بررسی ‌کارایی ‌نانو ذرات آهن صفر‌(nZVI) در حذف سفالکسین‌ از‌ پساب‌ دارویی

نوع مقاله: مقاله پژوهشی

نویسندگان

1 استادیار، دانشکده محیط زیست و انرژی، دانشگاه آزاد اسلامی، واحد علوم تحقیقات تهران

2 استاد گروه مهندسی محیط زیست، دانشکده محیط زیست، دانشگاه تهران

3 دانشجوی کارشناسی ارشد مهندسی محیط زیست- آب و فاضلاب، دانشکده محیط زیست و انرژی، دانشگاه آزاد اسلامی واحد علوم تحقیقات تهران

چکیده

‌ورود آنتی‌بیوتیک‌ها به فاضلاب، تصفیه آن را مشکل‌تر می‌سازد. میزان استفاده‌ آنتی بیوتیک‌ها به‌خصوص سفالکسین به‌صورت معمول بالا است و مقدار ‌آن در ‌پسابهای دارویی بیشتر ‌است. لذا در این تحقیق میزان حذف شیمیایی آنتی‌بیوتیک سفالکسین توسط نانو ذرات آهن صفر، همچنین تأثیر پارامترهایی از جمله غلظت‌های اولیه محلول آنتی‌بیوتیک، pH، مقادیر مختلف نانو ذرات آهن و زمان بر روی میزان حذف مورد بررسی قرار گرفت. سنتز ‌نانو ‌ذرات ‌آهن به‌صورت‌ روزانه صورت گرفت. محلول مادر ‌با غلظت 100میلی‌گرم در لیتر ‌از ‌سفالکسین ساخته شد. سپس‌ از محلول مادر، محلول‌های‌آنتی‌‌بیوتیک با ‌غلظتهای متفاوت تهیه شد و با مقادیر مختلف نانو ‌ذره ‌آهن تماس داده ‌شد و سپس‌ غلظت نهایی‌ آنتی بیوتیک‌ها در هر نمونه توسط دستگاه HPLC اندازه‌گیری شد. بر اساس نتایج با افزایش غلظت سفالکسین به ppm100، با زمان تعادل‌10‌دقیقه، در حضور 8/0 گرم نانو ذره ‌آهن و pH معادل 5، 52‌ درصد حذف اتفاق ‌افتاد.

کلیدواژه‌ها


عنوان مقاله [English]

Performance of Iron-Zero (nZVI) Nanno Particles in Removal of Cephalexin from Synthetic Wastewater

نویسندگان [English]

  • Amir Hessam Hassani 1
  • Ali Torabian 2
  • khadijeh rahimi 3
چکیده [English]

Existence of antibiotic in wastewater causes wastewater treatment more difficult. The amount of antibiotic consumption, especially Cephalexin, is considerable so that it concentration in pharmaceutical wastewater is usually high. This study attempts to determine the efficiency removal of Cephalexin by iron nanoparticles from synthetic wastewater. Moreover, the effect of operating parameters such as initial concentrations of Cephalexin, pH, amount of iron nanoparticles and detention time on removal efficiency are investigated and the optimum operating range for each of these operating variables is experimentally determined. The preparation of iron nanoparticles were carried out daily. Samples were prepared with different concentration from a stock solution with 100 mg/L Cephalexin concentration. Cephalexin concentration in each experiment was determined by HPLC method. The results showed that the removal efficiency of Cephalexin in the optimal condition (initial Cephalexin concentration, of 100ppm; detention time, of 10min; iron nanoparticles amount, of 0.8gr; pH, of 5) about 52%.

کلیدواژه‌ها [English]

  • Iron nanoparticles
  • Adsorption
  • Chemical Oxidation
  • Cephalexin

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