聚醚砜超滤混合基质膜去除水溶液中重金属离子性能的比较研究

Iraqi Journal of Chemical and Petroleum Engineering Pub Date : 2022-06-29 DOI:10.31699/ijcpe.2022.2.3

Haider Nezar Abdulameer, S. Al‐Jubouri

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引用次数: 3

摘要

研究了掺入NaX沸石晶体作为亲水添加剂的聚醚砜（PES）超滤膜对水溶液中锌（II）和铅离子Pb（II）的去除效果。研究了NaX沸石含量对渗透通量和去除效率的影响。结果表明，在聚合物基体中加入沸石可以提高渗透通量。所有沸石/PES基质膜的渗透通量都高于原始膜。使用所有制备的膜对Zn（II）离子的去除没有观察到显著的改善，因为去除率没有提高到29.2%以上。然而，使用含有0.9%重量沸石的膜，Pb（II）的去除率提高到97%。此外，发现该膜比其他制备的膜具有更高的离子交换能力。采用两种等温线模型（Langmuir模型和Freundlich模型）对离子交换平衡数据进行分析。实验数据最符合Langmuir模型，R2为0.889。

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A Comparison Study for The Performance of Polyethersulfone Ultrafiltration Mixed Matrix Membranes in The Removal of Heavy Metal Ions from Aqueous Solutions

Polyethersulfone (PES) ultrafiltration membrane blending NaX zeolite crystals as a hydrophilic additive was examined for zinc (II) and lead ions Pb (II) removal from aqueous solutions. The effect of NaX zeolite content on the permeation flux and removal efficiency was studied. The results showed that adding zeolite to the polymer matrix enhanced the permeation flux. The permeation flux of all the zeolite/PES matrix membranes was higher than the pristine membrane. No significant improvement was observed in the removal of Zn (II) ions using all prepared membranes as the removal percentage did not raise above 29.2%. However, the removal percentage of Pb (II) ions was enhanced to 97% using a membrane containing 0.9%wt. zeolite. Also, it was found that this membrane has a higher ion exchange capacity than the other prepared membranes. Two isotherm models (Langmuir model, and Freundlich model) were employed in the analysis of the ion exchange equilibrium data. The experimental data best fitted the Langmuir model with R2 of 0.889 than the Freundlich model.

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来源期刊

Iraqi Journal of Chemical and Petroleum Engineering

自引率

0.00%

发文量

审稿时长

12 weeks