Resilience of microbial respiration, respiratory quotient and stable isotope characteristics to soil hydrocarbon addition

Dilly, Oliver; Nii-Annang, Seth; Franke, Gabriele; Fischer, Thomas; Buegger, Franz; Zyakun, A. M.

doi:10.1016/j.soilbio.2010.09.026

Cited by 21 publications

(9 citation statements)

References 18 publications

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“…These values are in the range reported by various studies [2,3]. They suggested that environmental conditions may control the ratio of mole CO 2 evolution per mole O 2 depletion.…”

Section: Respiratory Quotient (Rq) Evolution In Soil Microcosm Experisupporting

confidence: 74%

“…However, bioprocesses are often operated under sub-optimal conditions due to the difficulty of identifying on-line the limiting parameters to biodegradation. Respiratory quotient, which is the molar ratio of carbon dioxide production to oxygen consumption, can display variations depending on composition of the examined microbial community as well as their available growth substrates [2]. Therefore, respiratory quotient could provide a valuable tool for a qualitative evaluation of microbial activity during bioremediation processes.…”

Section: Introductionmentioning

confidence: 99%

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Using the Respiratory Quotient as a Microbial Indicator to Monitor Soil Biodegradation

Thanh¹

2018

JST

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The effects of nutrient amendments on the variation in time of the respiratory quotient (RQ) were investigated in soil. Microbial activity measured by CO 2 production, biomass growth determined by plate counts technique and residual contaminants quantified by gas chromatography analysis were monitored in order to check their relation to RQ fluctuations. RQ values in all treatments displayed significant fluctuations over time which were closely related to the phases of the respiratory response as well as to microbial growth. After pollutant addition, an increase of RQ occurred in all microcosms. RQ values decreased when high degradation activity and microbial growth took place. RQ values slightly increased in all microcosms at the end of the incubation. These results show that the respiratory quotient is closely related to the physiological state of microorganisms and may be a determinable indicator for the efficiency of bioremediation.

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“…These values are in the range reported by various studies [2,3]. They suggested that environmental conditions may control the ratio of mole CO 2 evolution per mole O 2 depletion.…”

Section: Respiratory Quotient (Rq) Evolution In Soil Microcosm Experisupporting

confidence: 74%

Section: Introductionmentioning

confidence: 99%

Using the Respiratory Quotient as a Microbial Indicator to Monitor Soil Biodegradation

Thanh¹

2018

JST

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“…The widespread use of hydrocarbons in fuels causes their predominance among organic atmospheric pollutants, and petroleum products are the major source of anthropogenic hydrocarbon pollutants found in the atmosphere Adeniyi, Owoade 2010;Okonkwo et al 2006;Manahan 1993). Total petroleum hydrocarbons (TPH) from fossil sources are not readily biodegradable as compared to biomass or soil organic matter, which have been demonstrated to be consumed during hydrocarbon degradation Zyakun et al 2011;Dilly et al 2011). However, n-alkanes have been reported to degrade more rapidly in soil and water than components of the unresolved complex mixture (UCM) contained in mineral oils (Reddy et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Deposition of Petroleum Hydrocarbons With Sediment Trapped in Snow in Roadside Areas

Mykhailova

Fischer

Iurchenko

2014

Journal of Environmental Engineering and Landscape Management

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Total petroleum hydrocarbon (TPH) deposition rates were determined along various roads using the natural snow cover as deposition trap. Daily deposition rates decreased with distance from the roads, which coincided with long-term TPH accumulation in roadside soils. Scanning electron microscopy (SEM-EDX) of the snow meltwater sediment revealed occurrence of carbon-rich plaques, which were identified as hydrocarbons using FTIR-microscopy. GC-MS revealed that the compounds extracted from the sediment consisted of an unresolved complex hydrocarbon mixture (UCM). Individual n-alkanes could not be resolved in the sediment extract, whereas TPHs extracted from soils contained a series of n-alkanes peaking at C25-C27. The proportion of UCM compounds from TPHs decreased with distance from road. We conclude that high-boiling hydrocarbons bind to coarse mineral dust and/or to splash water and vehicle spray, which preferentially deposit within a 10 m roadside strip.

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“…The widespread use of hydrocarbons in fuels causes their predominance among organic atmospheric pollutants, and petroleum products are the major source of anthropogenic hydrocarbon pollutants found in the atmosphere [1][2][3]. Total petroleum hydrocarbons (TPH) from fossil sources are not readily biodegradable as compared to biomass or soil organic matter, which have been demonstrated to be consumed during hydrocarbon degradation [4,5]. Once deposited to the surface, hydrocarbons may persist and bioaccumulate in environmental media [6] and infiltrate into groundwater aquifers via leaching or into surface aquifers by runoff with severe effects on plants [7,8], humans, and animals [9,10].…”

Section: Introductionmentioning

confidence: 99%

Distribution and Fractional Composition of Petroleum Hydrocarbons in Roadside Soils

Mykhailova

Fischer

Iurchenko

2013

Applied and Environmental Soil Science

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Total petroleum hydrocarbon (TPH) concentrations and their fractional composition (medium fraction: n-alkane chain-length C15 to C27, heavy fraction: >C27) were determined at distances from 1 to 60 m from roads and at soil depths from 0.5 to 15 cm. The traffic intensities were up to 25000 vehicles per day. Soil TPH concentrations were highest within 15 m distance (665 and 3198 mg kg−1at the windward and leeward sides, resp.), followed by a rapid drop to background values beyond (196 and 115 mg kg−1in 60 m distance at the windward and leeward sides, resp.). The data variability was lowest at distances of 1 m and highest within tree plantations at distances of 15 m from the road. The TPH concentrations decreased with depth but were significantly higher than the background at all depths investigated. A principal component analysis revealed a positive relation between the medium-to-heavy fraction ratio and soil depth. A fractional differentiation of hydrocarbons with distance from road was not observed. It was concluded that the assessment of the potential of hydrocarbons to translocate, accumulate, or degrade in soil necessitates their subdivision into fractions based on their physicochemical and metabolic properties.

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Resilience of microbial respiration, respiratory quotient and stable isotope characteristics to soil hydrocarbon addition

Cited by 21 publications

References 18 publications

Using the Respiratory Quotient as a Microbial Indicator to Monitor Soil Biodegradation

Using the Respiratory Quotient as a Microbial Indicator to Monitor Soil Biodegradation

Deposition of Petroleum Hydrocarbons With Sediment Trapped in Snow in Roadside Areas

Distribution and Fractional Composition of Petroleum Hydrocarbons in Roadside Soils

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