Selection of organic substrates as potential reactive materials for use in a denitrification permeable reactive barrier (PRB)

Gibert, Oriol; Pomierny, Sylwia; Rowe, Ivan; Kalin, Robert M.

doi:10.1016/j.biortech.2008.02.012

Cited by 194 publications

(128 citation statements)

References 23 publications

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“…Field manipulations of mineral and organic inputs were also shown to impact on these denitrifiers community traits, as exemplified with sewage sludge (Enwall et al, 2005) and composted pig manure (Dambreville et al, 2006) on narG and nosZ genes diversity. In other ecosystem types or in soil microcosms, denitrifiers were also susceptible to the variation in organic substrates availability and diversity (Hallin et al, 2006;Dodla et al, 2008;Gibert et al, 2008;Henderson et al, 2010). Here, the compositional shifts that affected the nitrite and the nitrous oxide reductase communities in amended soils were community specific in so far as the different clusters and sub-clusters of both dendrograms (see Figs.…”

Section: Mulch Effects On the Denitrifiers Communitymentioning

confidence: 85%

Soil Organic Matter Quality, Structure and Activity of the Denitrifiers Community as Influenced by Decaying Mulched Crop Residues

Dieng¹,

Baudoin²,

Thioulouse³

et al. 2015

AEER

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Dieng et al.: Soil organic matter quality, structure and activity of the denitrifiers community as influenced by decaying mulched crop residues -655 - Abstract. Our experiment evaluated the effect of maize and peanut mulched residues upon soil organic matter and denitrifying community over a five-week incubation in soil microcosms. Soil organic matter under peanut and maize debris contrasted in biochemical quality throughout incubation, despite identical soil C contents that were significantly increased by both organic amendments. Moreover, only soluble extracts originating from the peanut treated soils could significantly fuel semi-potential denitrification. Accordingly, the composition of the nirK and nosZ communities was also specifically affected by mulch type, and the strongest impact was registered within the nosZ gene-bearing denitrifiers under peanut residues. Residue enriched soils displayed temporal patterns of potential denitrification activity that were also dependant on residue type. The highest overall emission rates were recorded with soils under maize mulch but they were not mirrored by direct N 2 O contents of the microcosm's headspace. Overall, both soil organic matter and denitrifiers community changes were conditioned throughout the decomposition kinetics by the original quality of mulched crop residues. However, the denitrification activity was decoupled both from the composition of the denitrifying community and from the soil organic matter quality.

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Section: Mulch Effects On the Denitrifiers Communitymentioning

confidence: 85%

Soil Organic Matter Quality, Structure and Activity of the Denitrifiers Community as Influenced by Decaying Mulched Crop Residues

Dieng¹,

Baudoin²,

Thioulouse³

et al. 2015

AEER

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“…In this case, nitrate is converted to ammonium rather than N 2 (Schipper and Vojvodić-Vuković 2000;Greenan et al 2006). Furthermore, previous studies have demonstrated that anaerobic environments with abundant organic C tend to favor DNRA over denitrification (Greenan et al 2006;Van Rijn et al 2006;Gibert et al 2008). In addition, mineralization of organic N under anaerobic conditions should have resulted in corresponding increases in NH 4 + -N (Greenan et al 2006).…”

Section: Evolution Of Nitrogen Compounds In Various Systemsmentioning

confidence: 89%

“…HD is promoted by organic substrates that serve as carbon (C) sources and electron donors for the denitrifying microbes. A variety of carbonaceous solid materials and immiscible liquids have been successfully tested in denitrifying bioreactors during laboratory and field trials (Volokita et al 1996;Gibert et al 2008;Greenan et al 2006;Cameron and Schipper 2010). To date, wood particle materials in particular have been the most widely used in the field trials due to the gradual soluble nature of its cellulose and hemicellulose compounds.…”

Section: Introductionmentioning

confidence: 99%

Nitrate-Contaminated Water Remediation Supported by Solid Organic Carbon and ZVI-Combined System

Wang

et al. 2015

Water Air Soil Pollut

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Solid organic carbon and zero-valent iron (ZVI) have been used separately as reactive media in permeable reactive barriers (PRBs) to degrade nitrate in groundwater, but few studies have examined the combination of the two materials in one system for nitrate remediation. In the present study, batch tests are conducted to evaluate three common solid organic carbons and their combination with ZVI for nitrate removal from water. The results show that the combined system achieves better denitrification efficiency than that measured with sawdust or cotton alone. However, no obvious difference is noted between the cornstalk alone and its mixture with ZVI treatment. When complete nitrate removal is achieved in the system that combined ZVI with sawdust or cotton, only 72 and 62.6 % of nitrate removal, respectively, are obtained in which the carbon (C) source is used alone. The results indicate that there are synergistic effects in the combined denitrification system, and the effects depend on the type of carbon material used. Sawdust is an alternative carbon source for nitrate removal in a C-ZVI-combined system. In a sawdust-ZVI system, the accumulation of nitrite and ammonium is affected greatly by nitrate concentration, C/N ratio, and Fe/N ratio.

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“…Reported nitrate reduction rates ranged from 0.004 to 26.5 mg nitrate·l -1 ·day -1 [15] and first order constants were in the range 3·10 -5 to 1.4 day -1 [16] for different types of vegetal-based materials and under different conditions. Due to high environment heterogeneity in riparian soils, past studies of spatial distribution of the denitrification potential in these systems showed high variations in width and depth, [17][18][19][20][21].…”

Section: Eqmentioning

confidence: 99%

Subsurface nitrate reduction under wetlands takes place in narrow superficial zones

Ribas

Calderer

Martí

et al. 2017

Environmental Technology

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Selection of organic substrates as potential reactive materials for use in a denitrification permeable reactive barrier (PRB)

Cited by 194 publications

References 23 publications

Soil Organic Matter Quality, Structure and Activity of the Denitrifiers Community as Influenced by Decaying Mulched Crop Residues

Soil Organic Matter Quality, Structure and Activity of the Denitrifiers Community as Influenced by Decaying Mulched Crop Residues

Nitrate-Contaminated Water Remediation Supported by Solid Organic Carbon and ZVI-Combined System

Subsurface nitrate reduction under wetlands takes place in narrow superficial zones

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