Degradation characteristics of crude oil by a consortium of bacteria in the existence of chlorophenol

被引:7
|
作者
Li, Jing [1 ,2 ]
Liu, Qiyou [1 ,2 ]
Sun, Shuo [1 ,2 ]
Zhang, Xiuxia [1 ,2 ]
Zhao, Xiuying [1 ]
Yu, Junlong [1 ]
Cui, Wu [1 ]
Du, Yi [1 ]
机构
[1] China Univ Petr East China, Sch Chem & Chem Engn, 66 Changjiang West Rd, Qingdao 266580, Peoples R China
[2] State Key Lab Petr Pollut Control, Qingdao 266580, Peoples R China
关键词
Bacteria consortia; Crude oil; 2,4-Dichlorophenol; Optimizing degradation conditions; Mechanism exploration; CONTAMINATED SOIL; N-ALKANE; BIODEGRADATION; HYDROCARBONS; OXIDATION; STRAIN; BIOREMEDIATION; BIOSURFACTANT; REFINERY; DIESEL;
D O I
10.1007/s10532-022-09992-z
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
In order to enhance the degradation effect of microorganisms on crude oil in the existence of chlorophenol compounds, oil-degrading bacteria C4 (Alcaligenes faecails), C5 (Bacillus sp.) and 2,4-dichlorophenol (2,4-DCP) degrading bacteria L3 (Bacillus marisfiavi), L4 (Bacillus aquimaris) were isolated to construct a highly efficient consortium named (C4C5 +L3L4). When the compound bacteria agent combination by V-C4 : V-C5: V-L3 : V-L4 =1:2:2:1, the crude oil degradation efficiency of 7 days was stable at 50.63% similar to 55.43% under different conditions. Degradation mechanism was analyzed by FTIR, GC-MS and IC technology and the following conclusions showed that in the system of adding consortium (C4C5 + L3L4), the heavy components were converted into saturated and unsaturated components. The bacterial consortium could first degrade medium and long chain alkanes into short chain hydrocarbons and then further degrade. And the dechlorination efficiency of 2,4-DCP in the degradation system reached 73.83%. The results suggested that the potential applicability and effectiveness of the selected bacteria consortium for the remediation of oil-contaminated water or soil with the existence of chlorophenol compound. [GRAPHICS] .
引用
收藏
页码:461 / 476
页数:16
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