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SITE EMERGING TECHNOLOGY REPORT: INNOVATIVE METHODS FOR BIOSLURRY TREATMENT
Citation:
Brown, K. SITE EMERGING TECHNOLOGY REPORT: INNOVATIVE METHODS FOR BIOSLURRY TREATMENT. EPA/540/R-96/505 (NTIS 97-176820), 1997.
Impact/Purpose:
information
Description:
IT Corporation (IT), Knoxville, Tennessee, in collaboration with U.S. Environmental protection Agency (EPA), investigated the feasibility of combined biological and chemical oxidation of polycyclic aromatic hydrocarbons (PAH). Bioslurry treatment of PAH-contaminated soils was demonstrated under the Superfund Innovative Technology Evaluation - Emerging Technology Program (SITE ETP) as an extension of research previously funded by IT Corporation (IT) (Brown and Sanseverino 1993) and additional investigations supported by the U.S. EPA (Davila et al. 1994). All testing was initiated in September, 1994. During the demonstration, IT operated two 60-liter (L) TEKNO Associates bioslurry reactors (Salt Lake City, Utah) and a 10-L reactor in series under semicontinuous, plug-flow mode for a 7-month period. The first 60-L reactor received fresh feed daily and supplements of salicylate and succinate to enhance PAH biodegradation. Slurry from the first reactor was fed to the second 10-L reactor, where Fenton’s reagent (Fe+++H2O2)was added to accelerate chemical oxidation of 4 to 6-ring PAHs. The third reactor in series was used to biologically oxidize contaminants remaining following addition of Fenton’s reagent. This reactor received no additions of salicylate and succinate and was aerated, nutrient amended, and pH adjusted only. During operation, the reactor system demonstrated total PAH and carcinogenic PAH (CPAH) transformation up to 95 and 84 percent, respectively. This report was submitted in fulfillment of assistance agreement CR821186-01-0 by IT Corporation under the partial sponsorship of the United States Environmental Protection Agency. This report covers a period from September 1994 to April 1995, and work was completed as of December 1995.
URLs/Downloads:
SITE EMERGING TECHNOLOGY REPORT: INNOVATIVE METHODS FOR BIOSLURRY TREATMENT540_R-96_505.PDF (PDF, NA pp, 1 KB, about PDF)