Biodegradation of High Molecular Weight Polycyclic Aromatic Hydrocarbons Mixture by a Newly Isolated Fusarium sp and Co-Metabolic Degradation with Starch

文献类型： 外文期刊

第一作者： Zhao Ou-ya

作者： Zhao Ou-ya;Feng Sheng-dong;Jia Hai-bin;Zhang Xue-na;Wei Shi;Wei Wang;Yang Zhi-xin;Zhao Ou-ya;Feng Sheng-dong;Jia Hai-bin;Zhang Xue-na;Wei Shi;Wei Wang;Yang Zhi-xin;Zhao Ou-ya;Li Yu-ling

作者机构：

关键词： Biodegradation;coal mining area;co-metabolic substrate starch;Fusarium sp;(ZH-H2);HMW-PAH mixture

期刊名称：POLYCYCLIC AROMATIC COMPOUNDS （ 影响因子：3.744； 五年影响因子：3.584 ）

ISSN： 1040-6638

年卷期： 2018 年 38 卷 1 期

页码：

收录情况： SCI

摘要： One native fungal strain, designated ZH-H2, was isolated from an agricultural soil contaminated by HMW-PAHs in a typical coal mining area of Hebei, China. The filamentous fungus was identified as a Fusarium sp. ZH-H2 was able to survive not only in the presence of the individual HMW-PAHs of Chry, BaA, B(K)F, BaP, DB(a,h)A, InP, InP and B(g,h,i)p but in the presence of a mixture of the above seven HMW-PAHs with a total concentration of up to 10mg L-1. Biodegradation experiments demonstrated that Fusarium sp. (ZH-H2) was able to degrade the aforementioned individual HMW-PAHs, with a degradation percentage of 77%, 85%, 91%, 42%, 56%, 42% and 38%, respectively, and degrade the aforementioned seven PAHs mixture with a degradation percentage of 48%. The effect of starch addition on the biodegradation efficiency of the PAH mixture was also investigated. The results showed a significant improvement in the degradation extent of the PAH mixture with the increase of starch concentration. The greatest degradation rate (DR; 89%) in 7 d was obtained when starch was added at 1.0g L-1, about 2-fold than was achieved without starch. This study implicates that Fusarium sp. (ZH-H2), a potential biodegrader, is suitable for practical field application in effective bioremediation of soils that have been simultaneously contaminated by several HMW-PAHs for a long time.

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