Biofilm Dynamics and Kinetics during High-Rate Sulfate Reduction under Anaerobic Conditions

Nielsen, Per Halkjær

doi:10.1128/aem.53.1.27-32.1987

Cited by 98 publications

(40 citation statements)

References 30 publications

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“…This value is higher than would be expected if diffusion were the sole factor controlling observed rates but may underestimate the microbial response to temperature if diffusion limitation did affect the rates. Previous studies have indicated the temperature dependence of sulfate reduction is even more pronounced (Qlo 2.9-3.6; Nielsen 1987;Ingvorsen et al 198 1;Jorgensen 1977).…”

Section: Resultsmentioning

confidence: 94%

Sulfate reduction and diffusion in sediments of Little Rock Lake, Wisconsin

Urban

Brezonik

Baker

et al. 1994

Limnology & Oceanography

105

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Rates of sulfate diffusion and reduction were measured in sediments of Little Rock Lake, an oligotrophic, soft-water lake in northern Wisconsin. Laboratory measurements of kinetics of sulfate reduction found half-saturation constants (20-30 pmol liter-I) and Q10 values (2.6) similar to values reported in the literature. Sulfate reduction under in situ conditions in sediment cores was limited by sulfate and followed similar uptake kinetics as in laboratory experiments. Some variation in kinetic parameters was evident as a function of location in the lake. No seasonal variation was observed in sulfate reduction rates in the lake sediments, and littoral and pelagic sites exhibited similar rates. Rates of sulfate reduction were much higher than fluxes of sulfate calculated from pore-water profiles. Pore-water profiles also indicated little difference in diffusive fluxes among pelagic and littoral sites and among seasons. The discrepancy between diffusive fluxes and sulfate reduction rates is ascribed to high rates of oxidation of reduced sulfur. Nonlinear rates of sulfate reduction and calculated turnover times of sediment sulfide pools support the hypothesis that sulfide oxidation occurs nearly as rapidly as sulfate reduction.

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Section: Resultsmentioning

confidence: 94%

Sulfate reduction and diffusion in sediments of Little Rock Lake, Wisconsin

Urban

Brezonik

Baker

et al. 1994

Limnology & Oceanography

105

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“…The K m value for sulfate of D. desulfuricans attached to particles (8.4-9.0 /~M) was much lower than those of free-living ones. Nielsen [5] also reported a low K m value (1.4/zM) for SRB attached on a biofilm. These low K m values for attached cells may be due to the adsorption of sulfate to the solid surface.…”

Section: Discussionmentioning

confidence: 97%

“…Most sulfate-reducing bacteria (SRB) were shown to be attached to particles larger than 10 /zm in aquatic sediments [1]. Interaction between SRB and solid particles has been studied by several investigators [2][3][4][5][6][7][8]. Some attempts to examine effects on activity of SRB of solid particles such as silica gel, clay and sand under sufficient concentrations of electron donors and sulfate have produced conflicting results including stimulation [4,5] and inhibition [2,3].…”

Section: Introductionmentioning

confidence: 99%

“…Interaction between SRB and solid particles has been studied by several investigators [2][3][4][5][6][7][8]. Some attempts to examine effects on activity of SRB of solid particles such as silica gel, clay and sand under sufficient concentrations of electron donors and sulfate have produced conflicting results including stimulation [4,5] and inhibition [2,3]. The differences may KzHPO 4 (0.5), NH4CI (1), Na2SO 4 (1), CaC122H20 (0.1), MgSO47H20 (2), Na-lactate (3.5), FeSO47H20 (0.2), and yeast extract (Difco, USA) (1) at pH 7.2.…”

Section: Introductionmentioning

confidence: 99%

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Kinetics of sulfate respiration by free-living and particle-associated sulfate-reducing bacteria

Fukui

1994

FEMS Microbiology Ecology

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Effects on sulfate respiration of association of sulfate-reducing bacteria (SRB) with solid particles (anion exchange resin and FeS-precipitate) were examined using Desulfovibrio desulfuricans. The rates of sulfide production by resin-and FeS-associated cells were 2-3% and 19-56% of that by free-living ones, respectively, under sulfate-and lactate-rich conditions. On the other hand, under sulfate-poor (less than 50/~M) and lactate-rich conditions the rate by FeS-associated cells was higher than that by free-living ones. The values of K m (/zM), half saturation constant of the Michaelis-Menten model, for sulfate were 244 for free-living cells, 8.96 for resin-associated ones and 8.42 for FeS-associated ones. Under lactate-poor and sulfate-rich conditions the rate by FeS-associated cells was similar to that by free-living ones. These results suggest that FeS-associated SRB are more advantageous than free-living ones under sulfate-poor environments such as freshwater sediments.

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“…Assuming that the ground water in the vicinity of this well behaved according to closed system conditions during the monitoring period, which is considered to be a conservative assumption (i.e., there was no additional input of sulfate), the well 2 data indicate an overall bacterial sulfate reduction rate of approximately 1540 mg/L over 21 months (1999 to 2001), equivalent to 2.4 mg/L/d. It is likely that the rate of sulfate reduction at well 2 became diffusion limited once the sulfate was depleted to low levels ( Figure 3) (Nielsen 1987).…”

Section: Evidence For Bacterial Sulfate Reduction As a Key Teap In Thmentioning

confidence: 99%

Seasonal Recharge and Replenishment of Sulfate Associated with Biodegradation of a Hydrocarbon Plume

Stempvoort¹,

Armstrong²,

Mayer³

2007

Groundwater Monitoring Rem

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The downward flux of sulfate in a weathered clayey aquitard to a hydrocarbon plume in ground water was investigated at a gas well site in Alberta, Canada. The dissolved hydrocarbon plume includes monoaromatic BTEX compounds and extends less than 20 m downgradient from a natural gas condensate source in silt‐ and clay‐rich deposits. The vadose zone at the site has high concentrations of water soluble sulfate, which is apparently derived from pyrite oxidation. Seasonal infiltration of snowmelt water, most notably during the “wet” spring of 2003 and also in 2004, was focused in an excavation and recharged the water table. This recharge replenished the contaminated zone with sulfate that was flushed downward from the vadose zone. Recharge in 2003 resulted in episodic increases in sulfate concentrations in the ground water condensate plume of up to 1000 mg/L. After episodic increases in sulfate concentrations within the core of the contaminant plume associated with recharge, concentrations then decreased to less than 1 mg/L, accompanied by isotopic enrichment of the residual sulfate in 34S. The monitoring data provide strong field evidence that bacterial sulfate reduction is a dominant terminal electron‐accepting process in the natural attenuation of the hydrocarbon plume in the ground water. This result suggests that engineered infiltration and replenishment of sulfate to petroleum hydrocarbon plumes in ground water might enhance biodegradation of these plumes.

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Biofilm Dynamics and Kinetics during High-Rate Sulfate Reduction under Anaerobic Conditions

Cited by 98 publications

References 30 publications

Sulfate reduction and diffusion in sediments of Little Rock Lake, Wisconsin

Sulfate reduction and diffusion in sediments of Little Rock Lake, Wisconsin

Kinetics of sulfate respiration by free-living and particle-associated sulfate-reducing bacteria

Seasonal Recharge and Replenishment of Sulfate Associated with Biodegradation of a Hydrocarbon Plume

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