Montmorillonite, which consists essentially of clay minerals belonging to the smectite group, has a wide range of chemical and industrial uses. The chemical structure composition, the exchangeableion type, and the small crystal size of smectite are responsible for several properties, including a large chemical active surface area, a high cation exchanged capacity and interlamellar surface having usual hydratation characteristics. The present work aimed to develop an organic-clay based on montmorillonite and natural phospholipids as a new substract for depollution. The phospholipids have been extracted from glycine max cakes using ethanol and a soxhlet system. Subsequently, the Box-Behnken experimental design was used to optimize the properties of the new adsorbent material (modified montmorillonite): montmorillonite-phospholipids. Factors constituting this design were: EtOH/H2O ratio (0.25%, 0.625%, 1.00%), phospholipid/montmorillonite ratio (0.25%, 0.75%; 1.25%), aging time of the suspension (0.5 hours; 6.25 hours; 12 hours) and the answer was adsorption capacity of the new material on methylene blue. Three factors and three level designs were used, generating 16 experiments. The modified montmorillonite has been characterized using FTIR, XRD, SEM, and TGA/TD analyses. Results demonstrate successful phospholipid intercalation, increased adsorption capacity (0.99 mg/g), and reduced hydrophobicity of the modified clay.
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