TY - JOUR
T1 - Continuous vapor-phase trichloroethylene biofiltration using hydrocarbon-enriched compost as filtration matrix
AU - Sukesan, S.
AU - Watwood, M. E.
N1 - Funding Information:
Acknowledgements The work described was supported by the NSF-Idaho EPSCoR program and by National Science Foundation Cooperative Agreement OSR-9350539. Salary for S.S. was provided by a DOE traineeship. The authors wish to thank Dr. Bill Apel, Mr. Brady Lee, and Mr. Mike Lehman of the INEEL Research Center for access to equipment and facilities and invaluable advice during the experimental phase of the project.
PY - 1997
Y1 - 1997
N2 - Two sources of finished compost material were examined for the capacity to support trichloroethylene(TCE)-degrading microbial populations in a gas-phase bioreactor. Gaseous hydrocarbon was passed through the bioreactor to stimulate cometabolic oxidation of TCE. Significant differences in TCE removal efficiencies were observed between the two compost types, and between hydrocarbon-stimulated and non-stimulated compost. At an average column retention time of 5.6 min, deciduous leaf debris compost removed more than 95% of a 5-50 ppm (by vol.) TCE gas stream, whereas less than 15% removal was observed under similar conditions with a woodchip and bark compost. Trichloroethylene removal efficiency varied with the hydrocarbon-stimulation regime employed, although propane and methane stimulated TCE degradation equally well. Amendment of compost with granular activated carbon substantially increased biological TCE removal, Differences in TCE removal efficiencies observed between the two compost types and between hydrocarbon-stimulated and non-stimulated composts were investigated in terms of changes in the overall heterotrophic microbial populations by using community-level physiological profile analysis.
AB - Two sources of finished compost material were examined for the capacity to support trichloroethylene(TCE)-degrading microbial populations in a gas-phase bioreactor. Gaseous hydrocarbon was passed through the bioreactor to stimulate cometabolic oxidation of TCE. Significant differences in TCE removal efficiencies were observed between the two compost types, and between hydrocarbon-stimulated and non-stimulated compost. At an average column retention time of 5.6 min, deciduous leaf debris compost removed more than 95% of a 5-50 ppm (by vol.) TCE gas stream, whereas less than 15% removal was observed under similar conditions with a woodchip and bark compost. Trichloroethylene removal efficiency varied with the hydrocarbon-stimulation regime employed, although propane and methane stimulated TCE degradation equally well. Amendment of compost with granular activated carbon substantially increased biological TCE removal, Differences in TCE removal efficiencies observed between the two compost types and between hydrocarbon-stimulated and non-stimulated composts were investigated in terms of changes in the overall heterotrophic microbial populations by using community-level physiological profile analysis.
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U2 - 10.1007/s002530051114
DO - 10.1007/s002530051114
M3 - Article
AN - SCOPUS:0030859679
SN - 0175-7598
VL - 48
SP - 671
EP - 676
JO - Applied Microbiology and Biotechnology
JF - Applied Microbiology and Biotechnology
IS - 5
ER -