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González-Benítez N, Bautista LF, Simarro R, Vargas C, Salmerón A, Murillo Y, Molina MC. Bacterial diversity in aqueous/sludge phases within diesel fuel storage tanks. World J Microbiol Biotechnol 2020; 36:180. [PMID: 33164118 DOI: 10.1007/s11274-020-02956-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 10/27/2020] [Indexed: 10/23/2022]
Abstract
Diesel fuel storage tanks are not hostile environments for microorganisms and tend to form sludges in the water deposited at the bottom of the tanks. The lack of nutrient, carbon and energy limitations within these habitats boost the abundance and the metabolic activity of microorganisms providing microbial hotspots with high growing rates of diesel degradation (0.10 ± 0.021 d-1). Five different Phyla (Thermotogae, Spirochaetes, Firmicutes, Bacteroidetes Proteobacteria) were identified within the aqueous/sludge phase from in situ diesel storage tanks, by cultured independent molecular surveys using the 16S rDNA gene fragment. The identified dominant strains were Geotoga aestuarianus, Flavobacterium ceti, Spirochaeta thermophila, Propionispira arboris, Sporobacterium olearium and Dysgonomonas genera. The altitude where the storage tanks are located and the organic carbon concentration within the aqueous/sludge phases affected the bacterial diversity. Therefore, the more diverse the microbial communities are, the more probability of the presence of bacteria with capacity to metabolized diesel and eliminate organic matter. Despite, only phosphate showed an effect on the bacterial distribution within the storage tanks, there was an apparent lack of deterministic process in structuring microbial communities. Consequently, preventative protocols are a priority to avoid the microbial growth within diesel fuel storage tanks. A new focus of this worldwide problem within the oil industry would be to explore deeply the wide range of metabolic and adaptive capacities of these microorganisms. These microbial consortia are potential tools with new specific services to apply in bioremediation among others.
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Affiliation(s)
- Natalia González-Benítez
- Department of Biology, Geology, Physics and Inorganic Chemistry, ESCET, Universidad Rey Juan Carlos., 28933, Móstoles, Madrid, Spain.
| | - Luis Fernando Bautista
- Department of Chemical and Environmental Technology, ESCET, Universidad Rey Juan Carlos, 28933, Móstoles, Madrid, Spain
| | - Raquel Simarro
- Department of Biology, Geology, Physics and Inorganic Chemistry, ESCET, Universidad Rey Juan Carlos., 28933, Móstoles, Madrid, Spain
| | - Carolina Vargas
- Department of Chemical and Environmental Technology, ESCET, Universidad Rey Juan Carlos, 28933, Móstoles, Madrid, Spain
| | - Armando Salmerón
- Repsol Technology Centre, C/ Agustín de Betancourt, s/n., 28935, Móstoles, Madrid, Spain
| | - Yolanda Murillo
- Repsol Technology Centre, C/ Agustín de Betancourt, s/n., 28935, Móstoles, Madrid, Spain
| | - María Carmen Molina
- Department of Biology, Geology, Physics and Inorganic Chemistry, ESCET, Universidad Rey Juan Carlos., 28933, Móstoles, Madrid, Spain
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Draft Genome Sequences of Kosmotoga sp. Strain DU53 and Kosmotoga arenicorallina S304. GENOME ANNOUNCEMENTS 2016; 4:4/3/e00570-16. [PMID: 27313308 PMCID: PMC4911487 DOI: 10.1128/genomea.00570-16] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Here, we announce the draft genome sequences of two thermophilic Thermotogae bacteria: Kosmotoga sp. strain DU53, isolated from a continental oil reservoir, and Kosmotoga arenicorallina, isolated from hydrothermal sediments. The sequences will provide further insight into evolution of the Kosmotogales.
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Evaluating the Metal Tolerance Capacity of Microbial Communities Isolated from Alberta Oil Sands Process Water. PLoS One 2016; 11:e0148682. [PMID: 26849649 PMCID: PMC4743850 DOI: 10.1371/journal.pone.0148682] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2015] [Accepted: 01/20/2016] [Indexed: 12/17/2022] Open
Abstract
Anthropogenic activities have resulted in the intensified use of water resources. For example, open pit bitumen extraction by Canada’s oil sands operations uses an estimated volume of three barrels of water for every barrel of oil produced. The waste tailings–oil sands process water (OSPW)–are stored in holding ponds, and present an environmental concern as they are comprised of residual hydrocarbons and metals. Following the hypothesis that endogenous OSPW microbial communities have an enhanced tolerance to heavy metals, we tested the capacity of planktonic and biofilm populations from OSPW to withstand metal ion challenges, using Cupriavidus metallidurans, a known metal-resistant organism, for comparison. The toxicity of the metals toward biofilm and planktonic bacterial populations was determined by measuring the minimum biofilm inhibitory concentrations (MBICs) and planktonic minimum inhibitory concentrations (MICs) using the MBEC ™ assay. We observed that the OSPW community and C. metallidurans had similar tolerances to 22 different metals. While thiophillic elements (Te, Ag, Cd, Ni) were found to be most toxic, the OSPW consortia demonstrated higher tolerance to metals reported in tailings ponds (Al, Fe, Mo, Pb). Metal toxicity correlated with a number of physicochemical characteristics of the metals. Parameters reflecting metal-ligand affinities showed fewer and weaker correlations for the community compared to C. metallidurans, suggesting that the OSPW consortia may have developed tolerance mechanisms toward metals present in their environment.
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Demeter MA, Lemire J, George I, Yue G, Ceri H, Turner RJ. Harnessing oil sands microbial communities for use in ex situ naphthenic acid bioremediation. CHEMOSPHERE 2014; 97:78-85. [PMID: 24325800 DOI: 10.1016/j.chemosphere.2013.11.016] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 11/06/2013] [Accepted: 11/10/2013] [Indexed: 06/03/2023]
Abstract
The caustic hot water extraction process used to release bitumen from the Alberta oil sands generates large volumes of tailings waste, or oil sands process water (OSPW). OSPW contains several components of environmental concern including diluents, polyaromatic hydrocarbons, heavy metals, and naphthenic acids (NAs); the latter are of particular concern as they are acutely toxic to aquatic organisms and mammals. Studies have demonstrated that the naturally occurring OSPW bacteria are capable of metabolizing the NAs. However, this in situ process takes place over hundreds of years, and is incomplete, leaving a recalcitrant fraction of NAs intact. In this study we explore options for recovering and harnessing the naturally occurring OSPW bacteria for potential future use in an aerobic ex situ OSPW treatment system. Here we evaluate our recovered microbes on their ability to degrade two model NAs, cyclohexane carboxylic acid and cyclohexane acetic acid. Using OSPW as a source for a bacterial inoculum, we were able to compare single and multispecies OSPW cultures, grown as either a biofilm, or as a planktonic suspension. Furthermore, we examined the effect of available nutrients on the ability of these cultures to degrade NAs. All biofilms were grown using the Calgary Biofilm Device. GC-MS, and GC-FID reveal that multispecies biofilm and planktonic cultures are each capable of degrading both NAs; a trait not observed for single species cultures. Moreover, complementary carbon sources have a tangible effect on the ability of the cultures to initiate the degradation of the NAs.
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Affiliation(s)
- Marc A Demeter
- Department of Biological Sciences, University of Calgary, Alberta T2N 1N4, Canada; Biofilm Research Group, University of Calgary, Alberta T2N 1N4, Canada; Institute for Sustainable Energy, Environment, and Economy, University of Calgary, Alberta T2N 1N4, Canada
| | - Joe Lemire
- Department of Biological Sciences, University of Calgary, Alberta T2N 1N4, Canada; Biofilm Research Group, University of Calgary, Alberta T2N 1N4, Canada
| | - Iain George
- Department of Biological Sciences, University of Calgary, Alberta T2N 1N4, Canada; Biofilm Research Group, University of Calgary, Alberta T2N 1N4, Canada
| | - Gordon Yue
- Department of Biological Sciences, University of Calgary, Alberta T2N 1N4, Canada; Biofilm Research Group, University of Calgary, Alberta T2N 1N4, Canada
| | - Howard Ceri
- Department of Biological Sciences, University of Calgary, Alberta T2N 1N4, Canada; Biofilm Research Group, University of Calgary, Alberta T2N 1N4, Canada; Institute for Sustainable Energy, Environment, and Economy, University of Calgary, Alberta T2N 1N4, Canada
| | - Raymond J Turner
- Department of Biological Sciences, University of Calgary, Alberta T2N 1N4, Canada; Biofilm Research Group, University of Calgary, Alberta T2N 1N4, Canada; Institute for Sustainable Energy, Environment, and Economy, University of Calgary, Alberta T2N 1N4, Canada.
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Foght JM, Siddique T, Gieg LM. Protocols for Handling, Storing, and Cultivating Oil Sands Tailings Ponds Materials for Microbial and Molecular Biological Study. SPRINGER PROTOCOLS HANDBOOKS 2014. [DOI: 10.1007/8623_2014_26] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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Kumaraswamy R, Ebert S, Gray MR, Fedorak PM, Foght JM. Molecular- and cultivation-based analyses of microbial communities in oil field water and in microcosms amended with nitrate to control H2S production. Appl Microbiol Biotechnol 2010; 89:2027-38. [DOI: 10.1007/s00253-010-2974-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2010] [Revised: 10/18/2010] [Accepted: 10/18/2010] [Indexed: 11/29/2022]
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