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1977•Journal of Japan Oil Chemists SocietyOpen access

Studies on Adsorption of Surfactants on Activated Carbons. III.

Ikuo Abe, Katsumi Hayashi, Mutsuo Kitagawa

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Abstract

The adsorptivities of octadecyltrimethylammonium chloride (OTAC) on various activated carbons from aqueous solutions were investigated and the following results were obtained.1) The obtained adsorption isotherms apparently were of the Langmuir type.2) The occupied area (Sm) and Langmuir's constant (a) decreased with increasing the mean pore size of activated carbon.3) The amounts of adsorption increased with increasing pH of the solution.4) With the decrease in activation temperature of activated carbon, the effect of pH on adsorption of OTAC on the activated carbon increased.5) The effect of the anion of coexisting electrolyte on adsorption was much larger than that of the cation, and this order followed the lyotropic series.

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The adsorptivities of octadecyltrimethylammonium chloride (OTAC) on various activated carbons from aqueous solutions were investigated and the following results were obtained.1) The obtained adsorption isotherms apparently were of the Langmuir type.2) The occupied area (Sm) and Langmuir's constant (a) decreased with increasing the mean pore size of activated carbon.3) The amounts of adsorption increased with increasing pH of the solution.4) With the decrease in activation temperature of activated carbon, the effect of pH on adsorption of OTAC on the activated carbon increased.5) The effect of the anion of coexisting electrolyte on adsorption was much larger than that of the cation, and this order followed the lyotropic series.

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Available abstract

The adsorptivities of octadecyltrimethylammonium chloride (OTAC) on various activated carbons from aqueous solutions were investigated and the following results were obtained.1) The obtained adsorption isotherms apparently were of the Langmuir type.2) The occupied area (Sm) and Langmuir's constant (a) decreased with increasing the mean pore size of activated carbon.3) The amounts of adsorption increased with increasing pH of the solution.4) With the decrease in activation temperature of activated carbon, the effect of pH on adsorption of OTAC on the activated carbon increased.5) The effect of the anion of coexisting electrolyte on adsorption was much larger than that of the cation, and this order followed the lyotropic series.

Key concepts: Adsorption, Activated carbon, Chemistry, Aqueous solution, Langmuir, Electrolyte, Inorganic chemistry, Chloride

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