Journal of Thermodynamics & Catalysis
Open Access
ISSN: 2157-7544
ISSN: 2157-7544
Department of Material and Textile Engineering, Technical University of Liberec, 461 17 Liberec, Czech Republic
Research Article
'High Efficient Removal of Methylene Blue Using Microcrystalline Cellulose/Polyvinyl Alcohol/Expanded Graphite 3D Porous Foam as a ?Green? Adsorbent'
Author(s): Xiaodong Tan*, Qingyan Peng, Tereza Subrova, Jana Saskova, Jakub Wiener, Mohanapriya Venkataraman, Jiri Militky, Wei Xiong, Arunjunai Raj Mahendran and Herfried Lammer
The cellulose/Polyvinyl Alcohol (PVA)/Expanded Graphite (EG) 3D porous foam, which has wide application prospects in
cost-effective dye removal, was prepared by physical crosslinking and foaming technology. The prepared foam material has an
obvious 3D network and porous structure, exhibiting excellent removal efficiency for Methylene Blue (MB) in an aqueous
solution. The largest MB adsorption capacity of the foam is 110.81 mg/g. The adsorption process follows the pseudo-2nd order kinetics and the Freundlich isotherm model, indicating that the adsorption process is controlled by active surface sites
and the physical adsorption process. Thermodynamic studies have shown that the adsorption process is a spontaneous and
exothermic reaction. After five cycles of adsorption experiments, the composite material still exhibited a more than 70% dye
removal rate. The .. View More»
DOI:
10.37532/2157-7544.22.13.308