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Towards novel adsorbents: the ratio of PVA/chitosan blended hydrogels on the copper (II) ion adsorption

机译：朝着新型吸附剂：PVA /壳聚糖混合水凝胶与铜（II）离子吸附的比例

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Recently, the one of most environments problems is a heavy metal contamination in water therefore it is very important to remove these metal before discharging to environment. In this work, the efficacy of Cu (II) adsorption on the polymer hydrogel blends of poly(vinyl alcohol) and chitosan (PVA/CS), at various polymer compositions, from the aqueous solution was investigated. The Fourier transform infrared spectroscopy was used for verify the chemical structure of polymer hydrogels. Water absorbency of the polymer hydrogel films was investigated by water swelling ratio measurement. We found that the PVA/CS were crosslinked by using glutaraldehyde, and the PVA/CS hydrogel at the ratio of 100/0 highly showed the water swelling ratio due to the PVA has highly hydrophilicity property. In addition, the adsorption capacity of the Cu (II) ion on the PVA/CS hydrogel adsorbents were investigated. All of samples showed good adsorption capacity, the efficacy of adsorption depend on the composition of polymer hydrogel. Increasing adsorption capacity with increasing the CS content within the network. Finally, the kinetic of adsorption also was studied. It was found that the pseudo-second-order kinetic, having up to 1.00 of a correlation coefficient, is best described the adsorption process of this adsorbent.
机译：最近，大多数环境的问题是水中的重金属污染，因此在向环境排放之前除去这些金属是非常重要的。在这项工作中，研究了Cu（ii）在各种聚合物组合物中对聚（乙烯醇）和壳聚糖（PVA / Cs）的聚合物水凝胶共混物，在各种聚合物组合物中，从水溶液中进行吸附的疗效。傅里叶变换红外光谱用于验证聚合物水凝胶的化学结构。通过水溶胀比测量研究了聚合物水凝胶膜的吸水性。我们发现PVA / Cs通过使用戊二醛交联，并且PVA / CS水凝胶以100/0的比例高出由于PVA引起的水溶胀比具有高度亲水性。另外，研究了Cu（II）离子对PVA / CS水凝胶吸附剂的吸附能力。所有样品显示出良好的吸附能力，吸附的功效取决于聚合物水凝胶的组成。随着增加网络内的CS内容，增加吸附能力。最后，研究了吸附的动力学。发现，具有高达1.00个相关系数的伪二阶动力学最佳地描述了该吸附剂的吸附过程。

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