Treatment of Crystal Violet from Synthetic Solution Using Membranes Doped with Natural Fruit Extract

Abstract

Innovative polymer membranes with and without natural fruit extract (rosehip) are characterized in terms of their ability of treating a solution containing Crystal violet by a three-compartment laboratory scale electro-dialysis cell. Electro-dialysis is performed at different time intervals and using a constant voltage of 15 V. The dye removal percentage (%) and energy consumption are calculated. The highest value of dye removal is obtained for 90 min (>96%) for membranes doped with natural fruit extract. Water uptake is also determined for the prepared membranes. The physical and chemical properties of the final membranes are investigated by Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and thermal gravimetric analysis-differential scanning calorimetry (TGA-DSC). FTIR spectra indicated no significant modifications of membrane structure due to the small amount of natural fruit extract. The surface morphology shows that the prepared membranes doped with natural fruit extract is more dense and compact. TGA results shows that the prepared membranes are stable up to 330 °C.