Leaf-based adsorbents have attracted many researchers due to their low cost, high efficiency, and high adsorption capacity. In the present study, the performance of Cotinus Coggygria leaves on the adsorptive removal of Safranine T dye from an aqueous solution was investigated. Before the adsorption studies, the inverse gas chromatography (IGC) method was performed to observe the surface properties of Cotinus Coggygria, for the first time. With the data obtained from IGC analysis, the acidity/basicity degree of the adsorbent surface and the required conditions for the highest adsorption capacity were determined. The surface of the leaves was found to have a basic characteristic. The adsorption studies were carried out under different parameters including contact time, temperature, pH, initial dye concentration, and adsorbent dosage. The maximum percentage of Safranine T was obtained as 93.62% at pH = 7 and 55 °C. The different isotherms were applied namely Langmuir, Freundlich, D-R, Harkins-Jura, and Temkin isotherm models. From the correlation coefficients, it was obtained that the adsorption took place in agreement with the Langmuir isotherm. The adsorption capacity showed the maximum at 2000 mg/g in pH = 7 at 55 °C. As a result of the kinetic studies, it was seen that adsorption followed the pseudo-second-order kinetic model. When thermodynamic parameters were obtained, it was seen that the adsorption occurred exothermically and spontaneously. This study suggests that Cotinus Coggygria leaves are highly efficient biobased materials as an adsorbent.

叶基吸附剂因其低成本、高效率和高吸附容量而吸引了许多研究人员。在本研究中，研究了Cotinus Coggygria叶从水溶液中吸附去除番红 T 染料的性能。在吸附研究之前，使用逆气相色谱 (IGC) 方法观察Cotinus Coggygria的表面特性，第一次。利用从 IGC 分析获得的数据，确定了吸附剂表面的酸碱度和最高吸附容量所需的条件。发现叶子的表面具有基本特征。吸附研究在不同参数下进行，包括接触时间、温度、pH、初始染料浓度和吸附剂剂量。在 pH = 7 和 55 °C 下，Safranine T 的最大百分比为 93.62%。应用了不同的等温线，即 Langmuir、Freundlich、DR、Harkins-Jura 和 Temkin 等温线模型。从相关系数可以看出，吸附发生与朗缪尔等温线一致。吸附容量在 2000 mg/g 时显示出最大值，pH = 7，55 °C。作为动力学研究的结果，伪二级动力学模型。当获得热力学参数时，可以看出吸附是放热和自发发生的。这项研究表明Cotinus Coggygria叶子是一种高效的生物基材料作为吸附剂。