Carbon limitation of denitrification rates in an anaerobic groundwater system

Bradley, Paul M.; Fernández, M. A.; Chapelle, Francis H.

doi:10.1021/es00036a007

Cited by 87 publications

(39 citation statements)

References 12 publications

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“…Furthermore, the COD to NO 3 ratio in this pharmaceutical wastewater was optimum at approximately 73:1. Several investigators agree that the increase in nitrate consumption is linear, while some authors propose ratios between 3 and 7, which depends on the type of carbon source [3,[8][9][10]. Nitrate-reducing activity was superior with adapted sludge for pharmaceutical wastewater (Fig.…”

Section: Resultsmentioning

confidence: 99%

Comparative anaerobic treatment of wastewater from pharmaceutical, brewery, paper and amino acid producing industries

Rodrı́guez-Martı́nez

Martínez-Amador

Garza-Garcı́a

2005

J IND MICROBIOL BIOTECHNOL

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This study concerned the anaerobic treatment of five different industrial wastewaters with a diverse and complex chemical composition. The kinetics of biotransformation of this wastewater at different chemical oxygen demand (COD) were studied in a batch reactor. Wastewater from an amino acid producing industry (Fermex) and from a tank that received several types of wastewaters (collector) contained 0.83 g l(-1) and 0.085 g l(-1) sulfate, respectively. During the study period of 20 days, methane formation was observed in all types of wastewaters. Studies on COD biodegradation showed the reaction velocity was higher for Fermex wastewater and lower for collector wastewater, with values of 0.0022 h(-1) and 0.0011 h(-1), respectively. A lower methanogenic activity of 0.163 g CH4 day(-1) g(-1) volatile suspended solids (VSS) and 0.20 g CH4 day(-1) g(-1) VSS, respectively, was observed for paper producing and brewery wastewater. Adapted granular sludge showed the best biodegradation of COD during the 20-day period. The sulfate-reducing activity in pharmaceutical and collector wastewater was studied. A positive effect of sulfate-reducing activity on methanogenic activity was noted for both types of wastewaters, both of which contained sulfate ions. All reactions of methane generation for the tested industrial wastewaters were first-order. The results of this study suggest that the tested wastewaters are amenable to anaerobic treatment.

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Section: Resultsmentioning

confidence: 99%

Comparative anaerobic treatment of wastewater from pharmaceutical, brewery, paper and amino acid producing industries

Rodrı́guez-Martı́nez

Martínez-Amador

Garza-Garcı́a

2005

J IND MICROBIOL BIOTECHNOL

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“…Bradley (Bradley et al 1992) found that NO 3 -N concentration only accounted for 34 % of the variation in denitrification with organic carbon content being the more important factor. Similarly, Desimone (Desimone and Howes 1996) demonstrated that organic carbon was the major limitation in regulating denitrification versus NO 3 − transport processes in a coastal aquifer.…”

Section: Discussionmentioning

confidence: 99%

Spatial and temporal variability in nitrous oxide and methane emissions in urban riparian zones of the Pearl River Delta

Zhang

Huang

Yang

et al. 2015

Environ Sci Pollut Res

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Spatial and temporal variability in nitrous oxide and methane emissions were quantified in three seasons using closed chambers in three riparian zone locations of three branches of the Pearl River, Guangzhou, China. The sampling sites were selected in a rapidly developing urban area of Guangzhou and represented a pollution gradient. The results show that urban riparian landscapes can be large source areas for CH 4 and N 2 O, with fluxes of −0.035 ∼ 32.30 mg m −2 h −1 and −5.49 ∼ 37.31 μg m −2 h −1 , respectively. River water quality, sediment texture, and NH 4 -N and NO 3 -N concentrations correlated with N 2 O and CH 4 emission rates. The riparian zones of the more seriously polluted tributaries showed higher greenhouse gas fluxes than that of the less polluted main stem of the Pearl River. Rain events increased emissions of CH 4 by 6.5∼21.3 times and N 2 O by 2.2∼5.7 times. The lower concentrations of heavy metals increased the activity of denitrifying enzymes while inhibited the methane producing pathways. This work demonstrates that rapidly developing urban areas are an important source of greenhouse gas emissions, which is conditioned by various environmental factors.

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“…The rapid increase of DOC concentration observed from May to June at certain sites (P5-P9) may derive from greater organic matter inputs from plants to the soil, therefore providing better conditions for nutrient sequestration within the riparian area. Some studies suggest that denitrification can be limited by a supply of organic carbon (Hedin et al, 1998;Starr and Gillham, 1993;Bradley et al, 1992;Hill et al, 2000) as it provides energy to the bacterial community and, indirectly, promotes the occurrence of anoxic conditions through O 2 consumption by heterotrophic bacteria. Hedin et al (1998) reported that NO 3 only accumulated in subsurface waters with DOC concentrations of less than 2 mg l −1 in Smith Creeck nearstream environments; while other Authors (Starr and Gillham, 1993) suggest that concentrations of 4-5 mg l −1 are not enough to sustain denitrification.…”

Section: Environmental Factors Affecting Nitrogen Dynamicsmentioning

confidence: 99%

Lacustrine wetland in an agricultural catchment: nitrogen removal and related biogeochemical processes

Balestrini

Arese

Delconte

2008

Hydrol. Earth Syst. Sci.

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Abstract. The role of specific catchment areas, such as the soil-river or lake interfaces, in removing or buffering the flux of N from terrestrial to aquatic ecosystems is globally recognized but the extreme variability of microbiological and hydrological processes make it difficult to predict the extent to which different wetlands function as buffer systems. In this paper we evaluate the degree to which biogeochemical processes in a lacustrine wetland are responsible for the nitrate removal from ground waters feeding Candia Lake (Northern Italy). A transect of 18 piezometers was installed perpendicular to the shoreline, in a sub-unit formed by 80 m of poplar plantation, close to a crop field and 30 m of reed swamp. The chemical analysis revealed a drastic NO is a valuable indicator of the denitrification activity. The pluviometric regime, the temperature, the organic carbon availability and the hydrogeomorphic properties are the main environmental factors affecting the N transformations in the studied lacustrine ecosystem.

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Carbon limitation of denitrification rates in an anaerobic groundwater system

Cited by 87 publications

References 12 publications

Comparative anaerobic treatment of wastewater from pharmaceutical, brewery, paper and amino acid producing industries

Comparative anaerobic treatment of wastewater from pharmaceutical, brewery, paper and amino acid producing industries

Spatial and temporal variability in nitrous oxide and methane emissions in urban riparian zones of the Pearl River Delta

Lacustrine wetland in an agricultural catchment: nitrogen removal and related biogeochemical processes

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