TRANSLOCATION OF RICE CELL-BASED BIOSORBENT FOR EFFICIENT REMOVAL OF CU2+ IONS FROM WATER BODIES

Yarmanov Sh; Bobojanova G; Usmonova X

Авторы

Yarmanov Sh Department of Chemistry, Khorezm Mamun Academy, Xiva, Uzbekistan
Bobojanova G 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:

kinetics, reaction order, copper ion, sorption, pseudo-first-order kinetic model pseudo-second-order kinetic model

Аннотация

This study investigated the possibility of removing toxic Cu²⁺ ions from aqueous solutions of the biosorbent obtained by modifying rice husk biomass. Biosorbent absorbed Cu²⁺ ion at 40°C in the amount of 43.18 mg/g. The reaction order between biosorbent and metal ion, isotherm and thermodynamic analyzes are presented. Sorption between biosorbent and metal ion at different temperatures (293-313K) was found to correspond to the pseudo-second order (0.97-0.98) kinetic model. 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).

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