In this study, biosorption of Cu²⁺ ions on to tobacco leaves was investigated. The optimum conditions for biosorption of Cu²⁺ ions onto tobacco leaves were determined: pH – 4.0, temperature – 20 °C, shaking rate – 200 rpm, biosorbent dose – 0.4 g, and initial Cu²⁺ ion concentration – 25 mg/L. The state of equilibrium lasted for 60 minutes. COD, TN and TP analyses were performed to determine the negative impacts of biosorbent on the system. Compliance of equilibrium data of tobacco biosorption of Cu²⁺ ions to Langmuir, Freundlich, Temkin and D–R isotherm models was also investigated. High correlations were achieved in all four isotherm models. Within the scope of kinetic tests, it was observed that biosorption of Cu²⁺ ions with tobacco biosorbent complied with the pseudo second-order kinetic rate constant. FTIR, SEM and EDX analyses were carried out to investigate the surface characteristics and chemical structure of tobacco biosorbent and absorption of Cu²⁺ ions were observed. It was concluded that tobacco leaves are a highly efficient (90.72%) sorbent that can remove Cu²⁺ ions from wastewater.

在这项研究中，研究了Cu ²⁺离子对烟叶的生物吸附。确定了将Cu ²⁺离子生物吸附到烟叶上的最佳条件：pH – 4.0，温度– 20°C，振荡速率– 200 rpm，生物吸附剂量– 0.4 g和初始Cu ²⁺离子浓度– 25 mg / L 。平衡状态持续60分钟。进行了COD，TN和TP分析，以确定生物吸附剂对系统的负面影响。还研究了烟草对Cu ²⁺离子的生物吸附平衡数据对Langmuir，Freundlich，Temkin和D–R等温线模型的符合性。在所有四个等温线模型中均实现了高度相关。在动力学测试的范围内，观察到对Cu ^2+的生物吸附含烟草生物吸附剂的离子符合伪二级动力学速率常数。进行了FTIR，SEM和EDX分析，以研究烟草生物吸附剂的表面特征和化学结构，并观察到Cu ²⁺离子的吸收。结论是，烟叶是一种高效（90.72％）的吸附剂，可以从废水中去除Cu ²⁺离子。