Detection, determination and removal of iron (III) from wastewater

Polyurethane foam are white flexible polymer characterized with urethane group. PUF can be modified after different reactions to develop a new functional groups. Batch technique was studies at different pH, time and temperature to get best conditions for removal of pollutants. The best Isotherm models for adsorption of Fe3+ is D-R isotherm. Pseudo second order is the best fitted for kinetic studies for adsorption process. Thermodynamic parameters indicate spontaneous adsorption process of iron. Exothermic nature for adsorption of Fe3+ ions onto TUPUF/ZnO. ΔS values -0.108 KJ/mol K for Fe3+, which means decreasing in randomness as interface between adsorbent and adsorbate. In application at real sample, RSD% value is 2.9% for Fe3+ ions and that is a good accuracy for removal of different types of pollutants using TUPUF/ZnO.