Behavior of nitrogen-substituted naphthalenes in flooded soil—Part II. Effect of bioavailability on biodegration kinetics

Al-Bashir, Bilal; Hawari, Jalal; Samson, Réjean; Leduc, Roland

doi:10.1016/0043-1354(94)90256-9

Cited by 15 publications

(5 citation statements)

References 10 publications

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“…growing on naphthalene was only 0.078 ~M. In contrast, higher Ks values were determined for mixed cultures growing on substituted naphthalenes [2]; the values were 28, 13, and 7 p~M for 1-aminonaph- thalene, 2-aminonaphthalene, and 1-amino-2-methylnaphthalene, respectively. Guerin and Boyd [10] reported somewhat lower K~ values, 1.65 tXM and 0.71 IXM, for naphthalene for two different bacterial strains.…”

Section: Discussionmentioning

confidence: 92%

Bacterial degradation of low concentrations of phenanthrene and inhibition by naphthalene

Shuttleworth

Cerniglia

1996

Microb Ecol

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Phenanthrene-degrading bacteria were isolated from enrichment cultures of soils contaminated with creosote and jet fuel. The isolates from the creosote enrichments were classified by fatty acid methyl ester profiles as Acidovorax delafieldii and Sphingomonas paucimobilis; the bacterium from the jet fuel-contaminated soil was not identified and was designated strain JFD 11. All three isolates used phenanthrene as a sole carbon and energy source, and two of the isolates used fluoranthene as a sole carbon and energy source. Anthracene and fluorene were cometabolized by all three strains, but pyrene was not transformed. Naphthalene inhibited all of the strains, and 28-h cultures ofA. delafieldii were inhibited by naphthalene concentrations as low as 5 ppm.Short-term degradation experiments were undertaken with center-well flasks and concentrations of phenanthrene ranging from 1.2 to 12.0 IxM. Since initial degradation rates were not a function of phenanthrene concentration, it was inferred that the half-saturation constants were less than the lowest phenanthrene concentration tested.

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Section: Discussionmentioning

confidence: 92%

Bacterial degradation of low concentrations of phenanthrene and inhibition by naphthalene

Shuttleworth

Cerniglia

1996

Microb Ecol

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“…Subba‐Rao and Alexander [19] reported a similar effect on the mineralization of benzylamine; increases in clay concentration generally decreased the rate of substrate mineralized. Several researchers also have shown that biodegradation can be limited by the strong adsorption or slow desorption of organic compounds [20,21].…”

Section: Resultsmentioning

confidence: 99%

Microbial transformation of pyrethroid insecticides in aqueous and sediment phases

Lee

Gan

Kim

et al. 2004

Enviro Toxic and Chemistry

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Recent studies showed that synthetic pyrethroids (SPs) can move via surface runoff into aquatic systems. Fifty-six of SP-degrading bacteria strains were isolated from contaminated sediments, of which six were evaluated for their ability to transform bifenthrin and permethrin in the aqueous phase and bifenthrin in the sediment phase. In the aqueous phase, bifenthrin was rapidly degraded by strains of Stenotrophomonas acidaminiphila, and the half-life (t1/2) was reduced from >700 h to 30 to 131 h. Permethrin isomers were degraded by Aeromonas sobria, Erwinia carotovora, and Yersinia frederiksenii. Similar to bifenthrin, the t1/2 of cis- and trans-permethrin was reduced by approximately 10-fold after bacteria inoculation. However, bifenthrin degradation by S. acidaminiphila was significantly inhibited in the presence of sediment, and the effect was likely caused by strong adsorption to the solid phase. Bifenthrin t1/2 was 343 to 466 h for a field sediment, and increased to 980 to 1200 h for a creek sediment. Bifenthrin degradation in the inoculated slurry treatments was not greatly enhanced when compared with the noninoculated system. Therefore, although SP-degrading bacteria may be widespread in aquatic systems, adsorption to sediment could render SPs unavailable to the degraders, thus prolonging their persistence.

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“…Increases in clay concentration have been reported to generally decrease the rate of pesticide mineralization (Weber and Coble, 1968;Subba-Rao and Alexander, 1982). Several researchers have shown that biodegradation of organic compounds in soil can be limited by strong adsorption to, or slow desorption from, the different soil components (Pignatello, 1989;Al-Bashir et al, 1994).…”

Section: Deltamethrin Degradationmentioning

confidence: 99%

Deltamethrin Degradation and Soil Microbial Activity in a Riparian Wetland Soil

Muñoz-Leoz¹,

Garbisu

Antigüedad

et al. 2009

Soil Science

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The effects of deltamethrin, in the presence and absence of nitrate, on soil microbial activity (as reflected by the rates of soil microbial basal respiration, denitrification, and methanogenesis) were studied in a riparian wetland soil under both aerobic and anaerobic conditions. A microcosm study was carried out with soil collected from the vicinity of a wetland. The soil was then amended with 50, 125, and 250 mg deltamethrin kg j1 dry weight soil, in the presence and absence of 20 mg N-NO 3 j kg j1 dry weight soil. Half-life values for deltamethrin degradation ranged from 27 to 291 days, depending on experimental conditions. Nitrates had an inhibitory effect on deltamethrin degradation. Deltamethrin, under anaerobiosis, had an inhibitory effect on soil respiration; this effect was reversed in the presence of nitrate. An antagonistic effect between deltamethrin degradation and denitrification activity was observed. In the presence of nitrate, the activation of denitrifying bacteria led to competitive inhibition of methanogens. It was concluded that deltamethrin, designed to affect specific functions of its target organisms, also has an effect on nontarget organisms, that is, the soil microbial community. To our knowledge, this is the first report on the degradation and environmental impact of deltamethrin in a riparian wetland soil.

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Behavior of nitrogen-substituted naphthalenes in flooded soil—Part II. Effect of bioavailability on biodegration kinetics

Cited by 15 publications

References 10 publications

Bacterial degradation of low concentrations of phenanthrene and inhibition by naphthalene

Bacterial degradation of low concentrations of phenanthrene and inhibition by naphthalene

Microbial transformation of pyrethroid insecticides in aqueous and sediment phases

Deltamethrin Degradation and Soil Microbial Activity in a Riparian Wetland Soil

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