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Preparation of a novel polyacrylic acid and chitosan interpenetrating network hydrogel for removal of U(vi) from aqueous solutions

机译:用于从水溶液中除去U(VI)的新型聚丙烯酸和壳聚糖互持续网络水凝胶的制备

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摘要

A clean and simple method has been developed for preparation of interpenetrating polymer networks using polyacrylic acid (PAA) and chitosan (CS) for extraction of uranium from polluted water. The peak of Fourier transform infrared spectroscopy (FTIR) occurred at 928cm(-1) indicating combination of uranium and PAA/CS. The energy dispersive X-ray (EDX) and the scanning electron microscope (SEM) studies illustrated the formation of a crosslinking structure and excellent binding ability of uranium on PAA/CS. The maximum adsorption capacity was 289.6 mg g(-1) calculated using the equation of the Langmuir model. The adsorption capacity reached a plateau at pH 4 and the sorption process fits the pseudo-second-order model well. The PAA/CS composite has stability of reuse, with the adsorbent capacity decreasing slowly with increasing usage frequency. The experimental results confirm that the PAA/CS hydrogel could be a novel alternative for highly efficient removal of uranium from wastewater.
机译:已经开发了一种清洁和简单的方法,用于使用聚丙烯酸(PAA)和壳聚糖(CS)制备互穿的聚合物网络,用于从污染的水中提取铀。 傅立叶变换红外光谱(FTIR)的峰值发生在928cm(-1)中,表明铀和PAA / Cs的组合。 能量分散X射线(EDX)和扫描电子显微镜(SEM)研究说明了交联结构和优异的PAA / Cs上的优异结合能力。 使用Langmuir模型的等式计算的最大吸附容量为289.6mg g(-1)。 吸附能力达到pH4的高原,吸附过程适合伪二阶模型。 PAA / CS复合材料具有重用的稳定性,吸附剂容量随着使用频率的增加而缓慢降低。 实验结果证实,PAA / CS水凝胶可以是一种新的替代方案,用于从废水中高效除去铀。

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  • 来源
    《RSC Advances》 |2018年第23期|共8页
  • 作者单位

    Fuzhou Univ Coll Chem Fuzhou 350108 Fujian Peoples R China;

    Fuzhou Univ Coll Chem Fuzhou 350108 Fujian Peoples R China;

    Fuzhou Univ Coll Chem Fuzhou 350108 Fujian Peoples R China;

    Fuzhou Univ Coll Chem Fuzhou 350108 Fujian Peoples R China;

    Fuzhou Univ Coll Chem Fuzhou 350108 Fujian Peoples R China;

    Fuzhou Univ Coll Chem Fuzhou 350108 Fujian Peoples R China;

    Fuzhou Univ Coll Chem Fuzhou 350108 Fujian Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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