Mass transfer limitations commonly challenge biofiltration for n-hexane emissions due to its high hydrophobicity. In this study, a bench-scale biotrickling filter (BTF) packed with reticulated polyurethane sponge was evaluated for n-hexane removal at various organic loading rates (OLRs) (ranging from 15 to 60 g m⁻³ h^-1) and gas empty bed contact times (EBCTs) (ranging from 30 to 7.5 s). The obtained results show that the designed BTF can effectively remove n-hexane under intermittent spraying mode of the nutrient solution and the reticulated configuration of the packing media, which resulted in the spatial development of mycelium and enhanced mass transfer of n-hexane. The mean maximum removal efficiencies (REs) of n-hexane were 92.6 ± 0.9 %, 86.7 ± 4.8 %, and 63.8 ± 3.3 % under the OLRs of 15.67, 30.20, and 61.59 g m⁻³ h^-1, respectively. When the BTF was operated under gas EBCTs of 30, 15, and 7.5 s, average REs of 85.9 ± 5.7 %, 44.8 ± 6.3 %, and 31.2 ± 2.5 % were achieved. The BTF also showed a superior fluctuation resistance capability and prevented excessive biofilm accumulation due to the reticular configuration of the polyurethane sponge. Results present in this study could provide an alternative consideration for the practical industrial application in treating hydrophobic VOC like n-hexane.

传质限制，通常为挑战生物过滤ň正己烷排放，由于其高疏水性。在这项研究中，填充有网状聚氨酯海绵工作台规模生物滴滤床（BTF）评价Ñ在各种有机负荷率（OLRs）（范围从15至60克正己烷除去^-3 ħ ^-1）和气体空床接触时间 (EBCT)（范围从 30 到 7.5 秒）。所得到的结果表明，所设计BTF能有效地去除Ñ正己烷下间歇喷射营养液的模式和填料介质的网状结构，导致菌丝的空间开发和增强质量传递Ñ-己烷。的平均最大去除率（RES）ñ -己烷分别为92.6±0.9％，86.7±4.8％，和63.8±3.3％的OLRs下的15.67，30.20，61.59和GM ^-3 ħ ^-1，分别。当 BTF 在 30、15 和 7.5 秒的气体 EBCT 下运行时，实现了 85.9 ± 5.7 %、44.8 ± 6.3 % 和 31.2 ± 2.5 % 的平均 RE。由于聚氨酯海绵的网状结构，BTF 还表现出优异的抗波动能力并防止过度的生物膜积累。结果呈现在该研究中可用于治疗疏水VOC等提供用于实际工业应用的替代考虑Ñ正己烷。