کارایی فرآیند اکسیداسیون فنتون در حذف رنگ رودآمین B‏ از محلول سنتتیک

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دکترای مهندسی محیط‌ زیست، دانشکده بهداشت، دانشگاه علوم پزشکی کرمانشاه

2 دکترای مهندسی محیط ‌زیست، مؤسسه آموزش عالی علمی کاربردی صنعت آب و برق، مجتمع عالی آموزشی، کرمانشاه

3 دانشجوی کارشناسی ارشد مهندسی آب و فاضلاب، مؤسسه آموزش عالی علمی کاربردی صنعت آب و برق، مجتمع عالی آموزشی، کرمانشاه

4 دانشجوی کارشناسی ارشد مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی کرمانشاه

5 دانش‌آموخته کارشناسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی کرمانشاه

چکیده

خطرات بهداشتی و محیط ‌زیستی از جمله مشکلات ناشی از دفع فاضلاب‌های حاوی مواد رنگزا است که به‌صورت خام یا با تصفیه نامناسب به محیط ‌زیست و به‌ویژه آب‌های پذیرنده وارد می‌شوند. روش‌های تصفیه متداول، کارایی مناسبی را برای حذف این ترکیبات ندارند. لذا محققان روش‌هایی که توانایی تجزیه این ترکیبات سمّی و یا سخت تجزیه‌پذیر را دارند، تحت عنوان فرایندهای اکسیداسیون پیشرفته از جمله فرایند فنتون، برای این نوع فاضلاب‌ها پیشنهاد نموده‌اند. در این پژوهش، به‌صورت تجربی- مداخله‌ای در مقیاس آزمایشگاهی، کارایی فرایند فنتون در حذف رنگ و COD مورد بررسی قرار گرفت. بررسی عوامل مؤثر در این فرایند (غلظت پراکسید هیدروژن، غلظت نمک آهن و زمان واکنش) در راکتورهای یک لیتری صورت گرفت. نتایج آزمایش نشان داد فرایند تحت شرایط: غلظت اولیه رود آمینB برابر 100 میلی‌گرم در لیتر، COD برابر 270 میلی‌گرم در لیتر، pH برابر3، غلظت آهن برابر 40 میلی‌گرم در لیتر و H2O2 برابر 200 میلی‌گرم در لیتر و زمان واکنش60 دقیقه، بهترین کارایی را در حذف رنگ و COD به‌ترتیب به میزان 58 درصد و 48 درصد از محلول آبی رودآمین B دارد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Efficiency of Fenton Oxidation in Rodamine B Removal from Synthetic Solutions

نویسندگان [English]

  • Seyyedalireza Mousavi 1
  • Parviz Mohamadi 2
  • seyyed mohamd Parastar 3
  • Mehdi Ghaebzadeh 4
  • Farideh Kamari 5
1 lecturer in health faculty
2 lecturer
4 student
5 researcher
چکیده [English]

Environmental and health hazards are regarded among the problems associated with the disposal of raw or undertreated wastewaters containing reactive dyes discharged into the environment, and especially into receiving waters. Conventional treatment methods lack the desirable efficiency in removing these compounds. For this type of wastewater, researchers, therefore, recommend methods, collectively called "advanced oxidation processes" such as the Fenton process, that are capable of removing toxic and non-biodegradable compounds. This experimental-intervention study was carried out on the laboratory scale to investigate the Rodamine B and COD removal efficiency of the Fenton oxidation process. The effects of such parameters as H2O2, Fe2+, and reaction time were investigated using a 1-L batch reactor. The results revealed that the process achieved a decolorization efficiency of 58% and a COD removal of 48% after 60 min of reaction time when the initial concentrations of Rodamine B, COD, Fe2+, and H2O2 in the influent were 100 mg/L, 270 mg/L, 40 mg/L, and 200 mg/L, respectively, at a constant pH level of 3.

کلیدواژه‌ها [English]

  • Advanced oxidation
  • Fenton Process
  • Hydrogen peroxide
  • Textile wastewater
  • Rodamine B
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