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Davis, C.O.; Cort, Todd; Dai, David Yun; Illangasekare, Tissa H.; Munakata-Marr, Junko

doi:10.1023/a:1027376318530

Cited by 43 publications

(2 citation statements)

References 30 publications

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“…Excess moisture may also impede bioremediation by saturating soil, reducing the capacity of O 2 to dissolve into the water. This causes aerobic soils to become anaerobic [50]. Lahel et al observed >20% decrease in remediation efficiency of diesel when moisture was increased from 10% to 30% in a series of microcosm experiments [51].…”

Section: Physiochemical Factors Affecting Natural Attenuation Of Pmentioning

confidence: 99%

Petroleum Hydrocarbon Contamination in Terrestrial Ecosystems—Fate and Microbial Responses

et al. 2019

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Petroleum hydrocarbons represent the most frequent environmental contaminant. The introduction of petroleum hydrocarbons into a pristine environment immediately changes the nature of that environment, resulting in reduced ecosystem functionality. Natural attenuation represents the single, most important biological process which removes petroleum hydrocarbons from the environment. It is a process where microorganisms present at the site degrade the organic contaminants without the input of external bioremediation enhancers (i.e., electron donors, electron acceptors, other microorganisms or nutrients). So successful is this natural attenuation process that in environmental biotechnology, bioremediation has developed steadily over the past 50 years based on this natural biodegradation process. Bioremediation is recognized as the most environmentally friendly remediation approach for the removal of petroleum hydrocarbons from an environment as it does not require intensive chemical, mechanical, and costly interventions. However, it is under-utilized as a commercial remediation strategy due to incomplete hydrocarbon catabolism and lengthy remediation times when compared with rival technologies. This review aims to describe the fate of petroleum hydrocarbons in the environment and discuss their interactions with abiotic and biotic components of the environment under both aerobic and anaerobic conditions. Furthermore, the mechanisms for dealing with petroleum hydrocarbon contamination in the environment will be examined. When petroleum hydrocarbons contaminate land, they start to interact with its surrounding, including physical (dispersion), physiochemical (evaporation, dissolution, sorption), chemical (photo-oxidation, auto-oxidation), and biological (plant and microbial catabolism of hydrocarbons) interactions. As microorganism (including bacteria and fungi) play an important role in the degradation of petroleum hydrocarbons, investigations into the microbial communities within contaminated soils is essential for any bioremediation project. This review highlights the fate of petroleum hydrocarbons in tertial environments, as well as the contributions of different microbial consortia for optimum petroleum hydrocarbon bioremediation potential. The impact of high-throughput metagenomic sequencing in determining the underlying degradation mechanisms is also discussed. This knowledge will aid the development of more efficient, cost-effective commercial bioremediation technologies.

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Section: Physiochemical Factors Affecting Natural Attenuation Of Pmentioning

confidence: 99%

Petroleum Hydrocarbon Contamination in Terrestrial Ecosystems—Fate and Microbial Responses

et al. 2019

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“…Consequently, it will be challenging to obtain biodegradation rates from the site and relying on literature values may be necessary. However, reaction rates obtained under laboratory conditions are not directly applicable on a field scale and rates can vary between sites and change over time [69,78]. As such, incorporating parameters such as biodegradation rates and electron acceptor consumption, presents significant challenges in the modeling process.…”

Section: Challenges In Reactive Transport Modellingmentioning

confidence: 99%

Field investigations and reactive transport modelling of biodegrading coal tar compounds at a complex former manufactured gas plant

Faber

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Groundwater contamination by coal tar and other aromatic hydrocarbon mixtures is a global issue with significant environmental and public health implications. Coal tar, a dense liquid, can persist as a long-term source of groundwater pollution when it infiltrates the subsurface after being deposited on the ground's surface. Hydrocarbons dissolve from the coal tar into the groundwater, where they undergo complex physical, biological and chemical transformations that depend on site-specific conditions. This study focuses on the Griftpark, a former gas manufacturing site in Utrecht, that is severely contaminated with coal tar. The site features numerous chemical and physical complexities, that lead to a lack of comprehensive field data. Our research seeks to provide valuable knowledge for risk assessments and remediation strategies for such complex sites that are common in the real world, but not often studied in the academically. Our findings demonstrate that employing conventional investigation techniques yields valuable information about physical, chemical and biological conditions at the site. Subsequently, we developed a numerical reactive transport model that effectively captures and qualitatively describes significant subsurface processes. The model highlights the potential effectiveness of monitored natural attenuation, a method that relies on naturally occurring processes (including degradation facilitated by microbes) to reduce contaminant concentrations, as a management option for Griftpark. Success depends on factors like the volume of contaminated soil and degradation rates. This study underscores the value of combining field research and numerical modeling to gain insights into complex sites like Griftpark. Such insights support the transition from active management to natural attenuation, contributing to more sustainable and cost-effective groundwater remediation strategies.

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Biodegradation of Kerosene and Diesel

Speight¹,

Arjoon²

2012

Bioremediation of Petroleum and Petroleum Products

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Untitled

Cited by 43 publications

References 30 publications

Petroleum Hydrocarbon Contamination in Terrestrial Ecosystems—Fate and Microbial Responses

Petroleum Hydrocarbon Contamination in Terrestrial Ecosystems—Fate and Microbial Responses

Field investigations and reactive transport modelling of biodegrading coal tar compounds at a complex former manufactured gas plant

Biodegradation of Kerosene and Diesel

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