Removal of model cationic dye by adsorption onto poly(methacrylic acid)/zeolite hydrogel composites: Kinetics, equilibrium study and image analysis

- PMAA/zeolite hydrogel composites are synthesized and used as low-cost adsorbents.
- Adsorption kinetic is determined by the rate of movement of the boundary layer.
- Image analysis is easy and clean way to calculate the amount of adsorbed dye.
- Initial dye concentration effects uniformity of coloration along hydrogel diameter.
- Saturated adsorption amount of BY28 on PMAA/30A composite can reach up to 180 mg/g.