Land Treatment Alternatives for Bioremediating Wood Preserving Wastes

Haught, Roy C.; Neogy, Ruma; Vonderhaar, Susan; Krishnan, E. Radha; Safferman, Steven I.; Ryan, John R.

doi:10.1089/hwm.1995.12.329

Cited by 9 publications

(10 citation statements)

References 4 publications

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“…Pilot Scale Land Treatment Reactors. The soil pan reactors are described in detail elsewhere ( , ). In brief, four 30 cm × 30 cm × 45 cm (w × l × d) stainless steel pan reactors were suspended in a water bath and housed in a custom-built plexiglass and steel glovebox.…”

Section: Methodsmentioning

confidence: 99%

“…Treatment of soils contaminated with polycyclic or polynuclear aromatic hydrocarbons (PAHs) by land treatment has been studied at bench scale () and pilot scale ( − ) and applied at full scale ( − ). Typically, land treatment of PAH-contaminated soil produces a relatively rapid drop in two-, three-, and four-ring PAH concentrations in the first 1−3 months of operation followed by a relatively slow rate of removal for the remainder of the operation.…”

Section: Introductionmentioning

confidence: 99%

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Land Treatment of PAH-Contaminated Soil: Performance Measured by Chemical and Toxicity Assays

Sayles

Acheson

Kupferle

et al. 1999

Environ. Sci. Technol.

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The performance of a soil remediation process can be determined by measuring the reduction in target soil contaminant concentrations and by assessing the treatment's ability to lower soil toxicity. Land treatment of polycyclic aromatic hydrocarbon (PAH)-contaminated soil from a former wood-treating site was simulated at pilot scale in temperature-controlled soil pans. Nineteen two- through six-ring PAHs were monitored with time (initial total PAHs = 2800 mg/kg). Twenty-five weeks of treatment yielded a final total PAH level of 1160 mg/kg. Statistically significant decreases in concentrations were seen in total, two-, three-, and four-ring PAHs. Carcinogenic and five- and six-ring PAHs showed no significant change in concentration. Land treatment resulted in significant toxicity reduction based on root elongation, Allium chromosomal aberration, and solid-phase Microtox bioassays. Acute toxicity, as measured by the earthworm survival assay, was significantly reduced and completely removed. The Ames spiral plate mutagenicity assay revealed that the untreated soil was slightly mutagenic and that treatment may have reduced mutagenicity. The variety of results generated from the chemical and toxicity assays emphasize the need for conducting a battery of such tests to fully understand soil remediation processes.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Land Treatment of PAH-Contaminated Soil: Performance Measured by Chemical and Toxicity Assays

Sayles

Acheson

Kupferle

et al. 1999

Environ. Sci. Technol.

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“…The LT process used UTS screened to less than 1/2-inch particle size. The LT reactors are described in detail elsewhere (47,48). In brief, an LT reactor consisted of a stainless steel pan containing about 30 kg of dry soil (1.5 cubic feet of soil).…”

Section: Chemicalsmentioning

confidence: 99%

“…In brief, an LT reactor consisted of a stainless steel pan containing about 30 kg of dry soil (1.5 cubic feet of soil). Soil was placed in the pan to a depth of 8 inches, which was characteristic of field-scale LT. Four of these pans were suspended in a water bath and housed in a custom-built Plexiglas and steel glove box (47). Air Testing.…”

Section: Chemicalsmentioning

confidence: 99%

Genotoxicity of bioremediated soils from the Reilly Tar site, St. Louis Park, Minnesota.

Hughes

Claxton

Brooks

et al. 1998

Environ Health Perspect

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An in vitro approach was used to measure the genotoxicity of creosote-contaminated soil before and after four bioremediation processes. water-soluble mutagens accounted for 40% of the total mutagenic activity and they were stable at room temperature. The mutagenic activity in the bioslurry and biopile samples was due to either the processes themselves or to the added sludge/manure amendments. The in vitro approach was effective in monitoring bioremediated soils for genotoxicity and will be useful in future laboratory and in situ studies.

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“…In practice, surface inoculation of a fungal culture on a layer of wood chips spread over the contaminated soils is considered an effective and inexpensive technique for treatment of soils contaminated with PAHs. Unfortunately, a big drawback associated with the use of a lignin degrading fungus in soil systems is that after the initial fungal degradative response, a plateau may be reached rapidly with very little degradation thereafter, even with application of additional amendments (Haught et al, 1995).…”

Section: Soilsmentioning

confidence: 99%

Use of lignin degrading fungi in bioremediation

Azadpour¹,

Powell²,

Matthews³

1997

Remediation Journal

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The use of lignin degrading fungi for decomposition of a wide variety of xenobiotics has become an area of intensive research. One distinct advantage of lignin degrading fungi over bacteria is that they do not require preconditioning to a particular pollutant prior to transformation. This degradative ability has been attributed to a nonspecific and nonstereoselective extracellular lignin‐degrading enzymatic system (ligninase) which is induced by the fungi under nitrogen or carbon‐limiting conditions (Reid, 1979). Ligninases (lignin‐peroxidases) are responsible for the initial oxidative attack on lignin and other complex molecules via formation of a free radical thereby leading to depolymerization of complex molecular structures. Potential degradative ability of peroxidases may extend to include (1) sorbed contaminants, (2) high molecular‐weight, hydrophobic contaminants, and (3) complex mixtures of chemicals typical of a contaminated site.

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Land Treatment Alternatives for Bioremediating Wood Preserving Wastes

Cited by 9 publications

References 4 publications

Land Treatment of PAH-Contaminated Soil: Performance Measured by Chemical and Toxicity Assays

Land Treatment of PAH-Contaminated Soil: Performance Measured by Chemical and Toxicity Assays

Genotoxicity of bioremediated soils from the Reilly Tar site, St. Louis Park, Minnesota.

Use of lignin degrading fungi in bioremediation

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