Abstract
The adsorption of Methylene Blue on magnesium silicate prepared by three different methods at 30°and 90°was investigated in order to elucidate the mechanism of adsorption of Methylene Blue on porous magnesium silicate. The adsorption isotherm of Methylene Blue was well described by the Langmuir equation. The amount of Methylene Blue adsorbed on porous magnesium silicate was dominated by its total pore volume. It is suggested that the pores with radius smaller than 14.5Å are completely filled with Methylene Blue, while the pores with radius larger than 15Å remain partially unfilled.
