Ilse Smets, Jan Van Impe and Dirk Springael (K.U.Leuven, Heverlee, Belgium) Methyl tertiary-butyl ether (MTBE) is a former synthetic additive of reformulated gasoline that acts as an oxygenate and as an octane enhancer. Following accidental releases, however, it forms highly mobile recalcitrant contamination plumes in ground water. MTBE has a very low taste and odour threshold in drinking water; therefore, remediation of contaminated ground water is needed. At VITO, a stable mixed bacterial consortium with the capacity to aerobically degrade MTBE to tertiary-butyl alcohol (TBA) and consequently to carbon dioxide (CO2) has been enriched out of a Belgian MTBE-contaminated soil sample (Moreels et al, 2004 -FEMS Microb. Ecol. 49: 121- 128). The aim of the presented work is to study the influence of various environmental parameters as pH, dissolved oxygen concentration (DO), temperature, co-contaminant concentration (benzene, toluene and meta-xylene, BTmX) and substrate concentration (MTBE or TBA) on the biological degradation of MTBE and TBA by this mixed bac- terial consortium.
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机译：ILSE SMETS，Jan Van Impe和Dirk Springael（K.u.Leuven，Heverlee，比利时）甲基叔丁基醚（MTBE）是作为含氧化合物和辛烷增强剂的重新加载汽油的前合成添加剂。然而，在意外释放之后，它在地下水中形成了高度移动的顽固污染羽毛。 MTBE在饮用水中具有非常低的味道和气味阈值;因此，需要修复受污染的地下水。在VIVO中，一种稳定的混合细菌联盟，其具有富含叔丁醇（TBA）的能力，并因此富集了比利时MTBE污染的土壤样品（METRES等，2004年）的富含叔丁醇（TBA）和二氧化碳（CO2）。 FEMS microb。ECOL。49：121-128）。所提出的作品的目的是研究各种环境参数的影响，作为pH，溶解氧浓度（DO），温度，共污染物浓度（苯，甲苯，甲烷，BTMX）和底物浓度（MTBE或TBA）这种混合化联盟MTBE和TBA的生物降解。
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