Mn²⁺ Adsorption on Nanozeolite: Determination of Thermodynamic Properties Using Isothermal Titration Calorimetry

Abstract:

This study investigates the thermodynamics of manganese ion adsorption on nanozeolite to assess the nanomaterial’s heavy metal removal efficiency from surface water, industrial water, and groundwater. Using Isothermal Titration Calorimetry (ITC), the thermodynamic profile of nanozeolite is obtained, demonstrating a low equilibrium binding affinity. The thermodynamic signature showed favorable binding mechanisms, primarily from the change of entropy, suggesting spontaneous reactions. Meanwhile, the enthalpy change of adsorption increases as temperature rises, while ∆G and T∆S decrease. Using proper thermodynamic conditions, nanozeolite may efficiently remove manganese from different water sources.

• Periodical: Materials Science Forum (Volume 1113)
• Pages: 15-20
• DOI: https://doi.org/10.4028/p-15gl2J
• Online since: February 2024
• Authors: Rochelle P. Dineros, Benjo C. Labrador, Conrado Miguel L. Ustaris IV, Paul Eric C. Maglalang, Jeremiah C. Millare*
• Keywords: Enthalpy, Entropy, Gibbs Free Energy, Isothermal Titration Calorimetry (ITC), Nanozeolite

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