Langmuir, Год журнала: 2025, Номер unknown

Опубликована: Май 15, 2025

Effective management of uranium levels in soil and water via removal or minimization is imperative for safeguarding both environmental integrity public health. This study successfully implemented four advanced statistical physics-based adsorption models (monoenergetic monolayer, bienergetic trienergetic monolayer bilayer) to accurately describe experimental uranium(VI) uptake onto amidoxime (AO) modified multiwalled carbon nanotubes (AO-MWCNTs) at 298-318 K range. The optimal model, selected through rigorous analysis (R2, χred2, RSS HYBRID), was deployed derive essential thermodynamic parameters including entropy, Gibbs free energy internal alongside stereographic metrics. variations these relevant factors are carefully inspected relation the temperature isotherms. Our conducted error quantification procedure identified single-energy framework as most satisfactory realistic representation data. Moreover, performed numerical demonstrated that number bounded by docking cavity fluctuates range [1.22-0.76] across As system's thermal increased, accessible sites per unit mass adsorbent observed rise reached 126,788 T = 318 K. Finally, revealed retention process endothermic while negative values confirmed spontaneous nature indicating its feasibility. Entropy shows two regimes around a maximum: C < C1/2 (≈12 mg/L), disorder increases sharply; beyond peak, entropy declines, emerging configurational order. major outcomes our investigation provide crucial insights expected significantly contribute minimizing health risks associated with contamination.

Язык: Английский