Combined microbial degradation of crude oil under alkaline conditions by Acinetobacter baumannii and Talaromyces sp

被引：62

作者：

Zhang, Xinying ^{[1
]}

Kong, Dewen ^{[1
]}

Liu, Xiaoyan ^{[1
]}

Xie, Huanhuan ^{[1
]}

Lou, Xinyi ^{[1
]}

Zeng, Cheng ^{[1
]}

机构：

[1] Shanghai Univ, Coll Environm & Chem Engn, 99 Shangda Rd, Shanghai 200444, Peoples R China

来源：

CHEMOSPHERE | 2021年 / 273卷

基金：

上海市自然科学基金; 中国国家自然科学基金;

关键词：

Crude oil; Microbial degradation; Bacteria-fungi co-culture; Acinetobacter baumannii; Talaromyces sp; Alkali resistance; INDIGENOUS BACTERIAL CONSORTIUM; PETROLEUM-HYDROCARBONS; CONTAMINATED SOIL; BIOLOGICAL-ACTIVITY; BIODEGRADATION; FUNGI; BIOSURFACTANT; COMMUNITY; BACILLUS; DIESEL;

D O I：

10.1016/j.chemosphere.2021.129666

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The purpose of this work was to study the biodegradation of crude oil under alkaline condition by defined co-culture of Acinetobacter baumannii and Talaromyces sp. The n-alkanes in crude oil could be completely degraded by bacteria and fungi with the ratio of 1:1 at pH 9 in 14 d water simulation experiment. Meanwhile, the total degradation rate of crude oil could reach 80%. Fungi had stronger ability to degrade n- alkanes, while bacteria could better degrade other components such as aromatics and branched alkanes. The two strains were both capable of producing a small amount of biosurfactant. High cell viability was the main factor for strains to exert high degradation ability in alkaline environment. It was preliminarily verified that bacteria and fungi rely on the differences of enzyme systems to achieve synergy in the degradation process. These results indicated that the defined co-culture had great potential for bioremediation in alkaline soils. (C) 2021 Elsevier Ltd. All rights reserved.

引用

页数：9

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