Randomized trial compares methylene blue removal in water using montmorillonite and its zinc-modified variant, suggesting enhanced adsorption efficiency.
Key Points
The research aims to evaluate the effectiveness of methylene blue dye removal using pristine and ZnCl2 modified montmorillonite K10 clay.
Characterization of adsorbents through XRD, FTIR, SEM–EDS, and surface area analysis.
Adsorption kinetics follows pseudo second order and adheres to Langmuir isotherm.
Assessment of methylene blue removal under optimal conditions of 60 min contact time and pH 6.
Methylene blue removal was 74.23% for montmorillonite and 98.42% for ZnCl2 modified montmorillonite.
Langmuir adsorption capacities were 12.2 mg/g for montmorillonite and 12.66 mg/g for the modified variant.
Recycling of adsorbents for five cycles showed effectiveness with 0.1 M HCl as a desorbing agent.