甲醛降解菌的筛选及降解特性研究
Screening and degradation characteristics of a formaldehyde degrading bacterium
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摘要: 从采集活性污泥中筛选得到1株具有高效降解甲醛能力的菌株并命名为JQ-1，根据其形态特征，初步判断菌株JQ-1属假单胞菌属。同时对菌株JQ-1的生长特性及降解特性进行了初步研究。实验结果表明，该菌株降解甲醛的最适条件为：甲醛废水浓度为50 mg/L，pH值为6，培养温度为25℃，摇床转速为150 r/min。在最适条件下，菌株JQ-1具有较强的降解甲醛能力，当甲醛废水浓度为50 mg/L时，在24 h内甲醛降解率可达87%以上。Abstract: A strain named JQ-1，which was good at degrading formaldehyde，was screened from the activated sludges. The strain was preliminarily identified as Pseudomonas sp. according to its morphology. Meanwhile，the growth characteristics and degradation characteristics of strains JQ-1 were preliminarily studied. The optimum conditions of formaldehyde degradation were as follows: concentration of formaldehyde wastewater of 50 mg/L，pH value of 6，incubation temperature of 25℃，and rotating rate of 150 r/min. The results showed that under optimum conditions，strain JQ-1 had strong formaldehyde degradation capability. The removal efficiency of formaldehyde can be as high as 87% in 24 h when the concentration of formaldehyde wastewater was 50 mg/L.
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