Redox zones, sequence

Figure 11.16 Schematic cross-sections of groundwater systems contaminated by organic-rich Wastes, (a) Development of redox zones down gradient from a landfill in the ground-water flow direction (Baedecker and Back 1979). (b) Possible sequence of redox zones encountered in the groundwater flow direction from a source of organic contamination. After D. R. Lovley, F. H. Chapelle, and J. C. Woodward, Use of dissolved H2 concentrations to determine distribution of microbially catalyzed redox reactions in anoxic groundwater.

Figure 14.3 Variation in concentrations of important dissolved redox species along the flowpath of a contaminant plume in ground-water. This sequence results in several zones of characteristic microbial metabolism and corresponding redox conditions (adapted from Bouwer et al., 1984).

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