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

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Abstract:

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 Å 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.

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Periodical:

Advanced Materials Research (Volume 178)

Pages:

29-34

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.178.29

Citation:

Cite this paper

Online since:

December 2010

Authors:

Dai Mei Chen, Jian Chen, Xu Ming Wang, Xin Long Luan, Hai Peng Ji, Feng Xu

Keywords:

Adsorption, Methylene Blue (MB), Modification, Montmorillonite, Sodium Stearate

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