Heavy Oil Biodegradation by Mixed Bacterial
Consortium of Biosurfactant-Producing and Heavy
Oil-Degrading Bacteria

Dai, Xiaoli; Lv, Jing; Wei, Wenxia

doi:10.15244/pjoes/120769

Cited by 14 publications

(11 citation statements)

References 24 publications

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“…According to this analysis and in light of the fact that they are often used interchangeably, we conclude that the terms microbial consortium, synthetic microbial community, microbial cocktail, and synthetic microbiome Del Frari et al, 2019;El Hage et al, 2019;Colpa et al, 2020;Pereira et al, 2020;Dai et al, 2021 Chen et al, 2018;Wang et al, 2018;Rafique et al, 2019;Rékási et al, 2019;Dong et al, 2020;Singh et al, 2020 Synthetic microbial community Shahab et al, 2018;Carrión et al, 2019;Christiaens et al, 2019;Honjo et al, 2019;Wang et al, 2020;Krieger et al, 2021 Microbial cocktail Moreira et al, 2017;Qu et al, 2018;Pasaribu et al, 2019;Pires et al, 2019;Tobin et al, 2020;Zheng et al, 2020 Synthetic microbiome Venturelli et al, 2018;Timmis et al, 2019;Vandeplassche et al, 2019;Voges et al, 2019;Koskella, 2020;Mabwi et al, 2021 The symbol "+" indicates the presence of the specific key characteristic, while the symbol "-" indicates its absence, in association with each term (refer to the text for the definition of the concepts of each key characteristic).…”

Section: Are Microbial Blend-related Terms Synonyms?mentioning

confidence: 78%

Microbial Blends: Terminology Overview and Introduction of the Neologism “Skopobiota”

Frari

Ferreira

2021

Front. Microbiol.

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Section: Are Microbial Blend-related Terms Synonyms?mentioning

confidence: 78%

Microbial Blends: Terminology Overview and Introduction of the Neologism “Skopobiota”

Frari

Ferreira

2021

Front. Microbiol.

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“…Por otra parte, se conoce que durante este periodo las bacterias atraviesan por una serie de procesos de inducción y síntesis de las enzimas responsables de la descomposición de los hidrocarburos, y síntesis de surfactantes, entre otros compuestos adyuvantes, lo cual ralentiza el inicio del proceso de biodegradación (Shahsavari et al, 2017;Xu et al, 2018). Además, la metabolización de mezclas complejas de hidrocarburos, como el crudo Napo, requieren de un lento proceso de hidrólisis de hidrocarburos de alto peso molecular en moléculas más pequeñas, las cuales son más fácilmente asimilables (Dai, Lv, Guo, & Wei, 2021).…”

Section: Biodegradación De Crudo Napounclassified

Establecimiento de un consorcio bacteriano nativo degradador de crudo Napo

García

Rosero

Cerda-Mejía

et al. 2022

ACI

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Oil extraction activities are vulnerable to the occurrence of fortuitous environmental incidents that cause great deterioration of the native flora and fauna due to their exposure to petroleum hydrocarbons. Thus, there is an urgent need to efficiently eliminate the toxic oil components accumulated in the environment. Here, fifteen hydrocarbon-degrading bacterial consortia able to use Napo-crude oil as the only carbon source were isolated from soil samples. Of these, six consortia showed an oil biodegradation efficiency (%BE) that fluctuated between 20.12 to 27.98% after 22 days of incubation. The isolated consortia showed a significantly higher degradation efficiency compared to that of Pseudomonas aeruginosa and Bacillus cereus mixed culture (%BE = 9.37). The native consortium CPF-L5A, established from soil samples exposed for a long time to hydrocarbons, showed the highest crude biodegradation efficiency amongst the isolated consortia. Virtually, this consortium could totally remove the biodegradable fraction of Napo-crude oil in approximately 2.6 months. Therefore, the CPFL5A consortium is an excellent candidate to be used in the ex-situ treatment of oil-contaminated soils through the implementation of a bioaugmentation system.

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“…The bacterial strain was separately incubated in a rotatory shaker (160 rpm) under aerobic conditions at 30 • C for 24 h. Cells in the Luria-Bertani (LB) medium were harvested by centrifugation at 5000 rpm for 10 min and washed three times, and the OD 600 was adjusted to 0.8 using distilled saline solution. The composition and heavy oil degradation characteristics of the bacterial consortia were reported in a previous study [22]. The bacterial consortia were constructed by optimizing the degradation efficiency of heavy oil.…”

Section: Heavy Oil-degrading Bacterial Consortiamentioning

confidence: 99%

Effects of Adding Laccase to Bacterial Consortia Degrading Heavy Oil

Dai

Wei

et al. 2021

Processes

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High-efficiency bioremediation technology for heavy oil pollution has been a popular research topic in recent years. Laccase is very promising for the remediation of heavy oil pollution because it can not only convert bio-refractory hydrocarbons into less toxic or completely harmless compounds, but also accelerate the biodegradation efficiency of heavy oil. However, there are few reports on the use of laccase to enhance the biodegradation of heavy oil. In this study, we investigated the effect of laccase on the bacterial consortia degradation of heavy oil. The degradation efficiencies of bacterial consortia and the laccase-bacterial consortia were 60.6 ± 0.1% and 68.2 ± 0.6%, respectively, and the corresponding heavy oil degradation rate constants were 0.112 day−1 and 0.198 day−1, respectively. The addition of laccase increased the heavy oil biodegradation efficiency (p < 0.05) and biodegradation rate of the bacterial consortia. Moreover, gas chromatography–mass spectrometry analysis showed that the biodegradation efficiencies of the laccase-bacterial consortia for saturated hydrocarbons and aromatic hydrocarbons were 82.5 ± 0.7% and 76.2 ± 0.9%, respectively, which were 16.0 ± 0.3% and 13.0 ± 1.8% higher than those of the bacterial consortia, respectively. In addition, the degradation rate constants of the laccase-bacterial consortia for saturated hydrocarbons and aromatic hydrocarbons were 0.267 day−1 and 0.226 day−1, respectively, which were 1.07 and 1.15 times higher than those of the bacterial consortia, respectively. The degradation of C15 to C35 n-alkanes and 2 to 5-ring polycyclic aromatic hydrocarbons by laccase-bacterial consortia was higher than individual bacterial consortia. It is further seen that the addition of laccase significantly improved the biodegradation of long-chain n-alkanes of C22–C35 (p < 0.05). Overall, this study shows that the combination of laccase and bacterial consortia is an effective remediation technology for heavy oil pollution. Adding laccase can significantly improve the heavy oil biodegradation efficiency and biodegradation rate of the bacterial consortia.

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Heavy Oil Biodegradation by Mixed Bacterial Consortium of Biosurfactant-Producing and Heavy Oil-Degrading Bacteria

Cited by 14 publications

References 24 publications

Microbial Blends: Terminology Overview and Introduction of the Neologism “Skopobiota”

Microbial Blends: Terminology Overview and Introduction of the Neologism “Skopobiota”

Establecimiento de un consorcio bacteriano nativo degradador de crudo Napo

Effects of Adding Laccase to Bacterial Consortia Degrading Heavy Oil

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