Chemical Engineering Laboratory, Faculty of Sciences, University of La Coruña, Rua da Fraga, 10, E-15008 La Coruña, Spain.
Bioresour Technol. 2011 Jul;102(13):6791-800. doi: 10.1016/j.biortech.2011.04.010. Epub 2011 Apr 12.
A Sporothrix variecibatus-inoculated biotrickling filter (BTF) was examined for styrene removal, without and with the addition of silicone oil, at different empty bed residence times. The highest elimination capacities (ECs) were 172.8 (without silicone oil) and 670 g m(-3)h(-1) (with silicone oil), respectively, corresponding to a 4-fold improvement in presence of oil. The addition of silicone oil formed a well-coalesced emulsion of fungi and silicone oil, resulting in filter-bed clogging. Clogging prevention strategies adopted were; (i) lowering the volume ratio of silicone oil from 10% to 2% (v/v), and (ii) periodic increase in trickling rate of the medium from 50 to 190 mL min(-1). During shock-load experiments, the BTF with silicone oil (2% v/v) could withstand high styrene loads, of up to 1900 g m(-3)h(-1), when compared to the BTF without silicone oil (400 g m(-3)h(-1)).
接种了嗜热枝孢菌的生物滴滤池（BTF）在不同空床停留时间下，考察了其在无硅油和添加硅油条件下去除苯乙烯的效果。最高去除容量（EC）分别为 172.8（无硅油）和 670 g m(-3)h(-1)（添加硅油），表明添加硅油后去除率提高了 4 倍。添加硅油后形成了真菌和硅油的良好聚结乳液，导致滤床堵塞。为了防止堵塞，采取了以下策略：（i）将硅油的体积比从 10%降低至 2%（v/v），（ii）周期性地将介质的滴滤速率从 50 增加至 190 mL min(-1)。在冲击负荷实验中，与无硅油的 BTF（400 g m(-3)h(-1)）相比，添加了 2%（v/v）硅油的 BTF 可以承受高达 1900 g m(-3)h(-1)的高苯乙烯负荷。
