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首页> 外文期刊>Desalination: The International Journal on the Science and Technology of Desalting and Water Purification >Sulfate removal from aqueous solutions by hydrous iron oxide macroscopic,thermal and spectroscopic analyses
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Sulfate removal from aqueous solutions by hydrous iron oxide macroscopic,thermal and spectroscopic analyses

机译：含水氧化铁的宏观，热和光谱分析从水溶液中去除硫酸盐

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A series of hydrous iron oxide samples were prepared by homogeneous precipitation from FeCl3 solution in the presence of SO_4~2 ions.Experiments were conducted to study the removal of sulfate ions by varying pH,SO_4~2/Fe~(3+)molar ratio and the nature of the associated cation.Conventional methods including Infrared Spectroscopy,X-ray Diffraction and Thermal Analyses were used for the characterization of sulfate ions interactions with the hydrous iron surface.The results of macroscopic studies show that the removal of sulfate is highly pH dependent,it is greater at pH range[3-4]and it decreases as the molar ratio enhances.Thermal and IR analyses demonstrate strong interactions of sulfate ions with the hydrous iron oxide.In the pH range studied,the results are consistent with inner-sphere surface complexes.
机译：通过在SO_4〜2离子存在下从FeCl3溶液中进行均相沉淀制备了一系列含水氧化铁样品。通过实验研究了通过改变pH，SO_4〜2 / Fe〜（3+）摩尔比去除硫酸根离子的方法。常规方法包括红外光谱法，X射线衍射法和热分析法用于表征硫酸根离子与水铁表面的相互作用。宏观研究结果表明，去除硫酸根的pH很高。温度和红外分析表明硫酸根离子与水合氧化铁之间有很强的相互作用。在所研究的pH范围内，结果与内在相符。球表面配合物。

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