Abstract
Blue baby syndrome (methemoglobinemia) disease and algae growth (eutrophication) was occurred due to surplus nitrate (NO3-) and phosphate (PO43-) in aqueous solution. To overcome these problems, in this study zirconium (Zr(IV)) incorporated gelatin (Gel)/kaolin (KN) (GelKN) composite namely Zr@GelKN biocomposite was synthesized for effective retention of NO3- and PO43-. The significant instrumentation studies like TGA, BET, FTIR and SEM with EDAX of the adsorbent materials were carried out. The parameters accountable for adsorption were optimized in a good manner. The metal ion assisted polymeric clay composite involves the electrostatic attraction, ion-exchange and complexation mechanism on NO3- and PO43- removal. The kinetics, thermodynamic parameters and isotherms were explored at different temperature. To diminish the cost of Zr@GelKN composite the regeneration study was performed. The applicability of Zr@GelKN composite was also examined for the collected field waste-water sample. (C) 2020 Elsevier B.V. All rights reserved.