سنتز گردید و فعالیت ضد باکتریایی نانو ذرات اکسید آهن سنتز شده بر روی شش گونه از باکتری‌های مهم باکتریایی (شامل اشرشیا کولای و انتروکوکوس فیکالیس و کلبسیلا پنومونیه و سودوموناس آئروجینوزا، باسیلوس سرئوس و استافیلوکوکوس اورئوس) مورد ارزیابی قرار گرفت. این مطالعه نشان داد که بیشترین اثر نانو ذرات اکسید آهن سنتز شده با 07/0 MIC<میکروگرم بر میلی‌لیتر در برابر باسیلوس سرئوس و انتروکوکوس فیکالیس است. بعلاوه، نانو ذرات اکسید آهن دارای فعالیت ضد باکتریایی علیه استافیلوکوکوس آرئوس با 3/0 =MIC میکروگرم در میلی‌لیتر و در کلبسیلا پنومونیه 25/1MIC=  و سودوموناس آئروجینوزا و اشرشیاکلی 6/0 =MIC میکروگرم در میلی‌لیتر بود. نتایج MBC نشان داد که نانو ذرات اکسید آهن توانست 9/99 درصد از باکتری­های اشرشیاکلی و استافیلوکوکوس آرئوس در غلظت 25/1 میکروگرم در میلی‌لیتر و کلبسیلا پنومونیه در غلظت 5/2 میکروگرم در میلی‌لیتر از باکتری‌های را از بین ببرد. نتایج به‌دست‌آمده پتانسیل ضد باکتریایی از نانو ذرات را برای استفاده در تصفیه آب نشان می‌دهد. به نظر می‌رسد که استفاده از نانو ذرات Fe3O4 به‌عنوان جاذب در فرآیند تصفیه آب می‌تواند یک جایگزین کارآمد و اقتصادی برای ضدعفونی کردن آب در مراحل اولیه تصفیه آب باشد.

کلیدواژه‌ها


عنوان مقاله [English]

Antibacterial effect of iron oxide nanoparticles (Fe3O4) in water treatment

نویسندگان [English]

  • N. Shabani 1
  • A. Javadi 2
  • H. Jafarizadeh-Malmiri 3
  • H. Mirzaei 2
  • J. Sadeghi 4
1 Graduated of Food hygiene, Tabriz Branch, Islamic Azad University, Tabriz, Iran
2 Associate Professor, Faculty of Veterinary Medicine, Tabriz Branch, Islamic Azad University, Tabriz, Iran
3 Associate Professor, Faculty of Chemical Engineering, Sahand University of Technology, Tabriz, Iran
4 Associate Professor, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
چکیده [English]

In water applications, improper drainage systems increase the pollution of water resources. This study aimed to find an eco-friendly water disinfectant in the coagulation stage of drinking water treatment plants. In this study, iron oxide nanoparticles were synthesized by the co-precipitation method. The antibacterial activity of iron oxide nanoparticles was assessed on six important water-polluting bacteria (Escherichia coliEnterococcus faecalis, Klebsiella pneumoniaePseudomonas aeruginosaBacillus cereus, and Staphylococcus aureus). The results showed that the highest effect of synthesized iron oxide nanoparticles with MIC< 0.07 μg/ml is against B. cereus and E. faecalis. In addition, iron oxide nanoparticles had antibacterial activity against Staphylococcus aureus with MIC= 0.3 μg/ml and in K. pneumoniae with MIC= 1.25 and P. aeruginosa and E. coli with MIC= 0.6 μg/ml. MBC results showed that iron oxide nanoparticles were to eliminate 99.9% of E. coli and S. aureus bacteria at a concentration of 1.25 μg/ml and K. pneumoniae at a concentration of 2.5 μg/ml. The obtained results show the antibacterial potential of nanoparticles for use in water treatment. It seems that the use of Fe3O4 nanoparticles as adsorbents in the water treatment process can be an efficient and economical alternative to disinfect water in the early stages of water treatment.

کلیدواژه‌ها [English]

  • Antibacterial
  • Iron oxide nanoparticles
  • Water Treatment
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