珠江水体系中降解菲的研究——游离菌  

Biodegradation of Phenanthrene in Pearl River Water by Using Free Strain of Sphingomonas Sp. GY2B

作　　者：麦志宏 

机构地区：[1]广州市海珠区环境监测站,广东广州510000

出　　处：《广东化工》2016年第13期74-75,86,共3页Guangdong Chemical Industry

摘　　要：生物降解是多环芳烃从环境中去除的主要途径。通过对鞘氨醇单胞菌(Sphingomonas sp.GY2B)研究发现其对菲有较高的降解效率,在不同的模拟(无机盐和珠江水)状态下,GY2B对菲都能起到很好的降解效果,而不同模拟状态下GY2B在相同时间段和对菲的降解率也存在区别,总体看来,珠江水体系中因为营养物质丰富,对GY2B降解菲的促进作用更为明显。同时,当珠江水菌数量过多,则可能因为减弱了GY2B在种间竞争中的优势,反而对GY2B降解菲起一定的阻碍作用。Biodegradation has been suggested as one of the main approaches to remove polycyclic aromatic hydrocarbons（PAHs） from contaminated environment. The study found the Sphingomonas sp. GY2 B had high efficiency on degrading phenanthrene in different simulated conditions including inorganic salts medium and Pearl River water system. Results showed that the growth of strain GY2 B and its phenanthrene dagrading efficiency were different in different simulation environment. Overall, Pearl River water system could obviously promote the phenanthrene dagrading efficiency of strain GY2 B because of its rich nutrients. It was found that the dosage of the Pearl River water could affect the phenanthrene dagrading efficiency of strain GY2 B. However, addition of excessive Pearl River water might weaken the advantage of GY2 B in the interspecific competition and the phenanthrene dagrading efficiency of strain GY2 B would be hindered to some extent.

关 键 词：多环芳烃 生物降解 鞘氨醇单胞菌GY2B 菲 珠江水 

分 类 号：TQ[化学工程]