Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 369, Issue -, Pages 483-493Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2019.02.057
Keywords
Diclofenac sodium; Chitosan; Cellulose nanocrystals; Amino-Functional
Categories
Funding
- 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]
Ask authors/readers for more resources
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available