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首页> 外文期刊>Journal of Polymers and the Environment >An Eco-friendly Porous Poly(imide-ether)s for the Efficient Removal of Methylene Blue: Adsorption Kinetics, Isotherm, Thermodynamics and Reuse Performances
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An Eco-friendly Porous Poly(imide-ether)s for the Efficient Removal of Methylene Blue: Adsorption Kinetics, Isotherm, Thermodynamics and Reuse Performances

机译：有效去除亚甲蓝的环保多孔聚（酰亚胺醚）：吸附动力学，等温线，热力学和再利用性能

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摘要

Poly(imide-ether)s (PIEs), which is porous in nature, was synthesized using aromatic diamines and dianhydrides via the solution polycondenzation reaction. In the process, PIEs was used as an adsorbent for the removal of basic dye [Methylene blue (MB)] from the aqueous solution. The structure and the thermal stability of PIEs were characterized by FT-IR, H-1-NMR, XRD and TG analysis, and the adsorption behaviour of the PIEs was confirmed using UV/Visible, FT-IR and SEM with EDX analysis. Batch adsorption experiments were carried out and their parameters (pH 6.95), initial MB concentration (200mg/L), adsorbent dosage (50mg), contact time (120min) and temperature (28 degrees C) were optimized. The batch adsorption experimental data of the effect of contact time, initial MB concentration and temperature were evaluated using the adsorption kinetics (Pseudo-first order, Pseudo-second order, Elovich and Intra-particle diffusion kinetic), isotherm (Langmuir, Freundlich, Redlich-Peterson and Sips isotherms) and thermodynamic models respectively. In the study, adsorption of MB onto PIEs followed Pseudo-second kinetics and found to be the best fitting model based on the obtained experimental data. The homogeneity and heterogeneity surface nature of PIEs were elucidated with two and three isotherm parameters respectively. The adsorption thermodynamic study indicates that the adsorption of MB onto PIEs was endothermic and spontaneous in nature. The adsorbed PIEs solid waste was utilized to prepare the polymer composite, and its property was characterized.[GRAPHICS].
机译：通过溶液缩聚反应，使用芳族二胺和二酐合成了本质上是多孔的聚酰亚胺醚（PIE）。在此过程中，PIE被用作吸附剂，用于从水溶液中去除碱性染料[亚甲基蓝（MB）]。通过FT-IR，H-1-NMR，XRD和TG分析表征了PIE的结构和热稳定性，并使用UV / Visible，FT-IR和SEM以及EDX分析确定了PIE的吸附行为。进行了批量吸附实验，并优化了它们的参数（pH 6.95），初始MB浓度（200mg / L），吸附剂剂量（50mg），接触时间（120min）和温度（28℃）。使用吸附动力学（伪一级，伪二级，Elovich和粒子内扩散动力学），等温线（Langmuir，Freundlich，Redlich）评估接触时间，初始MB浓度和温度影响的间歇吸附实验数据。 -Peterson和Sips等温线）和热力学模型。在研究中，MB在PIE上的吸附遵循伪秒动力学，并且基于获得的实验数据，发现它是最佳拟合模型。分别用两个和三个等温线参数阐明了PIE的均质性和异质性表面性质。吸附热力学研究表明，MB在PIE上的吸附本质上是吸热的和自发的。利用吸附的PIEs固体废物制备聚合物复合材料，并对其性能进行了表征。

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