Abstract
The article describes the analysis of the adsorption properties of commercially available fibers. Negatively charged polystyrene particles were used for the adsorption on the selected fibers at different pH ranges of the used electrolyte. The streaming potential method proved useful in the assessment of the electrokinetic properties of the fibers. As expected, good adsorption was observed for most fibers that were positively charged in the conditions of the experiments due to electrostatic attraction. Interestingly, for some fibres an increase in zeta potential was observed in the conditions in which both the adsorbent and the adsorbate were negatively charged. An explanation was proposed for this phenomenon, but could not be proved. The adsorption in the conditions of the isoelectric points of the fibers resulted in little to no changes in their zeta potential in most cases. Moreover, in some cases, the adsorption study produced scattered and irreproducible results. This behavior may have its origin in the nature of the selected fibers, which were mostly technical fibers for applications in fields other than adsorption.
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