Transport of dissolved hydrocarbons influenced by oxygen-limited biodegradation; 1, Theoretical development

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doi: 10.1029/WR022i013p01973
Authors:Borden, Robert C.; Bedient, Philip B.
Author Affiliations:Primary:
N.C. State Univ., Raleigh, NC, United States
Other:
Rice Univ., United States
Volume Title:Water Resources Research
Source:Water Resources Research, 22(13), p.1973-1982. Publisher: American Geophysical Union, Washington, DC, United States. ISSN: 0043-1397
Publication Date:1986
Note:In English. 47 refs.; illus. incl. 2 tables
Summary:Many hydrocarbons and related organic contaminants are rapidly degradable in the presence of oxygen. Unfortunately, exchange of oxygen with subsurface contaminant plumes is often slow. In this paper, equations are developed for simulating the simultaneous growth, decay, and transport of microorganisms, as well as the transport and removal of hydrocarbon and oxygen. These equations are solved by conventional numerical techniques to study the impact of microbial kinetics, horizontal mixing, adsorption, and vertical exchange with the unsaturated zone on biodegradation. In the region near the hydrocarbon source, any available oxygen will be rapidly consumed. In the body of the hydrocarbon plume, oxygen transport will be rate limiting and the consumption of oxygen and hydrocarbon can be approximated as an instantaneous reaction. The major sources of oxygen to the plume appear to be transverse mixing, advective fluxes and adsorption is significant and vertical exchange with the unstaturated zone.—Modified journal abstract.
Subjects:Alteration; Biodegradation; Controls; Creosote; Geochemistry; Ground water; Hydrocarbons; Hydrochemistry; Hydrogeology; Movement; Organic compounds; Oxygen; Pollutants; Pollution; Soils; Solutes; Theoretical studies; Transport; Waste disposal; Water regimes; Gulf Coastal Plain; Montgomery County Texas; Texas; United States; Conroe; Organic materials; Southeastern Texas
Record ID:1987025335
Copyright Information:GeoRef, Copyright 2018 American Geosciences Institute.
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