scholarly journals The Effect of an Adsorbent Matrix on Recovery of Microorganisms from Hydrocarbon-Contaminated Groundwater

2021 ◽  
Vol 9 (1) ◽  
pp. 90
Author(s):  
Nicole M. Taylor ◽  
Courtney R. A. Toth ◽  
Victoria Collins ◽  
Paolo Mussone ◽  
Lisa M. Gieg
Keyword(s):  
Oil And Gas ◽  
Complex Structure ◽  
Community Analysis ◽  
Porous Polymer ◽  
Hydrocarbon Biodegradation ◽  
Contaminated Groundwater ◽  
Contaminated Aquifer ◽  
Polymer Resin ◽  
Terrestrial Environments ◽  
Porous Polymer Resin

The microbial degradation of recalcitrant hydrocarbons is an important process that can contribute to the remediation of oil and gas-contaminated environments. Due to the complex structure of subsurface terrestrial environments, it is important to identify the microbial communities that may be contributing to biodegradation processes, along with their abilities to metabolize different hydrocarbons in situ. In this study, a variety of adsorbent materials were assessed for their ability to trap both hydrocarbons and microorganisms in contaminated groundwater. Of the materials tested, a porous polymer resin (Tenax-TA) recovered the highest diversity of microbial taxa in preliminary experiments and was selected for additional (microcosm-based) testing. Oxic and anoxic experiments were prepared with groundwater collected from a contaminated aquifer to assess the ability of Tenax-TA to adsorb two environmental hydrocarbon contaminants of interest (toluene and benzene) while simultaneously providing a surface for microbial growth and hydrocarbon biodegradation. Microorganisms in oxic microcosms completely degraded both targets within 14 days of incubation, while anoxically-incubated microorganisms metabolized toluene but not benzene in less than 80 days. Community analysis of Tenax-TA-associated microorganisms revealed taxa highly enriched in sessile hydrocarbon-degrading treatments, including Saprospiraceae, Azoarcus, and Desulfoprunum, which may facilitate hydrocarbon degradation. This study showed that Tenax-TA can be used as a matrix to effectively trap both microorganisms and hydrocarbons in contaminated environmental systems for assessing and studying hydrocarbon-degrading microorganisms of interest.

scholarly journals Preconcentration of Cu(II), Ni(II) and Co(II) with 1-phenyl-3-methyl-4-stearoyl-5-pyrazolone loaded on a porous polymer resin.

1993 ◽  
Vol 42 (11) ◽  
pp. 733-736
Author(s):  
Kenji SATO ◽  
Hiroyuki OKUYAMA ◽  
Shigeyuki TANAKA ◽  
Yoshifumi AKAMA
Keyword(s):  
Porous Polymer ◽  
Polymer Resin ◽  
Porous Polymer Resin

On-site and in situ bioremediation of wood-preservative contaminated groundwater

2000 ◽  
Vol 42 (5-6) ◽  
pp. 371-376 ◽  
Author(s):  
J.A. Puhakka ◽  
K.T. Järvinen ◽  
J.H. Langwaldt ◽  
E.S. Melin ◽  
M.K. Männistö ◽  
...  
Keyword(s):  
Iron Oxidation ◽  
Wood Preservative ◽  
Pilot Scale ◽  
High Rate ◽  
Contaminated Groundwater ◽  
Groundwater Temperature ◽  
In Situ Bioremediation ◽  
Contaminated Aquifer ◽  
Fluidized Bed Process

This paper reviews ten years of research on on-site and in situ bioremediation of chlorophenol contaminated groundwater. Laboratory experiments on the development of a high-rate, fluidized-bed process resulted in a full-scale, pump-and-treat application which has operated for several years. The system operates at ambient groundwater temperature of 7 to 9°C at 2.7 d hydraulic retention time and chlorophenol removal efficiencies of 98.5 to 99.9%. The microbial ecology studies of the contaminated aquifer revealed a diverse chlorophenol-degrading community. In situ biodegradation of chlorophenols is controlled by oxygen availability, only. Laboratory and pilot-scale experiments showed the potential for in situ aquifer bioremediation with iron oxidation and precipitation as a potential problem.

scholarly journals Unraveling the Metabolic Potential of Asgardarchaeota in a Sediment from the Mediterranean Hydrocarbon-Contaminated Water Basin Mar Piccolo (Taranto, Italy)

2021 ◽  
Vol 9 (4) ◽  
pp. 859
Author(s):  
Andrea Firrincieli ◽  
Andrea Negroni ◽  
Giulio Zanaroli ◽  
Martina Cappelletti
Keyword(s):  
Archaeal Community ◽  
Hydrocarbon Biodegradation ◽  
Natural Ecosystems ◽  
Central Mediterranean ◽  
Metabolic Potential ◽  
Metabolic Role ◽  
Sequencing Studies ◽  
Terrestrial Environments ◽  
Metagenome Sequencing ◽  
Aliphatic And Aromatic Hydrocarbons

Increasing number of metagenome sequencing studies have proposed a central metabolic role of still understudied Archaeal members in natural and artificial ecosystems. However, their role in hydrocarbon cycling, particularly in the anaerobic biodegradation of aliphatic and aromatic hydrocarbons, is still mostly unknown in both marine and terrestrial environments. In this work, we focused our study on the metagenomic characterization of the archaeal community inhabiting the Mar Piccolo (Taranto, Italy, central Mediterranean) sediments heavily contaminated by petroleum hydrocarbons and polychlorinated biphenyls (PCB). Among metagenomic bins reconstructed from Mar Piccolo microbial community, we have identified members of the Asgardarchaeota superphylum that has been recently proposed to play a central role in hydrocarbon cycling in natural ecosystems under anoxic conditions. In particular, we found members affiliated with Thorarchaeota, Heimdallarchaeota, and Lokiarchaeota phyla and analyzed their genomic potential involved in central metabolism and hydrocarbon biodegradation. Metabolic prediction based on metagenomic analysis identified the malonyl-CoA and benzoyl-CoA routes as the pathways involved in aliphatic and aromatic biodegradation in these Asgardarchaeota members. This is the first study to give insight into the archaeal community functionality and connection to hydrocarbon degradation in marine sediment historically contaminated by hydrocarbons.

Microbial degradation of benzene, toluene, ethylbenzene and xylene isomers (BTEX) contaminated groundwater in Korea

2001 ◽  
Vol 44 (7) ◽  
pp. 165-171 ◽  
Author(s):  
S. W. Chang ◽  
H. J. La ◽  
S. J. Lee
Keyword(s):  
Potent Inhibitor ◽  
Inhibitory Effect ◽  
Contaminated Groundwater ◽  
Interaction Patterns ◽  
Contaminated Aquifer ◽  
Substrate Interaction ◽  
Substrate Degradation ◽  
Benzene Toluene ◽  
Xylene Isomers ◽  
Btex Compounds

A mixed culture derived from a gasoline-contaminated aquifer in Korea was enriched on toluene at 25°C. A study was conducted to characterize the substrate interaction of BTEX by toluene-enriched consortia and determine the effects of initial BTEX concentration on BTEX degradation. Substrate degradation patterns in individual aromatics were found to differ significantly from patterns for aromatics in mixtures. In the experiment of a single substrate, toluene was degraded fastest, followed by benzene, ethylbenzene, and the xylenes. In BTEX mixtures, degradation followed the order of toluene, ethylbenzene, benzene, and the xylenes. The studies conducting with toluene-enriched consortia evaluated substrate interactions by the concurrent presence of multiple BTEX compounds and revealed a range of substrate interaction patterns including no interaction, stimulation, inhibition, and cometabolism. The simultaneous presence of benzene and toluene were degraded with a slight inhibitory effect on each other. Ethylbenzene was shown to be the most potent inhibitor of BTEX degradation. p-xylene also inhibited the degradation of benzene, toluene, and ethylbenzene, whereas the presence of either benzene or toluene enhanced the degradation of ethylbenzene and the xylenes.

Removal of dissolved and dispersed hydrocarbons from oil and gas produced water with Macro Porous Polymer Extraction technology to reduce toxicity and allow water reuse

2010 ◽  
Vol 50 (1) ◽  
pp. 637 ◽  
Author(s):  
Dick Meijer ◽  
Chris Madin
Keyword(s):  
Water Reuse ◽  
Oil And Gas ◽  
Produced Water ◽  
Oxygen Demand ◽  
Oil And Gas Industry ◽  
Industrial Applications ◽  
The Philippines ◽  
Porous Polymer ◽  
Extraction Technology ◽  
The North

Legislation worldwide and current technologies used in the treatment of offshore oil and gas/condensate produced water are mainly aimed at the removal of dispersed hydrocarbons (dispersed oil). From the beginning of this century, new insights in the North Sea area revealed that specific contaminants in produced water are toxic and their impact on the environment was assessed. This insight was later supported by work in the Philippines. A comparison of water with the same total organic carbon (TOC) levels showed in one case that the unknown toxic content was higher with an unexpected disastrous effect on the biocultures. Overall parameters like biological, chemical and total oxygen demand (BOD, COD and TOC) are of no value in identifying and managing the toxic content of waste and produced water streams. New extraction based technologies such as the Macro Porous Polymer Extraction (MPPE) technology appear to remove dispersed and dissolved toxic constituents and reduce the environmental impact. Industrial applications show a >99% toxic content reduction in produced water streams. A recent application (at Woodside Petroleum’s Pluto LNG project) is described where the ultimate reuse of produced water was as demineralised water in an LNG plant. Emerging potential is presented for floating LNG plants currently investigated in conceptual studies by the oil and gas industry. Finally, fundamental technological mechanisms are presented that are required to meet zero harmful discharge legislation.

scholarly journals Sedimentation-capacity model of the subsalt deposits of the Southern Urals and adjoining territories

Georesursy ◽  
2019 ◽  
Vol 21 (2) ◽  
pp. 94-109
Author(s):  
Valentina A. Zhemchugova ◽  
Grigoriy G. Akhmanov ◽  
Yuri V. Naumchev ◽  
Viktor V. Pankov ◽  
Evgenia E. Karnyushina
Keyword(s):  
Large Scale ◽  
Oil And Gas ◽  
Complex Structure ◽  
Southern Urals ◽  
Carbonate Sediments ◽  
Reservoir Properties ◽  
The Southern Urals ◽  
Oil And Gas Exploration ◽  
Capacity Model ◽  
Hydrocarbon Productivity

The junction zone of the Caspian syneclise, the Russian Plate and the Pre-Ural trough is characterized by a complex structure. It has been studied in some detail during large-scale geological, geophysical, and drilling operations in the search for mineral deposits. Subsalt deposits are associated with the main prospects for the growth of hydrocarbon reserves in this region. This makes it important to rethink the available data and conduct scientific analysis to identify patterns of formation of sedimentary complexes and an integrated assessment of their possible hydrocarbon productivity by means of sedimentation modeling. The structure and history of the formation of five large sedimentary complexes: the Ordovician-Lower Devonian, the Central Middle Devonian, the Frasnian-Tournaisian, the Visean-Upper Carboniferous, and the Permian are considered in detail. For each complex, a structural-formational position and sedimentation conditions are determined, which should determine the hydrocarbon productivity of local objects. The revealed relationship between the conditions of carbonate sediments accumulation and their potential reservoir properties served as the basis for forecasting the productivity of regional natural reservoirs. The paper presents a generalized model of the formation of subsalt strata and the forecast of the spatial distribution of different facies deposits, which play the role of accumulating and preserving strata. The results obtained are applicable in the practice of oil and gas exploration in the region

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