Department of Health and Safety and Environmental Engineering, Central Taiwan University of Science and Technology, Bei-tun District, Taichung 40601, Taiwan.
J Hazard Mater. 2009 Dec 30;172(2-3):1394-401. doi: 10.1016/j.jhazmat.2009.08.005. Epub 2009 Aug 8.
A mathematical model system was derived to describe the simultaneous removal of phenol biodegradation with chromium(VI) reduction in an anaerobic fixed-biofilm reactor. The model system incorporates diffusive mass transport and double Monod kinetics. The model was solved using a combination of the orthogonal collocation method and Gear's method. A laboratory-scale column reactor was employed to validate the kinetic model system. Batch kinetic tests were conducted independently to evaluate the biokinetic parameters used in the model simulation. The removal efficiencies of phenol and chromium(VI) in an anaerobic fixed-biofilm process were approximately 980 mg/g and 910 mg/g, respectively, under a steady-state condition. In the steady state, model-predicted biofilm thickness reached up to 350 microm and suspended cells in the effluent were 85 mg cell/l. The experimental results agree closely with the results of the model simulations.
建立了一个数学模型系统，以描述在厌氧固定生物膜反应器中同时去除苯酚生物降解和六价铬还原的过程。该模型系统结合了扩散传质和双 Monod 动力学。使用正交配置法和 Gear 法的组合来求解模型。采用实验室规模的柱式反应器对动力学模型系统进行了验证。分批动力学试验独立进行，以评估模型模拟中使用的生物动力学参数。在稳态条件下，厌氧固定生物膜工艺对苯酚和六价铬的去除效率分别约为 980 mg/g 和 910 mg/g。在稳态下，模型预测的生物膜厚度可达 350 微米，流出物中的悬浮细胞为 85 mg 细胞/L。实验结果与模型模拟结果非常吻合。
