This study analyses the performance of ethanol biofiltration with percolation (biotrickling filtration, BTF) comparing to a conventional biofilter (biofiltration, BF). Two biofilters packed with clay balls were operated in a range of inlet concentrations of ethanol in the air varying from 0.47 to 2.36 g m−3. For both the BF and BTF, the specific growth rate (μ) and the elimination capacity (EC) decreased with the ethanol inlet concentration, presenting a kinetic of substrate inhibition. A Haldane-type model was adjusted for both biofilters in order to model both EC and μ as a function of the ethanol inlet concentration in the gas. The maximum EC was similar for both biofilters, at around 46 g m−3 h−1, whereas the maximum μ was 0.0057 h−1 for the BF and 0.0103 h−1 for the BTF. The maximum of ethanol removed, occurned at the lowest inlet concentration of (0.47 g m−3), and reached 86% for the BF and 74% for the BTF.

中文翻译：

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生物过滤和生物滴滤法生物处理乙醇污染空气的分析比较

本研究分析了与传统生物过滤器（生物过滤，BF）相比，带有渗透的乙醇生物过滤（生物滴滤，BTF）的性能。两个装有粘土球的生物过滤器在空气中乙醇的入口浓度范围从 0.47 到 2.36 gm-3 的范围内运行。对于BF和BTF，比增长率（μ）和消除能力（EC）随着乙醇入口浓度的增加而降低，呈现出底物抑制的动力学。为两种生物过滤器调整了 Haldane 型模型，以便将 EC 和 μ 建模为气体中乙醇入口浓度的函数。两种生物过滤器的最大 EC 相似，约为 46 gm-3 h-1，而 BF 的最大 μ 为 0.0057 h-1，BTF 的最大 μ 为 0.0103 h-1。乙醇去除的最大值，