Lysinibacillus sphaericus proved to have potential for the remediation of petroleum hydrocarbons

In this study, the ability of Lysinibacillus sphaericus to degrade aromatic hydrocarbons as well as complex hydrocarbon mixtures, such as diesel oil and oily sludge, was evaluated. L. sphaericus was able to grow when toluene, naphthalene, or phenanthrene were used as a sole carbon source in minimal...

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Bibliographic Details
Published in:Soil & sediment contamination 2018-08, Vol.27 (6), p.538-549
Main Authors: Hernández-Santana, Alejandra, Dussán, Jenny
Format: Article
Language:English
Subjects:
Aromatic compounds
Aromatic hydrocarbons
Benzene
Biodegradation
Bioremediation
Carbon sources
Containers
Diesel fuels
Diesel oil
Ethylbenzene
field
Headspace
Hydrocarbons
Lysinibacillus sphaericus
Naphthalene
Oil
oily sludge
Petroleum
Petroleum hydrocarbons
Phenanthrene
Phenols
Removal
Sludge
Toluene
Volatile hydrocarbons
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Summary:In this study, the ability of Lysinibacillus sphaericus to degrade aromatic hydrocarbons as well as complex hydrocarbon mixtures, such as diesel oil and oily sludge, was evaluated. L. sphaericus was able to grow when toluene, naphthalene, or phenanthrene were used as a sole carbon source in minimal salt medium. Removal efficiencies of up to 95% were found for C 10 -C 28 hydrocarbons in the biodegradation assays of diesel oil. The biodegradation of oily sludge was evaluated in landfarming-like experiments in the open air and in completely covered containers in the field. After 50 days of treatment, the removal efficiency of total petroleum hydrocarbons in open-air and closed assays was of 84.1% and 60.1%, respectively. Furthermore, L. sphaericus was able to degrade volatile hydrocarbons (benzene, toluene, ethylbenzene, and phenol) in the headspace of closed containers, preventing the emission of these compounds to the atmosphere. L. sphaericus was herein proposed as a promising candidate to be used in bioremediation strategies of petroleum hydrocarbons.
ISSN:1532-0383
1549-7887
DOI:10.1080/15320383.2018.1490888