Modeling of Oxygen Transfer during Aerobic Biodegradation of Pnitrophenol in a Slurry Babble Column by Acclimated Waste Activated Sludge
سال انتشار: 1396
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 495
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شناسه ملی سند علمی:
MARBS01_050
تاریخ نمایه سازی: 4 مهر 1396
چکیده مقاله:
An aerobic biodegradation of p-nitrophenol (PNP) by acclimated waste activated sludge in a bubble column was examined at varying initial PNP concentrations, activated sludge concentrations, and aeration rates. The time course of the biodegradation of PNP in a batch slurry bubble column could bedivided into three phases, i.e., lag phase, exponential degradation phase, and ultimate deceleration phase. For the aerobic biodegradation of p-nitrophenol by acclimated waste activated sludge, the dynamic models for the dissolved oxygen mass balance and PNP degradation kinetics with the proposed correlations for volumetric oxygen transfer coefficient and oxygen uptake rate could successfully simulate the concentration profiles of dissolved oxygen and PNP during the time course of anaerobic biodegradation of PNP. In this research, determine a mathematical model for oxygen transfer in a bubble column bioreactor. The results of this study showed that the standard deviation of the proposed model for oxygen transfer is equal to 11.8%.
کلیدواژه ها:
Aerobic biodegradation ، Dynamic models ، Oxygen uptake rate ، P-Nitrophenol ، Volumetric oxygen transfer coefficient
نویسندگان
Esmaeil Jafari
Department of Petroleum Engineering, Omidiyeh Branch, Islamic Azad University, Omidiyeh, Iran
Ghazaleh Shakeri
Department of Chemical Engineering, Gachsaran Branch, Islamic Azad University, Gachsaran, Iran