کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1470396 | 990324 | 2009 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Field sludge characterization obtained from inner of pipelines Field sludge characterization obtained from inner of pipelines](/preview/png/1470396.png)
Physicochemical characterization of sludge obtained from refined hydrocarbons transmission pipeline was carried out through Mössbauer spectroscopy and X-ray diffraction. The Mössbauer and X-ray patterns indicate the presence of corrosion products composed of different iron oxide and sulfide phases. Hematite (α-Fe2O3), magnetite (Fe3O4), maghemite (γ-Fe2O3), magnetic and superparamagnetic goethite (α-FeOOH), pyrrhotite (Fe1−xS), akaganeite (β-FeOOH), and lepidocrocite (γ-FeOOH) were identified as corrosion products in samples obtained from pipeline transporting Magna and Premium gasoline. For diesel transmission pipeline, hematite, magnetite, and magnetic goethite were identified. Corrosion products follow a simple reaction mechanism of steel dissolution in aerated aqueous media at a near-neutral pH. Chemical composition of the corrosion products depends on H2O and sulfur inherent in fluids (traces). These results can be useful for decision-making with regard to pipeline corrosion control.
Journal: Corrosion Science - Volume 51, Issue 11, November 2009, Pages 2652–2656