Ultrasound-assisted Aliquat 336 functionalized natural resin for improved removal of Bisphenol-A and Biochanin-A from aqueous solution

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Abstract
Almond resin (a natural polymer) was incorporated with an amine solvent (Aliquat-336) by wet impregnation method in an ultrasonicator. The surface morphology, functional groups, thermal stability, and surface area were determined. The point of zero-charge on the surface was also found out. The performance of the impregnated resin was analyzed by treating Bisphenol-A (BPA) and Biochanin-A (BA) containing aqueous solutions by varying experimental parameters such as dosage amount, contact time, temperature, initial concentrations of BPA and BA, and solution pH. Pseudo-second-order kinetic model and Freundlich isotherm rendered the best fit for BPA and BA adsorption data. A double layer thermodynamic adsorption model was applied to estimate the adsorption energy and positional entropy of the process.
Funding Information
  • Anusandhan National Research Foundation

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