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Adsorption of Methylene Blue from Aqueous Solution by Anionic Surfactant Modified Montmorillonite

机译:通过阴离子表面活性剂改性蒙脱土从水溶液中吸附亚甲基蓝

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Sodium stearate modified montmorillonite (SSTA-MMT) is prepared by using the anion surfactant sodium stearate, and its structure is characterized by X-ray and FI-IR diffraction. The results show that sodium stearate can be intercalated into the interlayers of montmorillonite and the layer spacing is expanded from 12.74 to 48.05 A with the loading concentration of sodium stearate increasing from 5% to 100% CEC of Na-MMT. The adsorption of methylene blue onto SSTA-MMT experiments show that the adsorption kinetic of methylene blue onto SSTA-MMT can be best described by the pseudo-second-order model and that the adsorption isotherm of methylene blue is in good agreement with the Langmuir equation.
机译:通过使用阴离子表面活性剂硬脂酸钠制备硬脂酸钠改性的蒙脱石(SSTA-MMT),其结构的特征在于X射线和纤维衍射。结果表明,硬脂酸钠可以嵌入到蒙脱石的中间层中,层间距从12.74-48.05A扩增,含量的硬脂酸钠的加载浓度增加到Na-MMT的5%至100%CEC。亚甲基蓝于SSTA-MMT实验的吸附表明,亚甲基蓝于SSTA-MMT上的吸附动力学可以由伪二阶模型最佳地描述,并且与Langmuir方程吻合良好的亚甲基蓝色的吸附等温度。

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