New Bio-Indicators for Long Term Natural Attenuation of Monoaromatic Compounds in Deep Terrestrial Aquifers

Frontiers in Microbiology
Thomas AülloAnthony Ranchou-Peyruse

Abstract

Deep subsurface aquifers despite difficult access, represent important water resources and, at the same time, are key locations for subsurface engineering activities for the oil and gas industries, geothermal energy, and CO2 or energy storage. Formation water originating from a 760 m-deep geological gas storage aquifer was sampled and microcosms were set up to test the biodegradation potential of BTEX by indigenous microorganisms. The microbial community diversity was studied using molecular approaches based on 16S rRNA genes. After a long incubation period, with several subcultures, a sulfate-reducing consortium composed of only two Desulfotomaculum populations was observed able to degrade benzene, toluene, and ethylbenzene, extending the number of hydrocarbonoclastic-related species among the Desulfotomaculum genus. Furthermore, we were able to couple specific carbon and hydrogen isotopic fractionation during benzene removal and the results obtained by dual compound specific isotope analysis (

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Citations

Jul 31, 2016·International Journal of Systematic and Evolutionary Microbiology·Sabrina BerlendisAnthony Ranchou-Peyruse
Jul 18, 2019·Environmental Microbiology·Magali Ranchou-PeyruseAnthony Ranchou-Peyruse
Nov 2, 2021·Frontiers in Microbiology·Magali Ranchou-PeyruseAnthony Ranchou-Peyruse

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Datasets Mentioned

BETA
AY741686
AY604051
JN038217
AB910321

Methods Mentioned

BETA
PCR
phase

Software Mentioned

Muscle
Gblocks
phyML

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