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三氯乙烯共代谢生物降解研究

Keywords: 三氯乙烯,共代谢降解,生长基质

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Abstract:

采用室内培养试验方法,研究了三氯乙稀(TCE)共代谢对生物降解的影响。结果表明,作为能够支持TCE共谢的生长基质之一的甲苯的初始浓度对TCE的生物降解影响很大,在TCE对甲苯的物质浓度比为1∶23、1∶115和230的实验中,分别有60%、95.44%和64.3%的TCE被降解了。在第二种浓度比下,TCE和甲苯的降解速率最快,降程度最为彻底。另外,在TCE和甲苯的降解曲线中观察到了曲线振荡现象,并且两者浓度比越接近于1,其振荡越为重。

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