真菌对土壤中苯并[a]芘的共代谢降解

研究了模拟生物泥浆法修复多环芳烃污染土壤.选择了几种从石油污染土壤中分离出来的真菌,研究它们对土壤内苯并a]芘的降解,并研究了土壤内共存底物:菲、芘、邻苯二甲酸对苯并a]芘降解的影响,及其之间的共代谢过程.结果表明,芘可以促进镰刀菌、毛霉对苯并a]芘的降解,并认为这是共代谢作用的结果;菲也可以促进镰刀菌对苯并a]芘的降解,但抑制了毛霉和青霉对苯并a]芘的降解;而邻苯二甲酸对青霉和毛霉降解苯并a]芘的过程均有抑制作用. 

Cometabolic Degradation of Benzo[a]pyrene in the Soil by the Introduced Fungi

Simulated bioslurry remediation of polycyclic aromatic hydrocarbons contaminated soll was carried out.Three kinds of fungi screened out from petroleum oil contaminated soil were applied to investigate the degradation of benzoa]pyrene by them.The effects of co\|substrates,such as phenanthrene,pyrene and phthalic acid,on the degradation of benzoa]pyrena and cometabolism between them were also studied.The results showed that pyrene could promote the degradation of benzoa]pyrene by fusarium sp.or mucor sp.,which was considered as result of cometabolism.The presence of phenanthren enhanced degradation rate of benzoa]pyrene by fusarium sp.,but inhibited the degradation of benzoa]pyrene by mucor sp. or penicillium sp..The degradation of benzoa]pyrene by mucor sp.or penicillium sp. was inhibited by the addition of phthalic acid.