مطالعه اثر چند پارامتر سینتیکی و هیدرولیکی بر مدل سینتیکی تصفیه فتوکاتالیستی فنول و بهینه‌سازی هزینه تصفیه

نوع مقاله : پژوهشی

نویسندگان

1 کارشناسی ارشد مهندسی عمران، گرایش محیط‌زیست، دانشکده مهندسی عمران، دانشگاه صنعتی نوشیروانی بابل

2 استادیار دانشکده مهندسی عمران، گروه مهندسی محیط‌زیست، دانشگاه صنعتی نوشیروانی بابل

چکیده

فرایندهای فتوکاتالیستی یکی از روش‌های اکسیداسیون پیشرفته تصفیه فاضلاب­ها است و ارائه راهکاری برای کاهش هزینه‌های تصفیه از چالش‌های فعلی است. هزینه تصفیه فاضلاب به‌ سرعت تجزیه آلاینده بستگی دارد و پارامترهای سینتیکی شاخصه اصلی سرعت تجزیه آلاینده در فرایند­های فتوکاتالیستی است. پارامترهای سینتیکی فرایند فتوکاتالیستی به عوامل متعددی بستگی دارد. از عوامل مؤثر بر پارامترهای سینتیکی فرایند فتوکاتالیستی، پارامترهای هیدرولیکی و خصوصیات فیزیکی فتوراکتورهای مورد استفاده است که در این تحقیق برای نخستین بار اثر پارامترهای هیدرولیکی و خصوصیات فیزیکی فتوراکتور پلکانی بر راندمان حذف آلاینده فنول هنگام استفاده از نانوذره TiO2 بررسی شده است. متغیر مستقل شدت هوادهی، غلظت اولیه آلاینده، دبی جریان، pH، شیب و ارتفاع پله در راکتور پلکانی مورد بررسی قرار گرفتند و راندمان حذف آلاینده فنول در حالات مختلف به‌دقت آمد. بر اساس راندمان حاصل و با کمک روش دیفرانسیلی مرتبه واکنش و ثابت سینتیک تجزیه متغیرهای مستقل به‌دست آمد.

کلیدواژه‌ها


عنوان مقاله [English]

Effect of Hydraulic Parameters on Kinetic Model of PHenol PHotocatalytic Treatment and Optimization of Treatment Cost

نویسندگان [English]

  • Fatemeh Azizpour 1
  • FARHAD Qaderi 2
1 Babol Noshirvani University of Technology, Babol, Iran
2 Babol Noshirvani University of Technology, Babol, Iran
چکیده [English]

The pHotocatalytic process is one of the most used chemical process in wastewater treatment. Proposing a method for decreasing treatment cost is one of current challenges in this field. The cost of wastewater treatment depends on the pollutant degradation rate. The kinetic parameters are the main indicators of the pollutant degradation pace in the pHotocatalytic processes; and the kinetic parameters of the pHotocatalytic process depend on various factors. Factors affecting the kinetic parameters of a pHotocatalytic process include hydraulic parameters and the pHysical properties of the pHotoreactor, that for the first time, those effects were investigated in this research. Titanium Dioxide was used for the pHotocatalytic process. The independent variables of pollutant initial concentration, flow rate, pH in the step pHotoreactors with different pHysical properties (slope and step heights) were studied. The differential method were used in this research for determining the kinetic parameters based on the laboratory data.

کلیدواژه‌ها [English]

  • Step Reactor
  • Hydraulic Parameters
  • kinetic modeling
  • Optimizing the Consumed Energy
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