In the present study, we have synthesized polythiophene–Al₂O₃ based nanosorbent and removed Pb²⁺, Cd²⁺ and Zn²⁺ ions from waste water. The polythiophene–Al₂O₃ (PTh–Al₂O₃) based nanosorbent has been characterized by different analytical methods such as FTIR, FESEM, powder XRD and EDX. The adsorption study was included contact time, temperature, dosage, concentrations and pH. The maximum adsorption was achieved at optimized conditions such as contact time 60 min, dosage 1 g and pH 6. The adsorption efficiencies for Pb²⁺, Cd²⁺ and Zn²⁺ ions have been recorded 69.9, 49.9 and 30.2% at contact time 60 min, 84.9, 73.9 and 69.5% at pH 6 and 65.8, 43.7 and 23.2% at the dosage of sorbent 1 g, respectively. The equilibrium data of adsorption were tested with different kinetic and isothermal models and the equilibrium data of adsorption best fitted to Langmuir, Freundlich, Temkin, pseudo first order and intra particles diffusion models.

中文翻译：

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聚噻吩-Al 2 O 3基纳米吸附剂的合成，表征及其在去除Pb 2+，Cd 2+和Zn 2+离子中的应用

在本研究中，我们合成了基于聚噻吩-Al ₂ O ₃的纳米吸附剂，并从废水中去除了Pb 2 ⁺，Cd ²⁺和Zn ²⁺离子。聚噻吩-Al ₂ O ₃（PTh-Al ₂ O ₃）基纳米吸附剂已通过不同的分析方法进行了表征，例如FTIR，FESEM，粉末XRD和EDX。吸附研究包括接触时间，温度，剂量，浓度和pH。在最佳条件下（例如接触时间60分钟，剂量1 g和pH 6）可实现最大吸附。Pb2 ⁺，Cd ²⁺和Zn ²⁺的吸附效率接触时间60分钟记录到的离子浓度分别为69.9％，49.9％和30.2％，pH为6时分别为84.9、73.9和69.5％，吸附剂量为1 g时分别为65.8、43.7和23.2％。用不同的动力学和等温模型测试了吸附的平衡数据，吸附的平衡数据最适合于Langmuir，Freundlich，Temkin，拟一级和内部粒子扩散模型。