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首页> 外文期刊>Polymers for advanced technologies >A novel green biosorbent from chitosan modified by sodium phytate for copper (II) ion removal
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A novel green biosorbent from chitosan modified by sodium phytate for copper (II) ion removal

机译：由氯酸钠的新型绿色生物吸附剂由植物钠（II）离子去除

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摘要

> A novel kind of adsorbent bead was prepared from chitosan (CS) by ionic‐linked with sodium phytate (SP) and then covalent cross‐linked with epichlorohydrin (ECH) by nonsolvent‐induced phase separation. The structure of the beads was characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, and X‐ray photoelectron spectroscopy. The adsorption properties of the beads for Cu(II) ions under different adsorption conditions were investigated. The maximum adsorption capacity of Cu(II) ions was 177.1?mg?g ?1 at the conditions of pH of 5.2, temperature of 50°C, and initial Cu(II) ion concentration of 728.3?mg?L ?1 . The adsorption isotherm of Cu(II) ions on the CS/SP/ECH beads was well correlated with the Langmuir isotherm model, and the whole adsorption process could be better followed the pseudo‐second‐order kinetic model. Moreover, the CS/SP/ECH beads still exhibited good adsorption capacity even after the 15th regeneration cycles.
机译： >通过离子从壳聚糖（cs）制备新的吸附珠粒 - 用植物钠（SP）和并通过非olvent诱导的相分离与表氯醇（ECH）交联的共价。通过扫描电子显微镜，傅里叶变换红外光谱和X射线光电子能谱，表征珠粒的结构。研究了Cu（II）离子在不同吸附条件下的珠子的吸附性能。 Cu（II）离子的最大吸附容量为177.1μm，在pH的pH值为5.2，温度为50℃的条件下为177.1×g 1 / sup>，初始Cu（ii）离子浓度为728.3？ mg？l ？1 。 CS / SP / ECH珠粒上Cu（II）离子的吸附等温线与Langmuir等温模型良好相关，并且整个吸附过程可以更好地遵循伪二阶动力学模型。此外，即使在第15次再生循环之后，CS / SP / ECH珠子仍然表现出良好的吸附能力。

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  • 作者

    Kong Aiqun; He Benqiao; Liu Guangrui; Lu Xiaosong; Hao Yingdong; Bao Xinyao; Yan Feng; Li Jianxin;

  • 作者单位

    State Key Laboratory of Separation Membranes and Membrane ProcessesTianjin Polytechnic UniversityTianjin 300387 China;

    State Key Laboratory of Separation Membranes and Membrane ProcessesTianjin Polytechnic UniversityTianjin 300387 China;

    State Key Laboratory of Separation Membranes and Membrane ProcessesTianjin Polytechnic UniversityTianjin 300387 China;

    State Key Laboratory of Separation Membranes and Membrane ProcessesTianjin Polytechnic UniversityTianjin 300387 China;

    State Key Laboratory of Separation Membranes and Membrane ProcessesTianjin Polytechnic UniversityTianjin 300387 China;

    State Key Laboratory of Separation Membranes and Membrane ProcessesTianjin Polytechnic UniversityTianjin 300387 China;

    State Key Laboratory of Separation Membranes and Membrane ProcessesTianjin Polytechnic UniversityTianjin 300387 China;

    State Key Laboratory of Separation Membranes and Membrane ProcessesTianjin Polytechnic UniversityTianjin 300387 China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 高分子化合物工业（高聚物工业）;
  • 关键词

    adsorption; chitosan; cross‐linked; regeneration; sodium phytate;

    机译：吸附;壳聚糖;交联;再生;植酸钠;

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