Experimental analysis demonstrates effective Methylene Blue removal in water using modified bentonite, indicating potential for environmental cleanup.
Key Points
This research aims to explore the purification of montmorillonite from bentonite clay and its use in removing Methylene Blue from water.
Characterization of montmorillonite using XRD, SEM-EDX, TEM, FTIR, DRS, and UV-vis spectrophotometry.
Evaluation of adsorption and catalytic degradation of Methylene Blue through various isotherm models like Langmuir and Freundlich.
Use of kinetic studies, revealing pseudo-second-order adsorption model and thermodynamic analysis.
Application of Box-Behnken Design to assess the impact of different redox agents on catalytic degradation.
Methylene Blue was effectively removed through both adsorption and catalytic processes.
The adsorption process was determined to be exothermic with a heat of adsorption of -19.1 kJ/mol.
H2O2 concentration significantly influenced catalytic degradation with p=0.0141, and synergistic effects were noted with specific redox agent combinations.
Density Functional Theory calculations showed favorable electron-transfer properties of montmorillonite, revealing a narrow HOMO-LUMO gap of 0.05 eV.