Cellulose-based hydrogel for adsorptive removal of cationic dyes from aqueous solution: isotherms and kinetics
Chidamparam Poornachandhra, R. M. Jayabalakrishnan, M Prasanthrajan, Govindaraj Balasubramanian, Arunachalam Lakshmanan, S. Selvakumar, Joseph Ezra John
Abstract
. The kinetics were effectively explained by a pseudo-second order model for both the dyes suggesting that chemical mechanisms influenced the adsorption of CV and MB dyes onto NCC-CH. The intraparticle diffusion model best suited the MB adsorption with three stages rather than the CV with a single step process. Also, the removal efficiency of adsorbent was retained at above 60% even after seven adsorption-desorption cycles indicating the effectiveness of the NCC-CH hydrogel beads for the removal of textile dyes.
Topics & Concepts
Cationic polymerizationKineticsAqueous solutionCelluloseChemistryChemical engineeringPolymer chemistryOrganic chemistryEngineeringPhysicsQuantum mechanicsAdsorption and biosorption for pollutant removalNanomaterials for catalytic reactionsAdvanced Cellulose Research Studies