Abstract Magnetic nanoparticles modified with the ionic liquid were prepared. The kinetics, adsorption isotherms, thermodynamics and spectroscopic analyses of the removal of the reactive yellow 15 by ultrasound assisted adsorption onto magnetic nanoparticles were investigated. Several variables affecting the removal of the reactive yellow 15 include amount of sorbent, pH, ultrasonic power and reaction time, salt concentration, and desorption conditions were studied and optimized. Three kinetic models were studied to analyze the adsorption mechanism. It was found that the adsorption kinetics followed a pseudo-second-order model for the dye concentration range studied in this study. Dye adsorption equilibrium data were well fitted to the Langmuir isotherm and the maximum monolayer capacity qmax was calculated from the Langmuir as 63.69 mg g−1. A thermodynamic parameter was studied by the Gibbs free energy function. The results obtained showed that the MNP modified with the IL is an appropriate adsorbent for removal of reactive yellow 15 from waste water.

中文翻译：

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使用共价二甲基十八烷基[3-(三甲氧基甲硅烷基丙基)]氯化铵离子液体包覆的磁铁矿纳米颗粒去除水样中的活性黄15

摘要 制备了离子液体修饰的磁性纳米粒子。研究了通过超声辅助吸附到磁性纳米颗粒上去除活性黄 15 的动力学、吸附等温线、热力学和光谱分析。研究并优化了影响活性黄 15 去除的几个变量，包括吸附剂的量、pH、超声波功率和反应时间、盐浓度和解吸条件。研究了三种动力学模型来分析吸附机理。发现吸附动力学遵循本研究中研究的染料浓度范围的准二级模型。染料吸附平衡数据与 Langmuir 等温线拟合良好，最大单层容量 qmax 由 Langmuir 计算为 63.69 mg g-1。通过吉布斯自由能函数研究热力学参数。获得的结果表明，用离子液体改性的 MNP 是去除废水中活性黄 15 的合适吸附剂。