Magnetic chitosan composite for adsorption of cationic and anionic dyes in aqueous solution
By Dong-wan Cho, Byong-hun Jeon, C. Chon, F. Schwartz, Yoojin Jeong, Hocheol Song. 2015
177 citations recorded by the source corpus.
Abstract A magnetic composite material composed of nano-magnetite (NMT), heulandite (HE), and cross-linked chitosan was prepared and used as an adsorbent for methylene blue (MB) and methyl orange (MO). The composite was characterized for the morphology, magnetic and surface properties. The optimal mass ratio of chitosan:HE:NMT for the best removal of both dyes was determined to be 1:1:0.33. The adsorption of MB and MO followed the pseudo-second order kinetics, and the maximum adsorption capacities were 45.1 and 149.2 mg g −1 at pH 5.5, respectively. The adsorption of MB increased with the pH increase, while MO adsorption showed an opposite trend.
Subfields: Materials Chemistry, Organic Chemistry, Water Science and Technology
View Paper: https://www.semanticscholar.org/paper/a6141face5de922fbad3603adb1e37fc7d3620f9
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Citations in the corpus
- Adsorptive removal of multi-azo dye from aqueous phase using a semi-IPN superabsorbent chitosan-starch hydrogel (2016, background): “In addition, this model is valid for monolayer sorption onto a surface of finite number of identical sorption sites and which assumes uniform energies of sorption onto the surface with no transmigration of adsorbate in the plane of the surface (Cho et al., 2015).”