Bioremediation of marine oil spills

Prince, Roger C.

doi:10.1016/s0167-7799(97)01033-0

Cited by 69 publications

(8 citation statements)

References 31 publications

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“…Temperature, oxygen availability and the presence of nutrients are the factors influencing the rate of bioremediation. For instance, the lack of oxygen is usually the limiting factor for in-situ bioremediation [14,15,19].…”

Section: Introductionmentioning

confidence: 99%

Oil Spill Cleanup from Sea Water by Sorbent Materials

et al. 2005

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Three sorbents were compared in order to determine their potential for oil spill cleanup. Polypropylene nonwoven web, rice hull, and bagasse with two different particle sizes were evaluated in terms of oil sorption capacities and oil recovery efficiencies. Polypropylene can sorb almost 7 to 9 times its weight from different oils. Bagasse, 18 to 45 mesh size, follows polypropylene as the second sorbent in oil spill cleanup. Bagasse, 14 to 18 mesh size, and rice hull have comparable oil sorption capacities, which are lower than those of the two former sorbents. It was found that oil viscosity plays an important role in oil sorption by sorbents. All adsorbents used in this work could remove the oil from the surface of the water preferentially.

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Section: Introductionmentioning

confidence: 99%

Oil Spill Cleanup from Sea Water by Sorbent Materials

et al. 2005

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“…5 On the other hand, biofilms of particular bacterial species bear important advantages in certain applications such as biomineralization, 6 wastewater treatment, 7 and bioremediation of oil and gasoline spills. 8 Thus, it is critically important to elucidate and characterize the physical mechanisms involved in the formation, development, and dispersion of bacterial biofilms.…”

Section: Karigmentioning

confidence: 99%

“…Due to these effects, biofilms introduce important challenges in clinical and industrial settings, including persistent infection of human tissues, increased tolerance to bactericides, and biofouling and clogging problems in flow systems and pipelines [5]. On the other hand, biofilms of particular bacterial species bear important advantages in certain applications such as biomineralization [6], wastewater treatment [7], and bioremediation of oil and gasoline spills [8]. Thus, it is critically important to elucidate and characterize the physical mechanisms involved in the formation, development, and dispersion of bacterial biofilms.…”

Section: Introductionmentioning

confidence: 99%

Interplay of physical mechanisms and biofilm processes: review of microfluidic methods

et al. 2015

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Bacteria in natural and artificial environments often reside in self-organized, integrated communities known as biofilms. Biofilms are highly structured entities consisting of bacterial cells embedded in a matrix of self-produced extracellular polymeric substances (EPS). The EPS matrix acts like a biological ‘glue’ enabling microbes to adhere to and colonize a wide range of surfaces. Once integrated into biofilms, bacterial cells can withstand various forms of stress such as antibiotics, hydrodynamic shear and other environmental challenges. Because of this, biofilms of pathogenic bacteria can be a significant health hazard often leading to recurrent infections. Biofilms can also lead to clogging and material degradation; on the other hand they are an integral part of various environmental processes such as carbon sequestration and nitrogen cycles. There are several determinants of biofilm morphology and dynamics, including the genotypic and phenotypic states of constituent cells and various environmental conditions. Here, we present an overview of the role of relevant physical processes in biofilm formation, including propulsion mechanisms, hydrodynamic effects, and transport of quorum sensing signals. We also provide a survey of microfluidic techniques utilized to unravel the associated physical mechanisms. Further, we discuss the future research areas for exploring new ways to extend the scope of the microfluidic approach in biofilm studies.

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“…Surface active agents, i.e., surfactants, in the form of emulsifiers or dispersants are used to “dissolve” oil into water rather than remove oil . Surfactants decrease the oil–water interfacial tension and stabilize the emulsion droplets which should increase the bioavailability of the oil for microbial degradation . The effectiveness of Corexit, one of the main dispersants deployed in the cleanup of Deepwater Horizon, and its impact on human health and microbial degradation, have been studied in detail .…”

Section: Introductionmentioning

confidence: 99%

“…Some of these findings have been refuted, pointing to lack of consistency in lab studies, the high thresholds used in the studies, and that some human exposure results are based solely on self-reporting . Dispersing the oil slick into oil droplets is an effective method for oil spill remediation and can lead to increased biodegradation and has been considered as a primary method for cleanup of large oil spills.…”

Section: Introductionmentioning

confidence: 99%

Nano-enhanced Bioremediation for Oil Spills: A Review

2021

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Oil seepage and spills have lasting detrimental effects on the environment, especially on nearby marine ecosystems. Despite quick and safe removal of contaminating oil being of utmost importance, remediation methods have remained largely unchanged over the last 20+ years. Removal methods such as skimmers, in situ burning, and sorbents can be difficult to implement in inclement weather. Marine microorganisms consume spilled oil as a primary energy source in a method known as bioremediation. Recently the introduction of nanoparticles to areas contaminated by oil has emerged as a potential method to enhance the efficacy of oil degradation by marine microorganisms. Nanoparticles have been primarily utilized as magnetic sorbents but can also act as emulsifiers, increasing the bioavailability of the oil by giving microbes a surface (droplets) to which they can attach and facilitate proliferation. Emulsification increases the oil−water interfacial area and often leads to an increase in the amount of oil degraded by microorganisms. Nanoenhanced bioremediation is effective on a variety of oil compositions and is minimally impacted by weather. It offers a sustainable alternative to traditional remediation methods, i.e., chemical dispersants, sorbents, and in situ burning, which are often toxic and ineffective.

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Bioremediation of marine oil spills

Cited by 69 publications

References 31 publications

Oil Spill Cleanup from Sea Water by Sorbent Materials

Oil Spill Cleanup from Sea Water by Sorbent Materials

Interplay of physical mechanisms and biofilm processes: review of microfluidic methods

Nano-enhanced Bioremediation for Oil Spills: A Review

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