Mudliar Sandeep, Banerjee Saumita, Vaidya Atul, Devotta Sukumar
Environmental Biotechnology Division, National Environmental Engineering Research Institute (CSIR), Nehru Marg, Nagpur 440020, India.
Bioresour Technol. 2008 Jun;99(9):3468-74. doi: 10.1016/j.biortech.2007.08.001. Epub 2007 Sep 14.
A steady model for the evaluation of external liquid film diffusion and internal pore diffusion effects in an immobilized biofilm system under continuous mode of operation was developed. The model takes into account, substrate diffusion through external liquid film and biofilm. Average rate of substrate consumption in the biofilm was considered. The overall efficiency of the biofilm was mathematically represented by considering the combined effects of substrate penetration and substrate utilization in the biofilm. The model was illustrated using a case study of pyridine biodegradation in a rotating biological contactor immobilized with pyridine degrading microbial film. The model is able to effectively predict both internal and external mass transfer effects in an immobilized biofilm system.
建立了一个稳定模型，用于评估连续运行模式下固定化生物膜系统中外部液膜扩散和内部孔隙扩散的影响。该模型考虑了底物通过外部液膜和生物膜的扩散。考虑了生物膜中底物消耗的平均速率。通过考虑底物在生物膜中的渗透和利用的综合影响，以数学方式表示生物膜的整体效率。通过一个用吡啶降解微生物膜固定的旋转生物接触器中吡啶生物降解的案例研究来说明该模型。该模型能够有效预测固定化生物膜系统中的内部和外部传质效应。
