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首页> 外文期刊>Journal of Hazardous Materials >Adsorption of diclofenac sodium on bilayer amino-functionalized cellulose nanocrystals/chitosan composite
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Adsorption of diclofenac sodium on bilayer amino-functionalized cellulose nanocrystals/chitosan composite

机译：双氯芬酸钠在双层氨基官能化纤维素纳米晶体/壳聚糖复合材料上的吸附

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摘要

Residual diclofenac sodium (DS) in the environment is harmful to human health. A promising method for DS removal is the use of adsorbents functionalized with amino groups that can form an ionic bond with the carboxyl group of DS at a suitable pH. In this work, a novel composite adsorbent composed of cellulose nanocrystals (CNC) and chitosan (CS) has been synthesized and functionalized by ethylenediamine (ED) in both layers. Characterization methods, including scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray spectroscopy, Fourier-transform infrared spectrometry, and X-ray photoelectron spectroscopy, were used to confirm the morphology and synthetic mechanism of the double- amino-functionalized adsorbent. Based on the optimization of adsorption conditions and modeling of the adsorption mechanism, the DS adsorption process on CNC-ED@CS-ED involves chemical adsorption, and the maximum adsorption capacity obtained from the Langmuir model is 444.44 mg/g. CNC-ED@CS-ED exhibits good adsorption capacity and high sustainability; thus, it is a promising composite material for the removal of DS from wastewater.
机译：环境中残留的双氯芬酸钠（DS）对人体健康有害。一种去除DS的有前途的方法是使用被氨基官能化的吸附剂，该吸附剂可以在合适的pH值下与DS的羧基形成离子键。在这项工作中，已经合成了由纤维素纳米晶体（CNC）和壳聚糖（CS）组成的新型复合吸附剂，并通过乙二胺（ED）在两层中对其进行了功能化。表征方法包括扫描电子显微镜，透射电子显微镜，能量色散X射线光谱，傅立叶变换红外光谱和X射线光电子光谱，以确认双氨基官能化吸附剂的形态和合成机理。基于优化的吸附条件和吸附机理的模型，CNS-ED @ CS-ED的DS吸附过程涉及化学吸附，从Langmuir模型获得的最大吸附容量为444.44 mg / g。 CNC-ED @ CS-ED具有良好的吸附能力和高可持续性；因此，它是从废水中去除DS的有前途的复合材料。

著录项

  • 来源
    《Journal of Hazardous Materials》 |2019年第5期|483-493|共11页
  • 作者

    Hu Dalin; Huang Haoyu; Jiang Ran; Wang Nan; Xu Hongping; Wang Yang-Guang; Ouyang Xiao-kun;

  • 作者单位

    Southern Med Univ, Sch Publ Hlth, Dept Environm Hlth, Guangdong Prov Key Lab Trop Dis Res, 1838 Guangzhou Rd North, Guangzhou 510515, Guangdong, Peoples R China;

    Southern Med Univ, Sch Publ Hlth, Dept Environm Hlth, Guangdong Prov Key Lab Trop Dis Res, 1838 Guangzhou Rd North, Guangzhou 510515, Guangdong, Peoples R China;

    Southern Med Univ, Sch Publ Hlth, Dept Environm Hlth, Guangdong Prov Key Lab Trop Dis Res, 1838 Guangzhou Rd North, Guangzhou 510515, Guangdong, Peoples R China;

    Zhejiang Ocean Univ, Sch Food & Pharm, Zhoushan 316022, Peoples R China;

    Zhejiang Ocean Univ, Sch Food & Pharm, Zhoushan 316022, Peoples R China;

    Zhejiang Ocean Univ, Sch Food & Pharm, Zhoushan 316022, Peoples R China;

    Southern Med Univ, Sch Publ Hlth, Dept Environm Hlth, Guangdong Prov Key Lab Trop Dis Res, 1838 Guangzhou Rd North, Guangzhou 510515, Guangdong, Peoples R China|Zhejiang Ocean Univ, Sch Food & Pharm, Zhoushan 316022, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Diclofenac sodium; Chitosan; Cellulose nanocrystals; Amino-Functional;

    机译：双氯芬酸钠;壳聚糖;纤维素纳米晶体;氨基功能;

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