Efficient removal of cationic dye from wastewater using novel low-cost adsorbent, cellulose-clay composite: Insights from isotherm, kinetic, thermodynamic, and molecular dynamics simulation studies

Controversial Issues Related to Dye Adsorption on Clay Minerals: A Critical Review

“…Another example is the complex material of bacterial cellulose and Ca 2+ -montmorillonite with a microporous structure, which was effective in the adsorption of MB and tetracycline from wastewater [177]. Similar materials were recently developed for crystal violet adsorption [178]. Clay/polymer composites have advantages over simple clay minerals in terms of the processability and separation of polymer composite particles from wastewater and dye solutions [179].…”

Molecular Dynamics Simulation of the Interaction within the Carboxymethyl Cellulose-Modified Montmorillonite Lamellae at Aggressive CuCl2 Concentrations

“…Molecular dynamics (MD) simulation has become a complementary method to experimental studies to investigate the microscopic mechanisms of clay–polymer interactions . In recent years, many MD researches of the clay–polymer composites have been conducted including the mostly used polymer types for the organo-modified engineering clay barriers, such as poly­(acrylic acid) (PAA), polyacrylamide (PAM), − poly­(ethylene oxide) (PEO), ,− polyethylene glycol (PEG), ,− poly­(vinyl alcohol) (PVA), poly­(dimethysiloxane) (PDMS), chitosan, polycarboxylate, polycaprolactone (PCL), cellulose acetate (CA), guar gum, and xanthan gum, as summarized in Table . The main adsorption mechanisms between clay and polymer were substantiated to be (1) cation bridges between the negative clay surface and oxygen containing functional groups of polymers (such as carboxyl); (2) hydrogen bond between the clay surface oxygens and hydroxyls or amidogens of polymers; and (3) electrostatic attraction between the negative clay surface and positive functional groups of polymers.…”