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Modification of a montmorillonite-illite clay using alkaline hydrothermal treatment and its application for the removal of aqueous Cs+ ions

机译:碱性水热处理改性蒙脱石-伊利石黏土及其在去除Cs +离子中的应用

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摘要

A montmorillonite-illite clay was modified using alkaline hydrothermal treatment (reflux method) and applied to the removal of aqueous Cs+ ions. The alkaline solutions were prepared by dissolving NaOH in seawater and in distilled water, and the effect of the two alkaline media on the sorption capacities of the modified clay was discussed. The modified materials were characterized using XRD, SEM/EDS, and FTIR. As a result of the modification, the original mineral was partially transformed into a zeolitic material with spherical morphology. The results showed that the modification improved the Cs+ uptake capacity of the starting clay, with the clay modified in distilled water medium demonstrating higher sorption capacity. The sorption data were adequately described using the Freundlich and Dubinin-Radushkevich isotherm models.
机译:使用碱性水热处理(回流法)对蒙脱土-伊利石粘土进行改性,并用于去除Cs +离子水溶液。通过将NaOH溶解在海水和蒸馏水中制备碱性溶液,并讨论了两种碱性介质对改性粘土吸附能力的影响。使用XRD,SEM / EDS和FTIR对改性材料进行表征。改性的结果是,原始矿物被部分地转变成具有球形形态的沸石材料。结果表明,改性提高了起始粘土的Cs +吸收能力,在蒸馏水介质中改性的粘土表现出更高的吸附能力。吸附数据使用Freundlich和Dubinin-Radushkevich等温线模型进行了充分描述。

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  • 作者

    Öztop B.; Shahwan Talal;

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  • 年度 2006
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  • 原文格式 PDF
  • 正文语种 eng
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