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首页> 外文期刊>Journal of Polymers and the Environment >High Removal Capacity of Arsenic from Drinking Water Using Modified Magnetic Polyurethane Foam Nanocomposites
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High Removal Capacity of Arsenic from Drinking Water Using Modified Magnetic Polyurethane Foam Nanocomposites

机译：使用改性磁性聚氨酯泡沫纳米复合材料从饮用水中砷的高除去能力

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摘要

In this study, a novel polyurethane foam (PU) nanocomposite adsorbent based on silane-modified magnetic iron-oxide nanoparticles (Fe3O4@APTES) is synthesized via a low cost and simple in situ polymerization method for the removal of arsenic ions from aqueous solutions. The chemical structure and surface morphology of the prepared nanoparticles and adsorbent were characterized using Fourier transform infrared spectroscopy, attenuated total reflection, scanning electron microscopy, transmission electron microscopy, and energy-dispersive X-ray spectroscopy. Inductively coupled plasma mass spectrometry was used to measure the arsenic concentration of the treated solutions. Sorption isotherms models were applied to determine the adsorption mechanism and modeling parameters. The removal capacity of the modified PU foam was at its highest during a contact time of four hours which resulted in a removal capacity of 95%. Kinetic studies were conducted to determine the adsorption capacity and the uptake rate of arsenic. A Pseudo-order model was found to be the best fit model for adsorption. The prepared adsorbent can be separated from the solution by using an external magnet field.
机译：在该研究中，通过低成本和简单的原位聚合方法合成基于硅烷改性的磁铁 - 氧化铁纳米颗粒（Fe3O4 @ Aptes）的新型聚氨酯泡沫（PU）纳米复合吸附剂，用于从水溶液中除去砷离子。使用傅里叶变换红外光谱，减弱的总反射，扫描电子显微镜，透射电子显微镜和能量分散X射线光谱表征制备的纳米颗粒和吸附剂的化学结构和表面形态。电感耦合等离子体质谱法用于测量处理过的溶液的砷浓度。吸附等温线模型用于确定吸附机制和建模参数。在4小时的接触时间期间，改性PU泡沫的去除能力最高，导致去除容量为95％。进行动力学研究以确定吸附能力和砷的摄取率。发现伪阶模型是吸附的最佳拟合模型。制备的吸附剂可以通过使用外部磁体场与溶液分离。

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