Efficient removal of aluminium (III) from aqueous solutions via ion-flotation technique using aluminon as a chelating agent and oleic acid as a surfactant

摘要: In the current work, a green, simple and rapid method was developed and used for the separation and preconcentration of aluminium(III) from aqueous solutions via the ion-flotation technique. Aluminon has been used as an organic chelating agent and combined with aluminium(III) forming a reddish complex. The oleic acid (HOL) was used as a surfactant to float the formed complex to the scum layer. The concentration of aluminium(III) was determined spectrometrically using the ICP-OES instrument at 396.153 nm. 1.0 mol/L HCl was used as a suitable eluting agent for the scum layer before introduction to the ICP-OES instrument. The dissimilar factors influencing the ion-flotation procedure as pH, the concentration of (Al(III), aluminon, and HOL), surfactant type, sample volume, temperature, shaking time, and ionic strength were studied and adjusted. About 100% of aluminium(III) was floated and separated at 25°C …