Benzpyrene breakdown by the soil microflora

Khesina, A. Ya.; Shcherbak, N. P.; Shabad, L. M.; Vostrov, I. S.

doi:10.1007/bf00808985

Cited by 4 publications

(4 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Chemical analysis indicated that the concentration of chlorinated herbicides in the control soil was less than 20 Mg/g (9). Previous research has demonstrated that soils with a past history of exposure to oil (10,11) or polycyclic aromatic hydrocarbons (12,13) contained relatively high populations of organic degrading microbes. Chemical analysis of the control soils detected primarily short-chain alkanes (C12-C2o), and benzenedicarboxylic acid was additionally detected in the Norwood soil (9).…”

Section: Methodsmentioning

confidence: 95%

Mutagenic activity of two soils amended with a wood-preserving waste

Donnelly¹,

Davol²,

Brown³

et al. 1987

Environ. Sci. Technol.

View full text Add to dashboard Cite

Section: Methodsmentioning

confidence: 95%

Mutagenic activity of two soils amended with a wood-preserving waste

Donnelly¹,

Davol²,

Brown³

et al. 1987

Environ. Sci. Technol.

View full text Add to dashboard Cite

“…McKenna and Heath (13) have reported cometabolism of these compounds in the presence of naphthalene, which suggests that there are bacteria which can transform them. Khesina et al (11) found degradation of up to 50% of the BP in soils over a 3-month period, with the most extensive degradation in highly contaminated soil from a refinery. Because in the latter study the BP concentration of the refinery soil was about 10fold higher than the site 4 July 1978 sediment BP concentration in the present study, the possibility exists that higher concentrations are re-quired to induce degradation of BP.…”

Section: Downloaded Frommentioning

confidence: 99%

Rates of Microbial Transformation of Polycyclic Aromatic Hydrocarbons in Water and Sediments in the Vicinity of a Coal-Coking Wastewater Discharge

Herbes

1981

Appl Environ Microbiol

View full text Add to dashboard Cite

To facilitate predictions of the transport and fate of contaminants at future coal conversion facilities, rates of microbial transformation of polycyclic aromatic hydrocarbons were measured in stream water and sediment samples collected in the vicinity of a coal-coking treated wastewater discharge from November 1977 through August 1979. Six radiolabeled polycyclic aromatic hydrocarbons were incubated with sediment and water samples; 14 CO 2 , cell-bound 14 C, and polar transformation products were isolated and quantified. Whereas 14 CO 2 and bound 14 C were major transformation products in sediment assays, soluble polar 14 C dominated transformation in water samples. Mean rate constants (measured at 20°C) in sediments collected downstream from the effluent outfall were 7.8 × 10 −2 h −1 (naphthalene), 1.6 × 10 −2 h −1 (anthracene), and 3.3 × 10 −3 h −1 [benz(a)anthracene], which corresponded to turnover times of 13, 62, and 300 h, respectively. No unequivocal evidence for transformation of benzo(a)pyrene or dibenz(a,h)anthracene was obtained. Only naphthalene and anthracene transformations were observed in water samples; rate constants were consistently 5- and 20-fold lower, respectively, than in the corresponding sediment samples. The measured rate constants for anthracene transformation in July 1978 sediment samples were not related to total heterotroph numbers. In late July 1978, the effluent was diverted from the primary study area; however, no differences were observed either in transformation rate constants or in the downstream/upstream sediment rate constant ratio. These results are consistent with the hypothesis that continuous inputs of polycyclic aromatic hydrocarbons result in an increased ability within a microbial community to utilize certain polycyclic aromatic hydrocarbons. However, because transformation rates remained elevated for more than 1 year after removal of the polycyclic aromatic hydrocarbon source, microbial communities may shift only slowly in response to changes in polycyclic aromatic hydrocarbon concentrations.

show abstract

“…This information will not, however, indicate the effect of soil incorporation on the toxic or mutagenic potential of hazardous waste. Poglazova et al (1967), Shabad et al (1971) and Khesina et al (1969) observed that the degradation of PAH by soil micro-organisms was significantly increased in a soil previously exposed to these compounds. Biodegradation will influence the mutagenic potential as it reduces the concentration of certain compounds and alters the reactivity of others.…”

Section: Discussionmentioning

confidence: 98%

Degradation of Soil Applied Organic Compounds From Three Petroleum Wastes

Brown

Donnelly

Thomas³

et al. 1985

Waste Manag Res

View full text Add to dashboard Cite

The degradation rates of three industrial wastes were evaluated under simulated land treatment conditions. A wood-preserving bottom sediment, storm-water runoff impoundment sludge, and combined API-separator/slop-oil emulsion solid waste were applied to greenhouse boxes containing Norwood silt loam or Bastrop clay soils. Soil samples were collected before waste application and 0, 180, 360 and 540 days following application. Solvent extractable organic compounds were determined gravimetrically, and a GC/MS/DS system was used to identify major extractable organic constituents. The most rapid degradation rate over a 360 day period was observed in the Bastrop soil amended with the combined API separator/slop-oil emulsion solid waste. The half-lives of the total extractable hydrocarbons ranged from a low of 217 days for the combined API waste in the Bastrop soil to a high of 340 days for the storm-water runoff waste in the Norwood soil. Major residual organic constituents in the waste amended soil after 60 days incubation included pentachlorophenol, fluoranthene, pyrene, dihydro acenaphthylene, cyclopenta phenanthrene and trimethyl naphthalene. These results indicate that large quantities of oil hydrocarbons can be degraded by soil application, and significant differences in degradation rates will occur between different wastes and soils.

show abstract

Benzpyrene breakdown by the soil microflora

Cited by 4 publications

References 1 publication

Mutagenic activity of two soils amended with a wood-preserving waste

Mutagenic activity of two soils amended with a wood-preserving waste

Rates of Microbial Transformation of Polycyclic Aromatic Hydrocarbons in Water and Sediments in the Vicinity of a Coal-Coking Wastewater Discharge

Degradation of Soil Applied Organic Compounds From Three Petroleum Wastes

Contact Info

Product

Resources

About