Kinetic Constants of Anaerobic Hybrid Reactor Treating Petrochemical Waste
Corresponding Author(s) : M.T. Jafarzadeh
Asian Journal of Chemistry,
Vol. 21 No. 3 (2009): Vol 21 Issue 3
Abstract
In this study, some bio-kinetic models applied to data obtained from experimental studies to determining of most suitable models. A laboratory scale anaerobic hybrid reactor for treating petrochemical wastewater at mesophilic conditions was used. Treatment efficiencies were investigated for different regions at different hydraulic retention times (4, 8, 12, 24 and 48 h) and influent concentrations (1000, 1500, 2000, 3000 and 4000 mg/L), this resulted in organic loading rates ranging 0.5 to 24 kg/m3 d. The results showed that second-order model and a modified Stover-Kincannon model were the most appropriate models for this reactor. The second-order substrate removal rate constant (k2(s)) was found as 0.2145, 0.01724 and 0.1456 per day for sludge bed region, fixed bed region and overall reactor, respectively. The data obtained from fixed region used for modified Stover-Kincannon model. The maximum removal rate constant (Umax) and saturation value constant (KB) were found to be 68.97 g/L d and 229.7 g/L d, respectively.
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