Research progress on aerobic microbial degradation of MTBE compound pollution in environment
Methyl tert-butyl ether(MTBE)has been widely used as a gasoline additive in the past decades.It often enters the environment with other gasoline components through fuel leakage,vehicle exhaust emissions,etc.,resulting in complex persistent composite pollution.Microbial aerobic degradation is an effective treatment technology with low cost,environmental friendliness and wide application.However,the interaction between different pollutants such as co-metabolism,inhibition and cross-induction can affect the removal of target pollutants.The application cases of aerobic microbial degradation technology in the binary composite pollution composed of MTBE and alkanes,aromatic hydrocarbons,heavy metals and other pollutants were summarized,and its degradation effect and mechanism were analyzed and elaborated.The results show that compared with single strains,mixed flora has a diverse community structure and higher stability,and the synergistic effect between different strains can help to remove pollutants.The biomass of microorganisms is also an important factor in degradation,and can be maintained or improved by immobilisation techniques to further enhance pollutant degradation.MTBE is still the main gasoline explosion-proof agent in China and the environmental pollution caused by it has existed for a long time.Screening strains with higher degradation efficiency,designing more efficient biological treatment schemes for compound pollution and exploring the mechanism of microbial degradation of compound pollution are the focus of future research.
Methyl tert-butyl Etheraerobic biodegradationcompound pollutionhydrocarbonsheavy metal
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