Modeling natural attenuation of petroleum hydrocarbon contamination using alternate electron acceptors: Case study comparing bioplume iii with BIOSCREEN

2000 ◽  
Vol 10 (4) ◽  
pp. 27-47
Author(s):  
Candy R. Akins ◽  
Jami A. Striegel ◽  
Dee Ann Sanders ◽  
John N. Veenstra
Keyword(s):  
Natural Attenuation ◽  
Petroleum Hydrocarbon ◽  
Electron Acceptors ◽  
Hydrocarbon Contamination ◽  
Petroleum Hydrocarbon Contamination ◽  
Alternate Electron Acceptors

scholarly journals Petroleum Hydrocarbon Contamination in Terrestrial Ecosystems—Fate and Microbial Responses

Molecules ◽  
2019 ◽  
Vol 24 (18) ◽  
pp. 3400 ◽  
Author(s):  
Adam Truskewycz ◽  
Taylor D. Gundry ◽  
Leadin S. Khudur ◽  
Adam Kolobaric ◽  
Mohamed Taha ◽  
...  
Keyword(s):  
Natural Attenuation ◽  
Contaminated Soils ◽  
Petroleum Hydrocarbons ◽  
Petroleum Hydrocarbon ◽  
Terrestrial Ecosystems ◽  
Hydrocarbon Contamination ◽  
Microbial Consortia ◽  
Metagenomic Sequencing ◽  
Petroleum Hydrocarbon Contamination ◽  
The Impact

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.

scholarly journals Characterization of microbial response to petroleum hydrocarbon contamination in a lacustrine ecosystem

2021 ◽  
Author(s):  
Emilio D’Ugo ◽  
Milena Bruno ◽  
Arghya Mukherjee ◽  
Dhrubajyoti Chattopadhyay ◽  
Roberto Giuseppetti ◽  
...  
Keyword(s):  
Oil Spill ◽  
Petroleum Hydrocarbon ◽  
Oil Spills ◽  
Oil Pollution ◽  
Primary Source ◽  
Hydrocarbon Contamination ◽  
Petroleum Hydrocarbon Contamination ◽  
Microbial Response ◽  
Pollution Event ◽  
Hydrocarbonoclastic Potential

AbstractMicrobiomes of freshwater basins intended for human use remain poorly studied, with very little known about the microbial response to in situ oil spills. Lake Pertusillo is an artificial freshwater reservoir in Basilicata, Italy, and serves as the primary source of drinking water for more than one and a half million people in the region. Notably, it is located in close proximity to one of the largest oil extraction plants in Europe. The lake suffered a major oil spill in 2017, where approximately 400 tons of crude oil spilled into the lake; importantly, the pollution event provided a rare opportunity to study how the lacustrine microbiome responds to petroleum hydrocarbon contamination. Water samples were collected from Lake Pertusillo 10 months prior to and 3 months after the accident. The presence of hydrocarbons was verified and the taxonomic and functional aspects of the lake microbiome were assessed. The analysis revealed specialized successional patterns of lake microbial communities that were potentially capable of degrading complex, recalcitrant hydrocarbons, including aromatic, chloroaromatic, nitroaromatic, and sulfur containing aromatic hydrocarbons. Our findings indicated that changes in the freshwater microbial community were associated with the oil pollution event, where microbial patterns identified in the lacustrine microbiome 3 months after the oil spill were representative of its hydrocarbonoclastic potential and may serve as effective proxies for lacustrine oil pollution.

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