تعیین پارامترهای بهینه در حذف فنل با استفاده از پر شترمرغ پاکسازی شده با پراکسیدهیدروژن

نوع مقاله: مقاله پژوهشی

نویسندگان

1 استادیار گروه مهندسی بهداشت محیط، دانشگاه علوم پزشکی شهید بهشتی، تهران

2 دانشیار گروه مهندسی بهداشت محیط، دانشگاه علوم پزشکی شهید بهشتی، تهران

3 عضو هیئت علمی گروه مهندسی بهداشت محیط، دانشگاه علوم پزشکی البرز، کرج

چکیده

حضور فنل در آب و فاضلاب به‌دلیل سمیّت و تهدیدی که برای زندگی انسان و محیط دارد یک نگرانی عمده محسوب می‌گردد. در این مطالعه از پرشترمرغ به‌عنوان یک جاذب جدید برای حذف فنل در وزن‌های 0/2، 0/3، 0/5، 0/7، 1 و 1/5 گرم استفاده شد و تغییرات اثر زمان،pH، مقدارجاذب و دما در حین فرایند حذف و همچنین تبعیت فرایند جذب از معادلات فروندلیچ و لانگمیر مورد بررسی قرار گرفت. برای تجزیه و تحلیل داده‌ها از نرم‌افزار Excel استفاده شد. نتایج حاکی از آن است که با افزایش مقدار جاذب از 0/2 تا 0/7 گرم میزان جذب افزایش می‌یابد. همچنین مشاهده شد که جذب فنل با افزایش pH محلول کاهش می‌یابد و افزایش زمان تماس، تأثیر ویژه‌ای (70درصد) در میزان جذب دارد. همچنین موازنه جذب به‌خوبی توسط ایزوترم‌های جذب فروندلیچ و لانگمیر نمایش داده شدند. نتایج نشان می‌دهند که پر شترمرغ به‌عنوان یک ماده زائد در کشتارگاهها، می‌تواند یک جاذب زیستی مؤثر برای حذف فنل به‌شمار رود.

کلیدواژه‌ها


عنوان مقاله [English]

Determination of the Optimum Parameters of Phenol Removal by Ostrich Feathers and Hydrogen Peroxide

نویسندگان [English]

  • Mohammad Manshouri 1
  • Ahmadreza Yazdanbakhsh 2
  • Hasti Daraei 3
1 Assist. Prof., of Environmental Sciences, Faculty of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
2 Assoc. Prof., of Environmental Sciences, Faculty of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
3 Faculty Member of Environmental Health Eng., Alborz University of Medical Science, Karaj
چکیده [English]

The presence of phenol and its derivatives in water and wastewater are of major concern because of their toxicity and threat to human life and environment. In this study, ostrich feather has been used as a new adsorbent in removal of phenol in different doses of 0.2, 0.3, 0.5, 0.7, 1 and 1.5 g and the effects of changing contact time, pH, adsorbent dose and temperature has been determined. Then, the adsorption data were described with Langmuir and Freundlich adsorption isotherms and Excel software for analyzing the data was used. The results obtained revealed that by increasing the dosage of the sorbent from 0.2 to 0.7 g the adsorption increases. The adsorption of phenol decreases by the increase of the pH value of the solution. Also, it is observed that the contact time significantly affect the rate of phenol adsorption (70%) from solution. The adsorption equilibrium was well represented by the Freundlich and Langmuir adsorption isotherms. The results showed that the ostrich feathers, a solid waste produced in poultry processing plant, can be used as an effective biosorbent for removal phenol in aaqueous solution.

کلیدواژه‌ها [English]

  • ostrich feather
  • Biosorbent
  • optimal
  • Isotherm
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