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REMOVAL OF CREOSOTE FROM SOIL BY BIOSLURRY REACTORS
Citation:
Lauch, R., J. Herrmann, W. Mahaffey, A. Jones, M. Dossani, AND J. Hessling. REMOVAL OF CREOSOTE FROM SOIL BY BIOSLURRY REACTORS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/A-92/188.
Description:
Biological slurry reactors were tested for removal of polynuclear aromatic hydrocarbons (PAHs) from creosote contaminated soil. ive bioslurry reactors, operated in parallel, kept the soil aerated, partially suspended and well mixed. he reactors were inoculated with indigenous microbes of the Genus Pseudomonas. utrients were added to maintain the optimum ratio of carbon, nitrogen, and phosphorus. emperature within the reactors was approximately 25 degrees C. he slurry consisted of approximately 30% contaminated soil. esults of pilot studies showed that approximately 90% of the total PAHs were removed in the first two weeks. otal PAH concentration in the soil was reduced from approximately 10973 mg/kg to 1097 mg/kg. wo and three ring PAHs, such as naphthalene, fluorene, and phenanthrene were approximately 96% removed in the first two weeks and higher ring compounds such as chrysene, benzo-a-pyrene, and benzo(b) fluoranthene were approximately 83% removed in the first two weeks.