CU(II) ION ISOTHERMS AND THERMODYNAMIC ANALYZES OF BIOSORBENT OBTAINED ON THE BASIS OF RICE HUSK

Yarmanov Sh; G.Bobojanova; Usmonova X

Авторы

Yarmanov Sh Department of Chemistry, Khorezm Mamun Academy, Xiva, Uzbekistan
G.Bobojanova Department of Polymer chemistry, National University of Uzbekistan named after Mirzo Ulugbek, Tashkent, Uzbekistan
Usmonova X Department of Polymer chemistry, National University of Uzbekistan named after Mirzo Ulugbek, Tashkent, Uzbekistan

Ключевые слова:

isotherm, thermodynamics, free energy, enthalpy, entropy

Аннотация

In this study, absorption isotherms of toxic Cu²⁺ ions of biosorbent obtained by modification of rice husk biomass with urea were studied. Based on the analysis of the adsorption isotherm, it was concluded that the Freundlich isotherm model (0.97-0.99) is more suitable than the Langmuir isotherm model (0.95-0.98). In addition, the process isotherm was calculated from the sorption results.

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