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1999•Journal of Dispersion Science and TechnologyRequires access

Adsorption of Methylene Blue on Montmorillonite

Guangming Chen, Jingjun Pan, Busing Han, Haike Yan

Open publisher page 77 citations

Abstract

Adsorption of Methylene Blue ( MB) on Na-, Fe- and Al-montmorillonite suspensions at 298.15 K were studied. The effect of different exchangeable cation on the adsorption amount of MB was determined. The results show that methylene blue cations( MB+ ) replace Na∗ more easily than they do Fe3+ and Al3 + The adsorption isotherms on the three montraorillonites were all of Langmuir type, except that the isouHerm of MB on Na-montmorillonite presents nonmonotonic curve at low surface coverage. The specific surface areas in suspension were calculated by( MB 3 + )method, and Na− is more effective to determine the specific surface area by MB method in suspension than Fe3 + and A3 + The discrepancy of the specific surface area measured by MB and BET method was discussed.

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What this paper is about

Adsorption of Methylene Blue ( MB) on Na-, Fe- and Al-montmorillonite suspensions at 298.15 K were studied. The effect of different exchangeable cation on the adsorption amount of MB was determined. The results show that methylene blue cations( MB+ ) replace Na∗ more easily than they do Fe3+ and Al3 + The adsorption isotherms on the three montraorillonites were all of Langmuir type, except that the isouHerm of MB on Na-montmorillonite presents nonmonotonic curve at low surface coverage. The specific surface areas in suspension were calculated by( MB 3 + )method, and Na− is more effective to determine the specific surface area by MB method in suspension than Fe3 + and A3 + The discrepancy of the specific surface area measured by MB and BET method was discussed.

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Available abstract

Adsorption of Methylene Blue ( MB) on Na-, Fe- and Al-montmorillonite suspensions at 298.15 K were studied. The effect of different exchangeable cation on the adsorption amount of MB was determined. The results show that methylene blue cations( MB+ ) replace Na∗ more easily than they do Fe3+ and Al3 + The adsorption isotherms on the three montraorillonites were all of Langmuir type, except that the isouHerm of MB on Na-montmorillonite presents nonmonotonic curve at low surface coverage. The specific surface areas in suspension were calculated by( MB 3 + )method, and Na− is more effective to determine the specific surface area by MB method in suspension than Fe3 + and A3 + The discrepancy of the specific surface area measured by MB and BET method was discussed.

Key concepts: Adsorption, Montmorillonite, Methylene blue, Chemistry, Chemical engineering, Nuclear chemistry, Organic chemistry, Catalysis

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