Green adsorbents from solid wastes for water purification application

We developed a green adsorbent material from orange fruit peel for the removal of dyes from polluted water. The conversion of orange peels into green adsorbent was done by direct sunlight without using any chemical treatment. The adsorption study was carried with three different dyes namely, brilliant green, methyl violet, and solochrome black. Different concentrations of the dye solutions were prepared and evaluated for adsorption characteristics. The properties of the orange fruit peel and its interaction with dyes have been characterized by various analytical techniques. The UV-vis, Fourier transform infrared spectroscopy and visible color change results suggest that orange peels were effective toward removal of dyes from water. This method provides a simple, green and low-cost strategy for water purification. (C) 2017 Elsevier Ltd. All rights reserved.