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Please use this identifier to cite or link to this item: http://hdl.handle.net/2080/321

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contributor.authorParia, S-
contributor.authorYuet, P K-
date.accessioned2006-09-06T08:17:29Z-
date.available2006-09-06T08:17:29Z-
date.issued2006-
identifier.citationIndustrial Engineering and Chemistry Research, Vol 45, No 2, P 712-718en
identifier.urihttp://hdl.handle.net/2080/321-
descriptionCopyright for this article belongs to American Chemical Society DOI:10.1021/ie050808y S0888-5885(05)00808-0en
description.abstractThe kinetic and equilibrium studies of the adsorption of four cationic surfactants (pyridinium bromide) with different chain lengths (C16, C14, C12, and C10) onto sand are presented here. The adsorption and desorption behavior in the absence and presence of different electrolytes (NaCl, CaCl2, and Na2SO4) are compared in batch and continuous column experiments. The kinetic studies show that the rates of adsorption of pyridinium bromide surfactants on sand surfaces are very high (~70% of saturation adsorption occurs in 30 s) and are almost the same at low concentration (0.5 mM) for different chain lengths. The amount of surfactant adsorbed is enhanced by the presence of electrolyte because of a reduction in electrostatic repulsion among the headgroups, whereas the effect of the valence of coion does not appear to be important. Desorption studies based on column experiments show that a lower amount of surfactant is retained when eluted with electrolyte solution instead of pure water.en
format.extent372924 bytes-
format.mimetypeapplication/pdf-
language.isoen-
publisherACSen
titleEffects of Chain Length and Electrolyte on the Adsorption of n-Alkylpyridinium Bromide Surfactants at Sand-Water Interfacesen
typeArticleen
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