Abstract
Eggshell particles (ESP), a solid bio-waste, treated with sodium dodecylsulfate (SDS) have been examined for the adsorption of some tailor-made cationic styrylpyridinium dyes. The adsorbent is characterized through Fourier transform infrared spectroscopy and scanning electron microscopy. The anionic headgroups of the surfactant bilayer on the SDS-treated ESP (SDS-ESP) provide avenue for binding with the dye molecules. Dependence of equilibrium adsorption capacity on various adsorption parameters and effects of substituent and hydrophobic tail of the adsorbate on adsorption are enumerated. Physical adsorption obeying pseudo-second order kinetics has been proposed. (Supplemental materials are available for this article. Go to the publisher's online edition of Journal of Dispersion Science and Technology to view the free supplemental file.)
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