淡江大學機構典藏:Item 987654321/103041
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    Title: Effects of blending of desalinated and conventionally treated surface water on iron corrosion and its release from corroding surfaces and pre-existing scales
    Authors: H. Z. Liu;K. D. Schonberger;Peng, C. Y.;J. F. Ferguson;E. Desormeaux;P. Meyerhofer;H. Luckenbach;G. V. Korshin
    Contributors: 淡江大學水資源及環境工程學系
    Keywords: esalinated water;Iron corrosion;Blending;Surface water;Corrosion scales;Natural organic matter
    Date: 2013-07-01
    Issue Date: 2015-05-15 00:28:34 (UTC+8)
    Publisher: London: I W A Publishing
    Abstract: This study examined effects of blending desalinated water with conventionally treated surface water on iron corrosion and release from corroding metal surfaces and pre-existing scales exposed to waters having varying fractions of desalinated water, alkalinities, pH values and orthophosphate levels. The presence of desalinated water resulted in markedly decreased 0.45 μm-filtered soluble iron concentrations. However, higher fractions of desalinated water in the blends were also associated with more fragile corroding surfaces, lower retention of iron oxidation products and release of larger iron particles in the bulk water. SEM, XRD and XANES data showed that in surface water, a dense layer of amorphous ferrihydrite phase predominated in the corrosion products. More crystalline surface phases developed in the presence of desalinated water. These solid phases transformed from goethite to lepidocrocite with increased fraction of desalinated water. These effects are likely to result from a combination of chemical parameters, notably variations of the concentrations of natural organic matter, calcium, chloride and sulfate when desalinated and conventionally treated waters are blended.
    Relation: Water Research 47(11), pp.3817-3826
    DOI: 10.1016/j.watres.2013.03.052
    Appears in Collections:[Graduate Institute & Department of Water Resources and Environmental Engineering] Journal Article

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