NDLI: Study on biological degradation and transform characteristics of different components in petroleum hydrocarbon used by bacterial consortium

Content Provider	Springer Nature Link
Author	Chen, Lihua Xiao, Chaohu Luo, Xiaofang Sun, Wanhong
Copyright Year	2016
Abstract	Some oil-degradation bacterial strains, designated as F1, F2, A5, A6, and D4, were screened and isolated from oil-contaminated soil at the Huaqing Oilfield of Gansu Province, China. The degradation of n-alkanes, hopanes and aromatic hydrocarbons was detected by GC–MS, and biological transform characteristics of n-alkanes, hopanes, aromatic hydrocarbon had been analyzed by various biological marker ratios. The results show that the highest degradation rate of A5, D4 and the mixed bacteria H for high carbon normal alkanes (C$_{28}$–C$_{39}$) is more than 70 %. The degradation rate of mixed bacteria H for n-alkanes is relatively balanced. The max w(∑C$_{21−}$/∑C$_{22+}$) ratio is 0.75, indicating that F2 predominately degrades higher molecular weight n-alkanes. The various strains can promote the transition from less stable R configuration of pentacyclic triterpenes to stable S configuration in 7 days. The w(Ts)/w(Tm) of A5 for hopanes is biggest (0.96), indicating that transformation is most complete. For hopanes, the mixed bacteria H have the best degradation rate and the advantages are obvious. Single bacteria and the mixed bacteria H all have a strong demethylation effect on the naphthalene ring, wherein F1, A5 and D4 have the strongest effects. The mixed bacteria H have an obvious degradation effect on chrysenes. As the research object, this paper systematically studied the degradation and biomarkers of n-alkanes, hopanes and aromatic hydrocarbons by means of ultraviolet spectroscopy and GC–MS to provide basic information for further study of petroleum-contaminated soil remediation technologies.
Starting Page	1
Ending Page	12
Page Count	12
File Format	PDF
ISSN	18666280
Journal	Environmental Earth Sciences
Volume Number	75
Issue Number	9
e-ISSN	18666299
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-04-28
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Mixed bacteria Biodegradation Petroleum-contaminated soil GC–MS Geology Hydrology/Water Resources Geochemistry Environmental Science and Engineering Terrestrial Pollution Biogeosciences
Content Type	Text
Resource Type	Article
Subject	Global and Planetary Change Earth-Surface Processes Soil Science Environmental Chemistry Pollution Geology Water Science and Technology

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