Hexadecane aqueous emulsion characterization and uptake by an oil-degrading microbial consortium

Medina-Moreno, S.A.; Jiménez-González, A.; Gutiérrez-Rojas, M.; Lizardi-Jiménez, Manuel Alejandro

doi:10.1016/j.ibiod.2013.05.018

Cited by 20 publications

(4 citation statements)

References 19 publications

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“…For systems with microscale heterogeneity, such as porous media and multiphase dispersions, the apparent reaction rate incorporates the effects of the microscale structure and transport mechanisms and is, therefore, lower than the intrinsic (transport-free) reaction rate [ 57 ]. This important issue has recently attracted the attention of researchers working on the biodegradation of crude oil [ 58 , 59 , 60 , 61 , 62 , 63 , 64 ]. For example, it has been nicely demonstrated that the apparent biodegradation rate increases with decreasing droplet size, while keeping all other system parameters constant [ 30 , 58 , 61 ].…”

Section: Resultsmentioning

confidence: 99%

“…This important issue has recently attracted the attention of researchers working on the biodegradation of crude oil [ 58 , 59 , 60 , 61 , 62 , 63 , 64 ]. For example, it has been nicely demonstrated that the apparent biodegradation rate increases with decreasing droplet size, while keeping all other system parameters constant [ 30 , 58 , 61 ]. However, existing kinetic data for apparent reaction rates of oily compounds are not consistent with the CPM formulation, and can only be used to obtain lower bounds for the Damköhler and Thiele numbers.…”

Section: Resultsmentioning

confidence: 99%

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Theoretical Insight into the Biodegradation of Solitary Oil Microdroplets Moving through a Water Column

et al. 2018

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In the aftermath of oil spills in the sea, clouds of droplets drift into the seawater column and are carried away by sea currents. The fate of the drifting droplets is determined by natural attenuation processes, mainly dissolution into the seawater and biodegradation by oil-degrading microbial communities. Specifically, microbes have developed three fundamental strategies for accessing and assimilating oily substrates. Depending on their affinity for the oily phase and ability to proliferate in multicellular structures, microbes might either attach to the oil surface and directly uptake compounds from the oily phase, or grow suspended in the aqueous phase consuming solubilized oil, or form three-dimensional biofilms over the oil–water interface. In this work, a compound particle model that accounts for all three microbial strategies is developed for the biodegradation of solitary oil microdroplets moving through a water column. Under a set of educated hypotheses, the hydrodynamics and solute transport problems are amenable to analytical solutions and a closed-form correlation is established for the overall dissolution rate as a function of the Thiele modulus, the Biot number and other key parameters. Moreover, two coupled ordinary differential equations are formulated for the evolution of the particle size and used to investigate the impact of the dissolution and biodegradation processes on the droplet shrinking rate.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Theoretical Insight into the Biodegradation of Solitary Oil Microdroplets Moving through a Water Column

et al. 2018

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“…Subsequently, the Gutiérrez-Rojas working group showed the UAMI consortium ability to uptake Maya crude oil (Medina-Moreno, et al, 2005). Furthermore, the UAMI consortium has shown that it can uptake diesel, hexadecane, pyrene and phenanthrene using airlift bioreactors (Hernández-Martínez et al, 2019;Medina-Moreno et al, 2013;Nápoles-Álvarez et al, 2017). Meanwhile, the efficiency of consortiums can be improved by using bioreactors, such as airlift bioreactors (Nápoles-Álvarez et al, 2017;Suárez-García et al, 2019).…”

Section: Aliphaticmentioning

confidence: 99%

Bioreactors for remediation of hydrocarbons in rivers and lagoons of San Luis Potosí

Sandoval-Herazo¹,

Espinosa-Reyes²,

Vallejo-Pérez³

et al. 2020

Rev.Mex.Ing.Quim.

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“…Biosurfactants enhance the solubility and bioavailability of hydrophobic compounds by emulsification (Medina-Moreno et al 2013) and by reverting some of the aging effects (Bordoloi andKonwar 2009, Tyagi et al 2011). As such, the introduction of biosurfactant producers should improve the biodegradation rates of oil hydrocarbons by increasing their bioaccessibility and bioavailability to the organisms at the impacted sites.…”

Section: Introductionmentioning

confidence: 99%

Bioremediation of Soils From Oil Spill Impacted Sites Using Bioaugmentation With Biosurfactants Producing, Native, Free-Living Nitrogen Fixing Bacteria

Vargas

Carmona

Moreno

et al. 2017

Rev. Int. Contam. Ambie.

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Oil spills are the most common source of environmental damage in areas with oil extraction activities. Bioaugmentation is a bioremediation technology that involves increasing microbiotas that can remove contaminant compounds from soils or water. This can be achieved by supplying exogenous microorganisms or by increasing the abundance of native microorganisms able to remove the contaminants. As biosurfactants enhance the solubility and bioavailability of hydrophobic compounds, the addition of native bacteria that produce biosurfactants may improve the rates of hydrocarbons biodegradation at oil spill impacted sites. The objective of this study was to investigate the effectiveness of using the bioaugmentation of native, free-living nitrogen fixing bacteria (NFB) that are able to remove hydrocarbons and produce biosurfactant compounds, to bioremediate soils at long term oil spill impacted sites containing total hydrocarbon (TH) levels of 120 000 ppm. For this study, two NFB that produce biosurfactants were selected from a group of 24 previously isolated from a long-term oil spill impacted site. After 16 months of bioaugmentation, the hydrocarbons removal reached 80 %. The NFB count increased from 13×10 4 colony-forming units (CFU) to 2×10 9 CFU, and the total bacterial population increased from 5×10 4 CFU to 22×10 11 CFU. According to literature, this is the first bioaugmentation study using native NFB biosurfactant producers to bioremediate soils from aged oil spill impacted sites. As such, these results demonstrate the potential of this bioaugmentation strategy for the bioremediation of oil spill impacted sites, especially those low in nitrogen.Palabras clave: ramnolípido, índice de emulsificación, biopila, intemperizado, NFB Rev. Int. Contam. Ambie. 33 (Especial Biotecnología e ingeniería ambiental)

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Hexadecane aqueous emulsion characterization and uptake by an oil-degrading microbial consortium

Cited by 20 publications

References 19 publications

Theoretical Insight into the Biodegradation of Solitary Oil Microdroplets Moving through a Water Column

Theoretical Insight into the Biodegradation of Solitary Oil Microdroplets Moving through a Water Column

Bioreactors for remediation of hydrocarbons in rivers and lagoons of San Luis Potosí

Bioremediation of Soils From Oil Spill Impacted Sites Using Bioaugmentation With Biosurfactants Producing, Native, Free-Living Nitrogen Fixing Bacteria

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