期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 369, 期 -, 页码 483-493出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2019.02.057
关键词
Diclofenac sodium; Chitosan; Cellulose nanocrystals; Amino-Functional
资金
- National Natural Science Foundation of China [21677066, 21476212]
- Department of Science and Technology of Guangdong Province [2014A020212206]
- Science and Technology department of Zhejiang Province [2018C02038]
- Bureau of Science and Technology of Zhoushan [2017C41005]
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.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据