Parameters study on the adsorption of chromium using a nanocomposite of nickel ferrite and polyaniline

This dataset for a research project delves into the synthesis and application of a highly effective nanocomposite, PANI-NSA/NiFe2O4, for the removal of toxic chromium (Cr (VI)) from synthetic wastewater. The nanocomposite, synthesized through the doping of polyaniline with 2-naphthalene sulfonic acid, exhibits tubular-shaped rods that significantly enhance its surface area. Through meticulous study and optimization of adsorption parameters such as solution pH, adsorbent dosage, agitation time, and initial pollutant concentration, the project achieved an impressive 99.9% removal of 50 mg/L Cr (VI) at pH 2 and a catalyst loading of 1 g/L. Isotherm models, including Freundlich, Langmuir, and Two-Surface Langmuir, were employed to analyze the adsorption data, with the latter proving most fitting. Kinetic studies unveiled a rapid initial adsorption phase followed by a slower process, reaching maximum removal within 24 hours. The project also explored temperature effects, revealing increased adsorption capacity at higher temperatures, with thermodynamic analysis indicating an endothermic and spontaneous process.