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.

本研究项目数据集深入探究了高效纳米复合材料PANI-NSA/NiFe₂O₄的合成及其在去除合成废水中有毒铬（Cr(VI)）的应用。该纳米复合材料通过聚苯胺掺杂2-萘磺酸制备而成，呈现管状棒状结构，显著提升了其比表面积。通过对溶液pH值、吸附剂剂量、搅拌时间及初始污染物浓度等吸附参数的细致研究与优化，项目在pH值为2、催化剂负载量为1g/L的条件下，实现了对50mg/L Cr(VI)令人瞩目的99.9%去除率。研究采用弗伦德里希（Freundlich）、朗缪尔（Langmuir）及双表面朗缪尔（Two-Surface Langmuir）等温模型分析吸附数据，其中双表面朗缪尔模型拟合度最佳。动力学研究揭示，吸附过程初始阶段快速，随后进入缓慢阶段，24小时内即可达到最大去除效果。项目还探究了温度对吸附的影响，发现高温下吸附容量增加；热力学分析表明，该吸附过程为吸热且自发的过程。