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Physiochemical Characterization of Five Iron Tubercles from a Single Drinking Water Distribution System: Possible New Insights on Their Formation and Growth
Citation:
GERKE, T. L., J. B. MAYNARD, M. R. SCHOCK, AND D. A. LYTLE. Physiochemical Characterization of Five Iron Tubercles from a Single Drinking Water Distribution System: Possible New Insights on Their Formation and Growth. Corrosion Science. Elsevier BV, AMSTERDAM, Netherlands, 50(7):2030-2039, (2008).
Impact/Purpose:
SDWA
Description:
Physiochemical data on five iron tubercles from a single Distribution System (DS) are divided into two groups based on internal morphology and the predominate core iron mineral phases, α-FeOOH, γ-FeOOH, or Fe3O4, yet all three coexist in each tubercle. Conditions of formation of these phases indicate highly complex internal pH and Eh conditions, rates of oxidation, and differing ratios of Fe(II) and Fe(III). It has been concluded from this study that iron pipe tubercles exhibit a greater diversity within a single DS than previously thought and water quality parameters may not be the main controls of tubercle formation and growth.
