Abstract
AbstractThe adsorption characteristics of tritiated dodecylamine and carbon-14 tagged starch on quartz were determined over a wide range of concentrations and pH. The effect of adsorption on floatability was determined using a modified Hallimond tube.Amine adsorption was found to obey the equation Γ = k cn. Starch additions increased the slope in dilute amine solutions and decreased the slope in concentrated amine solutions. Adsorption of amine increased with pH, with a sharp rise occurring between pH 8 and pH 10.Starch adsorption increased with concentration. Increasing amine concentrations up to 10−4 molar amine increased the starch adsorption. Further amine additions decreased starch adsorption.Floatability increased with amine concentration up to 10−3 molar amine but decreased in 10−2 molar amine solutions. A flotation peak was observed in slightly alkaline solutions. The depressant effect of starch is related to the relative amounts of amine and starch adsorbed.The mutual adsorption effects of amine ...
Submitted Version (
Free)
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call