title: Feasibility of enhanced biodegradation of petroleum compounds in groundwater under denitrifying conditions.
abstract: Groundwater was collected from a petroleum hydrocarbon contaminated site and characterized for microbial and physiochemical properties to assess the feasibility of enhanced natural attenuation. Results demonstrate the depletion of nitrate and dominance of denitrifying bacteria in the groundwater. Microcosm studies of amending nitrate and nutrients were attempted to enhanced biodegradation of petroleum compounds under denitrifying condition. Results show that 75% of petroleum compounds was degraded within 152-day in microcosms amended with nitrate, compared to 25% removal in the non-amended controls. Data indicate that nitrate amendment to groundwater may offer a viable remedy for enhanced natural attenuation of petroleum compounds.
authors.affiliation: School of Resources and Environment, Hefei University of Technology, Hefei, People's Republic of China. sjin@uwyo.edu
authors.forename: Song
authors.initials: S
authors.lastname: Jin
authors.forename: Paul
authors.initials: P
authors.lastname: Fallgren
authors.forename: Haiping
authors.initials: H
authors.lastname: Luo
mesh_terms: D001483:Base Sequence; D017931:DNA Primers; D005240:Feasibility Studies; D009566:Nitrates / Q000378:metabolism*; D010578:Petroleum / Q000378:metabolism*
chemical_list: D017931:DNA Primers; D009566:Nitrates; D010578:Petroleum