Biodegradation of marine surface floating crude oil in a large-scale field simulated experiment

TitleBiodegradation of marine surface floating crude oil in a large-scale field simulated experiment
Publication TypeJournal Article
Year of Publication2014
AuthorsBao M, Sun P, Yang X, Wang X, Wang L, Cao L, Li F
JournalEnvironmental Science-Processes & Impacts
Volume16
Pagination1948-1956
Date PublishedAug
ISBN Number2050-7887
Accession NumberWOS:000340081400015
KeywordsOil and Gas Degradation
AbstractBiodegradation of marine surface floating crude oil with hydrocarbon degrading bacteria, rhamnolipid biosurfactants, and nutrients was carried out by a large-scale field simulated experiment in this paper. After a 103 day experiment, for n-alkanes, the maximum biodegradation rate reached 71% and the results showed hydrocarbon degrading bacteria, rhamnolipid biosurfactants, and nutrients have a comprehensive effect. It also showed that rhamnolipid biosurfactants could shorten the biodegradation time through an emulsifying function; the nutrients could greatly increase the biodegradation rate by promoting HDB production. For PAHs, the chrysene series had higher weathering resistance. For the same series, the weathering resistance ability is Cl- < C2- < C3- < C4-. After 53 days, no comprehensive effect occurred and more biodegradation was found for different n-alkanes in two pools which only had added rhamnolipid biosurfactants or nutrients, respectively. Except for C14, C15 and C16 sesquiterpanes, most of the steranes and terpanes had high antibiodegradability.
DOI10.1039/c4em00166d