Journal
CARBOHYDRATE POLYMERS
Volume 229, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2019.115399
Keywords
Removal; Chitosan; Layered silicate; Hydrogel; Congo red; Methylene blue
Categories
Ask authors/readers for more resources
In this paper, the composite beads were obtained by the encapsulation of a lamellar polysilicate magadiite in chitosan. The composite beads were tested as adsorbents for the removal of anionic Congo red (CR) and cationic methylene blue (MB) dyes. The obtained material was characterized by different methods such as XRD, SEM, TGA and zeta potential analysis. The adsorption mechanism of both dyes was supported by UV-vis and (FTIR) spectroscopy. The results reveal that the magadiite was immobilized in the chitosan matrix by hydrogen bond and electrostatic interactions. The influence of contact time, adsorbent dose and initial concentration of dye were investigated. The adsorption kinetics of CR onto composite beads followed the linear form of pseudo-second-order model and their equilibrium data were fitted well to the linear Langmuir model as confirmed by the calculated values of R-2, RMSE and SD. The adsorbed quantity registered for CR and MB dyes are 135.77 and 45.25 mg/g, respectively.
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