مشخصات پژوهش

عنوان	Optimization of petroleum refinery effluent treatment in a UASB reactor using response surface methodology
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	Optimization, Petroleum refinery effluent, UASB, Biogas production, Response surface methodology
چکیده	An upflow anaerobic sludge blanket (UASB) bioreactor was successfully used for the treatment of petroleum refinery effluent. Before optimization, chemical oxygen demand (COD) removal was 81% at a constant organic loading rate (OLR) of 0.4 kg/m3 d and a hydraulic retention time (HRT) of 48 h. The rate of biogas production was 559 mL/h at an HRT of 40 h and an influent COD of 1000 mg/L. Response surface methodology (RSM) was applied to predict the behaviors of influent COD, upflow velocity (Vup) and HRT in the bioreactor. RSM showed that the best models for COD removal and biogas production rate were the reduced quadratic and cubic models, respectively. The optimum region, identified based on two critical responses, was an influent COD of 630 mg/L, a Vup of 0.27 m/h, and an HRT of 21.4 h. This resulted in a 76.3% COD removal efficiency and a 0.25 L biogas/L feed d biogas production rate.
پژوهشگران	سید محمد موسوی (نفر دوم)، سیدامید رستگار (نفر اول)، سید عباس شجاع الساداتی (نفر سوم)، سهیلا شیبانی (نفر چهارم)