Bound residue formation in PAH contaminated soil composting using Phanerochaete chrysosporium

Title: Bound residue formation in PAH contaminated soil composting using Phanerochaete chrysosporium

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Abstract

The degradation rate of benzo(a)pyrene (B(a)P), a 5-ring PAH compound, was significantly enhanced in fungal (Phanerochaete chrysosporium) enriched soil composting microcosm reactors over that observed in unamended soil systems. The maximum B(a)P removal rate was 1.1 {mu}g/g-soil-day with fungal inoculation compared to 0.24 {mu}g/g-soil-day without fungal inoculation for a silt loam Kidman soil. Mass balance considerations suggested that the enhanced removal of B(a)P resulted in the formation of bound contaminant carbon residues in soil. A maximum bound residue formation rate of 0.37 {mu}g/g-soil-day was estimated in fungal inoculated microcosms. This was significantly different from the zero rate under natural soil conditions. The observed B(a) mineralization rates were less affected by fungal activity than was B(a)P removal. Degradation of B(a)P resulted in humification (i.e. polymerization) of most of contaminant carbon rather than conversion to CO{sub 2}. The fraction of contaminant carbon that was humified compared to that which was mineralized was dependent on soil type. A multi-compartment structural activity model has been developed to illustrate the overall degradation of B(a)P during soil composting.

Authors:

Qiu, Xiujin; McFarland, M J ^[1]

Utah State Univ., Logan (United States)

OSTI Identifier:: 5598541

Resource Type:: Journal Article

Journal Name:: Hazardous Waste and Hazardous Materials; (United States)

Additional Journal Information:: Journal Volume: 8:2; Journal ID: ISSN 0882-5696

Country of Publication:: United States

Language:: English

Subject:: 63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; 54 ENVIRONMENTAL SCIENCES; BENZOPYRENE; BIODEGRADATION; BIOLOGICAL MODELS; COMPOSTING; HUMUS; LAND POLLUTION CONTROL; LAND RECLAMATION; LOAM; MICROCOSMS; MINERALIZATION; PHANEROCHAETE; AROMATICS; CHEMICAL REACTIONS; CONDENSED AROMATICS; CONTROL; DECOMPOSITION; EUMYCOTA; FUNGI; HYDROCARBONS; MANAGEMENT; ORGANIC COMPOUNDS; PLANTS; POLLUTION CONTROL; PROCESSING; SOILS; WASTE MANAGEMENT; WASTE PROCESSING; 560300* - Chemicals Metabolism & Toxicology; 540250 - Environment, Terrestrial- Site Resource & Use Studies- (1990-)

Citation Formats


                    Qiu, Xiujin, and McFarland, M J. Bound residue formation in PAH contaminated soil composting using Phanerochaete chrysosporium.  United States: N. p.,  
        Web.

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                    Qiu, Xiujin, & McFarland, M J. Bound residue formation in PAH contaminated soil composting using Phanerochaete chrysosporium.  United States.

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                    Qiu, Xiujin, and McFarland, M J. .  
        "Bound residue formation in PAH contaminated soil composting using Phanerochaete chrysosporium".  United States.

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@article{osti_5598541,

  title        = {Bound residue formation in PAH contaminated soil composting using Phanerochaete chrysosporium},

  author       = {Qiu, Xiujin and McFarland, M J},

  abstractNote = {The degradation rate of benzo(a)pyrene (B(a)P), a 5-ring PAH compound, was significantly enhanced in fungal (Phanerochaete chrysosporium) enriched soil composting microcosm reactors over that observed in unamended soil systems. The maximum B(a)P removal rate was 1.1 {mu}g/g-soil-day with fungal inoculation compared to 0.24 {mu}g/g-soil-day without fungal inoculation for a silt loam Kidman soil. Mass balance considerations suggested that the enhanced removal of B(a)P resulted in the formation of bound contaminant carbon residues in soil. A maximum bound residue formation rate of 0.37 {mu}g/g-soil-day was estimated in fungal inoculated microcosms. This was significantly different from the zero rate under natural soil conditions. The observed B(a) mineralization rates were less affected by fungal activity than was B(a)P removal. Degradation of B(a)P resulted in humification (i.e. polymerization) of most of contaminant carbon rather than conversion to CO{sub 2}. The fraction of contaminant carbon that was humified compared to that which was mineralized was dependent on soil type. A multi-compartment structural activity model has been developed to illustrate the overall degradation of B(a)P during soil composting.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/5598541},
  journal      = {Hazardous Waste and Hazardous Materials; (United States)},

  issn         = {0882-5696},

  number       = ,

  volume       = 8:2,

  place        = {United States},

  year         = {},

  month        = {}

}

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